CN112633046A - Information processing method and device, electronic equipment and storage medium - Google Patents
Information processing method and device, electronic equipment and storage mediumDownload PDFInfo
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- CN112633046A CN112633046ACN201910955919.9ACN201910955919ACN112633046ACN 112633046 ACN112633046 ACN 112633046ACN 201910955919 ACN201910955919 ACN 201910955919ACN 112633046 ACN112633046 ACN 112633046A
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- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
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- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
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- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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Abstract
Description
Technical Field
The present disclosure relates to the field of electronic device technologies, and in particular, to an information processing method and apparatus, an electronic device, and a storage medium.
Background
Fingerprint identification technology is widely applied to terminal equipment. For example, a mobile phone, a tablet computer, a notebook computer, etc. can support fingerprint identification. Fingerprint identification technology mainly comprises capacitive fingerprint identification, optical fingerprint identification, ultrasonic fingerprint identification and the like. Wherein, use optics fingerprint identification on terminal equipment, owing to can see through the screen scanning fingerprint and need not additionally trompil and set up the discernment region, greatly improved terminal electronic equipment's aesthetic property.
When controlling electronic equipment, like when unblock control, also can gather the fingerprint image based on optics fingerprint collection module to confirm whether unblock electronic equipment based on the fingerprint image of gathering.
Disclosure of Invention
The disclosure provides an information processing method and device, an electronic device and a storage medium.
According to a first aspect of the embodiments of the present disclosure, an information processing method is provided, which is applied to an electronic device including an optical fingerprint acquisition module and a display screen, and the method includes:
detecting touch operation acting on a preset area in the display screen;
when the touch operation is detected, emitting light of N colors to the preset area by using a light source under the display screen, wherein N is a positive integer greater than or equal to 2;
collecting the preset areas under the illumination of different colors by using the optical fingerprint collecting module to form a fingerprint image;
and the fingerprint images collected under the N colors of light are verified, and the fingerprints in the fingerprint images are determined to belong to preset target objects.
Optionally, when the touch operation is detected, emitting light of N colors to the preset area by using the light source under the display screen, including:
and when the touch operation is detected, emitting N kinds of light with different colors to the preset area at different moments by using the light source under the display screen, wherein one color of light corresponds to one fingerprint image.
Optionally, when the touch operation is detected, emitting N lights of different colors to the preset area at different times by using the light source under the display screen, including:
when the touch operation is detected, emitting light of an nth color to the preset area at an nth moment by using a light source under the display screen; n is less than N;
utilize the collection of optics fingerprint collection module is in the illumination of different colours preset the region, form the fingerprint image, include:
collecting the preset area under the illumination of the nth color by using the optical fingerprint collecting module to form an nth fingerprint image;
the method further comprises the following steps:
if the fingerprint in the nth fingerprint image does not belong to the preset target object, stopping emitting light of the (n + 1) th color to the preset area at the (n + 1) th moment by using the light source under the display screen, wherein the (n + 1) th moment is later than the nth moment.
Optionally, when the touch operation is detected, emitting light of N colors to the preset area by using the light source under the display screen, including:
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, wherein each color of light corresponds to one area of one fingerprint image, and the light of N colors corresponds to N different image areas in one fingerprint image.
Optionally, the method further includes:
determining a touch area of the touch operation;
determining whether the touch area is larger than a preset area threshold value;
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, including:
and when the touch operation is detected and the touch area is larger than the preset area threshold value, emitting light of N colors to different sub-areas of the preset area by using a light source under the display screen.
Optionally, the method further includes:
determining a touch duration of the touch operation;
determining whether the touch duration is greater than a preset duration threshold;
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, including:
when the touch operation is detected, the touch area is larger than the preset area threshold value, the touch duration is larger than the preset duration threshold value, and light of N colors is emitted to different sub-areas of the preset area by using the light source under the display screen.
Optionally, the fingerprint images collected under the N colors of light are all verified, and determining that a fingerprint in the fingerprint image belongs to a preset target object includes:
and when the N color lights corresponding to N different image areas in one fingerprint image pass verification, determining that the fingerprint in the fingerprint image belongs to the preset target object.
Optionally, the method further includes:
if the fingerprint in the fingerprint image belongs to the preset target object, executing a preset operation; wherein the performing the predetermined operation comprises at least one of: unlocking the electronic device; executing the network payment operation; and executing the decryption operation of the target file.
According to a second aspect of the embodiments of the present disclosure, an information processing apparatus is provided, which is applied to an electronic device including an optical fingerprint acquisition module and a display screen, the apparatus including:
the detection module is configured to detect touch operation acting on a preset area in the display screen;
the light emitting module is configured to emit light of N colors to the preset area by using a light source under the display screen when the touch operation is detected, wherein N is a positive integer greater than or equal to 2;
the acquisition module is configured to acquire the preset areas under the illumination of different colors by using the optical fingerprint acquisition module to form a fingerprint image;
the first determining module is configured to verify that the fingerprint images acquired under the N colors of light are all verified, and determine that the fingerprint in the fingerprint images belongs to a preset target object.
Optionally, the light emitting module is specifically configured to emit light of N colors to the preset area at different times by using a light source under the display screen when the touch operation is detected, where light of one color corresponds to one fingerprint image.
Optionally, the light emitting module is specifically configured to emit light of an nth color to the preset region at an nth time by using a light source under the display screen when the touch operation is detected; n is less than N;
the acquisition module is specifically configured to acquire the preset area under the illumination of the nth color by using the optical fingerprint acquisition module to form an nth fingerprint image;
the device further comprises:
and the termination module is configured to terminate the emission of the light with the n +1 th color to the preset area at the n +1 th moment by using the light source under the display screen if the fingerprint in the nth fingerprint image does not belong to the preset target object, wherein the n +1 th moment is later than the nth moment.
Optionally, the light emitting module is specifically configured to, when the touch operation is detected, emit light of N colors to different sub-areas of the preset area by using the light source under the display screen, where each light of each color corresponds to one area of one fingerprint image, and then the light of N colors corresponds to N different image areas in one fingerprint image.
Optionally, the apparatus further comprises:
a second determination module configured to determine a touch area of the touch operation;
a third determination module configured to determine whether the touch area is greater than a preset area threshold;
the light emitting module is specifically configured to emit light of N colors to different sub-areas of the preset area by using a light source under the display screen when the touch operation is detected and the touch area is larger than the preset area threshold.
Optionally, the apparatus further comprises:
a fourth determining module configured to determine a touch duration of the touch operation;
a fifth determining module configured to determine whether the touch duration is greater than a preset duration threshold;
the light emitting module is specifically configured to emit light of N colors to different sub-areas of the preset area by using the light source under the display screen when the touch operation is detected, the touch area is larger than the preset area threshold, and the touch duration is larger than the preset duration threshold.
Optionally, the first determining module is specifically configured to determine that the fingerprint in the fingerprint image belongs to the preset target object when the N color lights corresponding to N different image areas in one fingerprint image are verified.
Optionally, the apparatus further comprises:
the execution module is configured to execute a preset operation if the fingerprint in the fingerprint image belongs to the preset target object; wherein the performing the predetermined operation comprises at least one of: unlocking the electronic device; executing the network payment operation; and executing the decryption operation of the target file.
According to a third aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the information processing method as described in the first aspect above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a storage medium including:
the instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the information processing method as described in the above first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, when electronic equipment detected the touch operation in predetermineeing the region, utilize the light source under the display screen to predetermineeing the region transmission and be not less than the light of two kinds of colours to utilize the fingerprint image of optics fingerprint collection module collection under the multiple colour illumination, based on the fingerprint image of the multiple colour illumination of gathering, electronic equipment verifies the fingerprint image, when confirming the fingerprint in the fingerprint image belongs to preset target object, carries out predetermined operation. By the method, compared with a method of adopting an RGB filter in the related art, limited pixel space can be allocated to fingerprint images with different colors, so that the sampling rate (Pixels Per Inc, PPI) of the obtained fingerprint images is insufficient, and the image quality is damaged. And this is disclosed through the light of different colours of light source transmission to utilize optics fingerprint collection module to gather, can reduce the quality loss of optics fingerprint image, therefore strengthened the anti-fake effect of optics fingerprint, promoted electronic equipment's security. In addition, the optical fingerprint image is acquired by utilizing the illumination of various colors, and compared with the white light acquisition, the characteristic that the optical fingerprint image can be highlighted under the light of a specific color can be obtained, so that the anti-counterfeiting effect of the optical fingerprint can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is an exemplary diagram of a fingerprint image acquired by an optical fingerprint acquisition module based on RGB filter after filtering.
Fig. 2 is a flowchart illustrating an information processing method according to an embodiment of the disclosure.
Fig. 3 is a schematic diagram illustrating the operation of an optical fingerprint sensor according to an exemplary embodiment.
Fig. 4 is a first exemplary diagram of a fingerprint image collecting method in an embodiment of the present disclosure.
Fig. 5 is a diagram of an example of a fingerprint image collection method in an embodiment of the present disclosure.
Fig. 6 is an exemplary diagram of a fingerprint image obtained by the method of fig. 4 or 5 in the embodiment of the present disclosure.
Fig. 7 is an exemplary diagram of an information processing method in an embodiment of the disclosure.
FIG. 8 is a diagram illustrating an appliance control device according to an exemplary embodiment.
FIG. 9 is a block diagram illustrating an electronic device apparatus in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Among the correlation technique, when the fingerprint image that utilizes optics fingerprint collection module to gather controls electronic equipment, for promoting the anti-fake effect of optics fingerprint, a mode need utilize a large amount of fingerprint data to train and obtain the higher fingerprint identification model of precision, and model storage occupation space is big on the one hand, and on the other hand is high because of the algorithm complexity, and the discernment is long consuming time. For alleviating above-mentioned problem, still there is an improvement mode based on hardware, through increase the RGB filter on optics fingerprint collection module, obtains the fingerprint image of different colours through the RGB filter after-filtering to the difference that utilizes the fingerprint image under the different colours that obtains simultaneously judges the true and false. In the technique that adopts the RGB filter, the pixel space of the fingerprint image of gathering because of optics fingerprint collection module is limited for when the different fingerprint images that different colour lights that obtain through the filtering of RGB filter correspond, the pixel space of fingerprint image distributable that every kind of colour light corresponds also is limited, causes the PPI of the fingerprint image who obtains not enough easily, therefore can influence the characteristic and draw the effect, leads to optics fingerprint anti-fake effect not excellent.
For example, the optical fingerprint collection module has 90 sampling points, that is, the usable pixel space of the optical fingerprint image is 90 pixels, after being filtered by the RGB filter, when the optical fingerprint collection module collects fingerprint images corresponding to three colors of light, 90 pixels can be obtained for one fingerprint image when being collected based on mixed light before filtering, and each fingerprint image with the same size obtained after filtering can only be distributed to 30 pixels, so that the pixel density of any fingerprint image is low, and the image quality is damaged.
Fig. 1 is an exemplary diagram of a fingerprint image acquired by an optical fingerprint acquisition module based on filtering of an RGB filter, as shown in fig. 1, the fingerprint image acquired after filtering is blurred, and the image quality is poor.
In order to improve the collection quality of an optical fingerprint image and enhance the anti-counterfeiting effect of the optical fingerprint, an embodiment of the present disclosure provides an information processing method, fig. 2 is a flowchart of the information processing method shown in the embodiment of the present disclosure, and as shown in fig. 2, the information processing method applied to an electronic device includes the following steps:
and S11, detecting the touch operation acting on the preset area in the display screen.
And S12, when the touch operation is detected, emitting N colors of light to a preset area by using a light source under the display screen, wherein N is a positive integer greater than or equal to 2.
S13, collect the preset area under the illumination of different colors by utilizing the optical fingerprint collection module, and form a fingerprint image.
And S14, the fingerprint images collected under the N colors of light are verified, and the fingerprints in the fingerprint images are determined to belong to the preset target object.
In an embodiment of the present disclosure, an electronic device includes: a mobile phone, a tablet computer, or an intelligent home device, etc., which are not limited in the embodiments of the present disclosure.
The electronic equipment comprises a display screen and an optical fingerprint acquisition module. Wherein, optics fingerprint collection module can be optics fingerprint sensor for gather the fingerprint image.
Fig. 3 is a schematic diagram illustrating the operation of an optical fingerprint sensor according to an exemplary embodiment. As shown in fig. 3, an optical fingerprint sensor is disposed below a Light Emitting display device OLED (Organic Light Emitting Diode) of the screen, and the optical fingerprint sensor includes a Light sensing array, and the OLED is used as a Light Emitting source of the optical fingerprint sensor. The optical fingerprint sensor may be disposed below the entire display screen or below a designated area of the screen, which is not specifically limited in this disclosure.
In step S11 of the embodiment of the present disclosure, the electronic device detects a touch operation applied to a preset area in the display screen, where the preset area is a finger coverage area that can be collected by the optical fingerprint sensor. The optical fingerprint sensor collects the reflected light of the fingerprint through the gap of the display screen OLED display unit, so that a fingerprint image is generated.
Note that, in the embodiment of the present disclosure, the touch operation includes only a contact operation, and also includes a press operation in which a pressure is applied while being contacted. The manner in which the electronic device detects the touch operation may be detected by a touch sensor and/or a pressure sensor when the touch sensor and/or the pressure sensor are installed in the electronic device.
In step S12, when the electronic device detects a touch operation, that is, after the electronic device obtains a pressure value according to the pressure sensor, the electronic device emits light of N colors to the preset area by using the light source under the display screen. Wherein the light source under the display screen may be an OLED included in the display screen shown in fig. 2. For example, the OLEDs constituting the display screen can emit three colors of OLEDs, and different colors of light can be emitted to predetermined regions by emitting light separately from the OLEDs capable of emitting different colors. Therefore, the OLED used for displaying is also used as a light source for fingerprint collection, the multiplexing of devices is realized, and the OLED has the characteristics of exquisite and simple structure.
It should be noted that, the light source under the display screen of the electronic device emits light with two or more colors to the predetermined area, for example, in the RGB color mode, the light source emits light with at least two or more colors of red, green, and blue. While the control of the light of different colors can be done by turning on or off different OLEDs.
The different fingerprint images collected and formed in the step S12 are monochromatic fingerprint images collected based on monochromatic light; alternatively, the different image areas in one fingerprint image are monochrome fingerprint image areas based on different color light acquisitions.
In one embodiment, step S12 includes:
when touch operation is detected, a light source under the display screen is utilized to emit N kinds of light with different colors to a preset area at different moments, wherein one kind of light corresponds to one fingerprint image. Either fingerprint image is a single color fingerprint image acquired based on one color of light.
In this embodiment, the electronic device utilizes the light source under the display to emit a plurality of different colors of light at different times, one color of light corresponding to one fingerprint image, so that a plurality of fingerprint images can be obtained.
For example, the electronic device emits red light at time t1, so in step S13, based on the optical fingerprint acquisition module, a fingerprint image under red light irradiation can be acquired; subsequently, the electronic device emits green light at time t2, and the electronic device can capture an image of the fingerprint illuminated with the green light. Based on the acquisition at different moments, a fingerprint image based on red light imaging and a fingerprint image based on green light are obtained together.
Fig. 4 is a first exemplary diagram of a fingerprint image collecting method according to an embodiment of the disclosure, as shown in fig. 4, where a is a diagram of red light emitted by a light source at time t1, so that reflected light in an area S1 can be collected by an optical fingerprint collecting module to form a fingerprint image, and a diagram B is a diagram of green light emitted by a light source at time t2, so that reflected light in an area S2 can be collected by an optical fingerprint collecting module to form a fingerprint image, where S1 and S2 belong to the same preset area of an electronic device.
In this embodiment, exemplarily, the optical fingerprint collection module has 90 sampling points, and the fingerprint images corresponding to different color illumination obtained at different times can be all distributed to 90 pixel points, so that the PPI of the fingerprint images can not be lost through collection at different times, and the image quality is ensured.
In this embodiment, after a plurality of fingerprint images are acquired at different times and irradiated by different colors of light, the plurality of fingerprint images can be verified respectively, and the verification of the fingerprint images can be completed on the electronic device side or can be sent to other devices, such as a server, through the electronic device. When the fingerprint image is verified on the electronic equipment side, the acquired fingerprint image can be matched with the fingerprint image in the prerecorded first fingerprint image database; when authentication is performed on the other device side, the electronic device transmits the acquired fingerprint image to other devices such as a server and receives an authentication result returned by the other devices. In the embodiment of the present disclosure, the verification method of the fingerprint image is not limited.
In another embodiment, step S12 includes:
when touch operation is detected, light of N colors is emitted to different sub-areas of a preset area by using a light source under a display screen, wherein each color of light corresponds to one area of one fingerprint image, and the N colors of light correspond to N different image areas in one fingerprint image.
In this embodiment, electronic equipment utilizes the light source under the display screen to be in the light to predetermineeing the different subregion emission multiple colour in the region, consequently gathers the collection of the reverberation in predetermineeing the region through optics fingerprint collection module, forms a fingerprint image, and this fingerprint image is formed behind the light irradiation fingerprint of different colours.
For example, the electronic device controls the OLED to emit red light in the first sub-area of the preset area and green light in the second sub-area at the same time, so that one fingerprint image can be obtained based on the optical fingerprint acquisition module acquiring different sub-areas in the preset area at the same time. Thus, the image area corresponding to the first sub-area in one fingerprint image is the red light fingerprint image area, and the image corresponding to the second sub-area is the green light fingerprint area.
Fig. 5 is a second exemplary diagram illustrating a fingerprint image collecting method according to an embodiment of the disclosure, and as shown in fig. 5, a diagram C illustrates that an electronic device uses a light source to emit red light in an area S1a and green light in an area S1b, so that reflected light under the areas S1a and S1b can be collected together by an optical fingerprint collecting module to form a fingerprint image. The S1a and S1b areas commonly belong to a preset area of the electronic device.
In this embodiment, for example, the optical fingerprint acquisition module has 90 sampling points, and when different sub-regions emit different colors of light and acquire one fingerprint image, the fingerprint image can be allocated to 90 pixels without losing PPI of the fingerprint image, and the image quality is ensured.
Fig. 6 is an exemplary diagram of a fingerprint image obtained by the method in fig. 4 or fig. 5 in the embodiment of the present disclosure, and as shown in fig. 6, compared with fig. 1, the fingerprint image with the same size has higher definition and better image quality.
In this embodiment, based on one fingerprint image that is acquired at the same time and formed by irradiating different sub-areas with different color lights, the one fingerprint image can be matched with a fingerprint image in a second fingerprint image database that is recorded in advance, so as to complete verification. The verification mode may be completed on the electronic device side or the server side, and the embodiment of the present disclosure is not limited.
It should be noted that, in the embodiment of the present disclosure, the pre-recorded first fingerprint image database is recorded by using the acquisition method shown in fig. 4, and the pre-recorded second fingerprint image database is recorded by using the acquisition method shown in fig. 5.
In the embodiment of the disclosure, light of various colors is emitted through a light source under a display screen of the electronic equipment, and different fingerprint images are obtained by collecting preset areas under different colors of illumination at different moments through an optical fingerprint collection module; or utilize optics fingerprint collection module at the same moment, gather the light that acts on different colours on different subregion, form a fingerprint image, because the fingerprint image who obtains gathers under different colours illumination, can obtain the characteristic that can highlight under specific colour light, in the verification process, can be based on the matching of simple image level or characteristic extraction can accomplish the verification.
Compared with the situation that some features with obvious distinguishing characteristics are possibly submerged when mixed light is collected, so that more and more accurate features are extracted in a layer-by-layer complex mode such as a convolutional neural network, the mode of the embodiment of the disclosure reduces the problem that a trained model is large and occupies more storage space when verification is performed on the electronic equipment side on one hand, and completes verification due to simple image level-based matching or feature extraction on the other hand, so that algorithm complexity is low and recognition time consumption is reduced.
In addition, compared with the filtering mode through the RGB filter, as shown in fig. 6, the fingerprint image acquired by the method of the embodiment of the present disclosure can enjoy a complete pixel space, i.e., the PPI of the fingerprint image is not lost, so that the anti-counterfeiting effect of the optical fingerprint can be improved.
In one embodiment, before the light sources under the display screen are used for emitting light of multiple colors to different sub-areas of the preset area, the touch area of the touch operation can be further determined; determining whether the touch area is larger than a preset area threshold value, and therefore, when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using a light source under the display screen, wherein the method comprises the following steps:
and when the touch operation is detected and the touch area is larger than the preset area threshold value, emitting light of N colors to different sub-areas of the preset area by using a light source under the display screen.
In this embodiment, because the light of the different colours of simultaneous emission is realized through controlling different display element to give out light, consequently for guaranteeing that the fingerprint image that obtains has covered the light of different colours when the optical fingerprint collection module was gathered, need confirm the touch area of touch operation, only when touch area is greater than the area threshold value that predetermines, just think that the fingerprint image has covered the light of different colours and obtain via the collection of optical fingerprint collection module. Compared with the condition that the touch area is smaller than the preset area threshold value, the integrity of fingerprint acquisition can be ensured, the integrity is more in the contact area, and more fingerprint characteristics can be obtained; and on the other hand, the complete color light can be obtained, and more characteristics which are unique under different color lights can be obtained.
It should be noted that, the touch area of the touch operation may be obtained by the electronic device using a light source to emit light in any color in advance, acquiring a fingerprint image after collecting reflected light by using the optical fingerprint collecting module, and performing simple binarization processing on the fingerprint image to determine the touch area of the touch operation.
In another embodiment, the electronic device may further determine a touch duration of the touch operation; determining whether the touch duration is greater than a preset duration threshold, and therefore, when the touch operation is detected, emitting light of N colors to different sub-areas of a preset area by using a light source under a display screen, including:
when touch operation is detected, the touch area is larger than a preset area threshold value, the touch time is larger than a preset time threshold value, and light of N colors is emitted to different sub-areas of a preset area by using a light source under a display screen.
In this embodiment, because of the speed that the fingerprint image was gathered to optics fingerprint collection module is very fast, consequently in the long time within range big enough, can gather many fingerprint images to make things convenient for electronic equipment to determine the fingerprint image that definition and completeness are high as the fingerprint image of final collection. Therefore, the embodiment of the disclosure further sets the touch duration to be greater than the preset duration, and can obtain a fingerprint image with better quality.
It should be noted that, the obtaining of the touch duration of the touch operation may be that the electronic device starts to count time after the touch operation is detected by the touch sensor or the pressure value is detected by the pressure sensor.
In step S14 of the embodiment of the present disclosure, if the fingerprint images collected by the electronic device under the N colors of light all pass verification, it is determined that the fingerprint in the fingerprint image belongs to the preset target object, for example, different fingerprint images are formed by emitting different colors of light by using the light source at different times, and when the different fingerprint images all pass verification, it is determined that the fingerprint in the fingerprint image belongs to the preset target object; or, a fingerprint image is formed by irradiating different sub-areas with light of different colors at the same time, and if the fingerprint image passes verification, the fingerprint in the fingerprint image belongs to the preset target object. It can be understood that the fingerprint image is formed by irradiating the fingerprint with light of different colors, so that different features can be obtained in different fingerprint images, or different features can be obtained in one image, which can help to improve the accuracy of optical fingerprint anti-counterfeiting. And when the fingerprint images under different color light irradiation obtained at different moments pass verification, the fingerprint images are determined to belong to the preset target object, and the anti-counterfeiting precision can be further improved through the repeated judgment mode.
In one embodiment, when a fingerprint image is formed by illuminating different sub-areas with different colors of light at the same time, step S14 includes:
and when the N colors of light correspond to N different image areas in one fingerprint image and are verified, determining that the fingerprint in the fingerprint image belongs to a preset target object.
In this embodiment, as previously described, verification may be accomplished based on simple image-level matching. Therefore, in this embodiment, N different image areas in one fingerprint image can be matched at the image level, respectively.
For example, as shown in fig. 5, where N is 2, the S1A area sub-image and the S1B area sub-image may be respectively matched with the fingerprint image in the second fingerprint image database, that is, it is determined whether S1A can be matched with the first portion of the fingerprint image in the second fingerprint image database, and whether S1B can be matched with the second portion of the fingerprint image. If the fingerprint image in the second fingerprint image database is D, it is determined whether the similarity between S1A and the first part of D exceeds a predetermined first threshold, and whether the similarity between S1B and the second part of D exceeds a predetermined first threshold, respectively. If the fingerprint images D in the second fingerprint image database are successfully matched with the fingerprint images D in the S1A and S1B, the first threshold value is exceeded.
When both S1A and S1B match successfully, i.e., pass verification, it is determined that the fingerprint in the fingerprint image belongs to the preset target object.
When verification is completed based on a feature extraction mode, the verification that the N different image areas pass is as follows: features are extracted in N different image regions, and a feature set extracted based on the N different image regions can be matched to features extracted on fingerprint images in the second fingerprint image database.
Taking fig. 5 as an example, if the features { a1, a2} are extracted from the sub-image in the S1A region and the features { b1, b2} are extracted from the sub-image in the S1B region, the feature set extracted based on the 2 different image regions is { a1, a2, b1, b2 }. And the features extracted from the fingerprint image D in the second fingerprint image database are { D1, D2, D3, D4}, and when { a1, a2, b1, b2} and { D1, D2, D3, D4} match, for example, the similarity between the features exceeds a predetermined second threshold, it indicates that the N different image regions are verified.
When the features extracted based on S1A and S1B can both match, i.e., pass verification, it is determined that the fingerprint in the fingerprint image belongs to the preset target object.
In one embodiment, when obtaining fingerprint images under different color lights at different moments, that is, when a touch operation is detected, emitting N different colors of lights to a preset area at different moments by using a light source under a display screen, the method includes:
when touch operation is detected, emitting light of an nth color to a preset area at an nth moment by using a light source under a display screen; n is less than N;
step S13, including:
collecting a preset area under the illumination of the nth color by using an optical fingerprint collecting module to form an nth fingerprint image;
the method further comprises the following steps:
and if the fingerprint in the nth fingerprint image does not belong to the preset target object, stopping emitting light of the (N + 1) th color to the preset area at the (N + 1) th moment by using the light source under the display screen, wherein the (N + 1) th moment is later than the (N) th moment, and the (N + 1) th moment is less than or equal to N.
In this embodiment, when the fingerprint in the fingerprint image formed by using the light of the nth color at the nth time does not belong to the preset target object, the emission of the light of the (n + 1) th color at the nth +1 th time is terminated, so that the ineffective light emission of the light source can be avoided, and the power consumption of the electronic device can be saved.
In this embodiment, when different color lights are emitted at different times to obtain fingerprint images, the capturing at the n +1 th time is ended when the fingerprint image captured at the n th time does not belong to the preset target object. In another embodiment, because the time consumption for acquiring is short, different fingerprint images at different times may be acquired first, and then a process of determining whether any fingerprint image belongs to a preset target object may be performed. The embodiment of the present disclosure does not specifically limit the execution manner of the optical fingerprint module for collecting fingerprint images with different colors at different times.
In addition, in the embodiment of the disclosure, the light emitting sequence of different color lights can be set according to the characteristics of the optical fingerprint acquisition module, for example, if the optical fingerprint acquisition module is more sensitive to green light, the fingerprint image acquired based on green light can be preferentially set, and the matching identification is performed, so as to reduce the time-consuming duration for determining whether the next acquisition is needed.
In an embodiment of the present disclosure, the information processing method further includes:
if the fingerprint in the fingerprint image belongs to a preset target object, executing a preset operation; wherein the performing the predetermined operation comprises at least one of:
unlocking the electronic equipment;
executing the network payment operation;
and executing the decryption operation of the target file.
In this embodiment, the electronic device is controlled based on the anti-counterfeit application of the optical fingerprint, for example, when the screen of the electronic device is locked, the electronic device can be unlocked after the fingerprint in the fingerprint image is determined to belong to the preset target object; or, in some applications with payment function, after determining that the fingerprint in the fingerprint image belongs to a preset target object, executing network payment operation; alternatively, in some applications that utilize a fingerprint to encrypt a file, after determining that a fingerprint in the fingerprint image belongs to a preset target object, a decryption operation of the target file is performed.
It should be noted that, in the embodiment of the present disclosure, the electronic device utilizes the light source of the present disclosure to emit light of N colors to the preset area, and utilizes the optical fingerprint acquisition module to acquire a fingerprint image, and the application based on the fingerprint image is not limited to the above listed applications.
It can be understood that, in the embodiment of the disclosure, the optical fingerprint image is collected by utilizing the illumination of multiple colors, so that the quality loss of the optical fingerprint image is reduced, the anti-counterfeiting effect of the optical fingerprint is enhanced, and the safety of the electronic equipment is improved.
An application example of using an electronic device as a mobile phone and using an optical fingerprint to unlock the mobile phone is shown in fig. 7, which is an exemplary diagram of an information processing method in an embodiment of the present disclosure, and as shown in fig. 7, the information processing method applied to the mobile phone includes the following steps:
s21, the mobile phone respectively emits red light and green light by using the light source, and respectively collects fingerprint images corresponding to the red light and the green light by the optical fingerprint collection module to form a fingerprint library.
It should be noted that in the embodiment of the present disclosure, the fingerprint library only needs to be recorded once without changing the requirement. Namely, when the subsequent steps are executed, the method can be directly applied under the condition that the fingerprint database is recorded.
S22, the optical fingerprint collection module in the mobile phone collects a first fingerprint image when the light source emits green light.
S23, the mobile phone judges whether the first fingerprint image is matched with the fingerprint image in the fingerprint database, if the matching is correct, the step S24 is executed; if the matching is not correct, step S27 is executed to terminate the light source to continue emitting light of different colors.
In this embodiment, when the first fingerprint image and the fingerprint images in the fingerprint library are matched to be successful, the first fingerprint image is verified to be passed.
S24, collecting the second fingerprint image when the light source emits red light by the optical fingerprint collecting module in the mobile phone.
S25, the mobile phone judges whether the second fingerprint image is matched with the fingerprint image in the fingerprint database, if the matching is correct, the step S26 is executed; if the matching is false, the electronic device is not unlocked, and step S27 is executed.
In this embodiment, when the second fingerprint image matches the fingerprint images in the fingerprint library successfully, the second fingerprint image is verified.
And S26, the mobile phone executes unlocking operation.
And S27, ending.
In this embodiment, when both the first fingerprint image and the second fingerprint image are verified, it is determined that both the fingerprint in the first fingerprint image and the fingerprint in the second fingerprint image belong to the preset target object, and thus, the mobile phone performs the unlocking operation.
It can be understood that, in the embodiment of the present disclosure, the mobile phone irradiates and collects different optical fingerprint images at different times by using red light and green light, and determines whether to execute an unlocking operation based on the first fingerprint image and the second fingerprint image, thereby improving the security of the mobile phone.
FIG. 8 is a diagram illustrating an appliance control device according to an exemplary embodiment. Referring to fig. 8, the device control apparatus is applied to an electronic device including an optical fingerprint acquisition module and a display screen, and includes:
the detection module 101 is configured to detect a touch operation acting on a preset area in the display screen;
the light emitting module 102 is configured to emit light of N colors to the preset area by using a light source under the display screen when the touch operation is detected, wherein N is a positive integer greater than or equal to 2;
the acquisition module 103 is configured to acquire the preset areas under the illumination of different colors by using the optical fingerprint acquisition module to form a fingerprint image;
the first determining module 104 is configured to verify that the fingerprint images acquired under the N colors of light all pass, and determine that a fingerprint in the fingerprint images belongs to a preset target object.
Optionally, the light emitting module 102 is specifically configured to emit light of N colors to the preset area at different times by using a light source under the display screen when the touch operation is detected, where light of one color corresponds to one fingerprint image.
Optionally, the light emitting module 102 is specifically configured to, when the touch operation is detected, emit light of an nth color to the preset area at an nth time by using a light source under the display screen; n is less than N;
the acquisition module 103 is specifically configured to acquire the preset area under the illumination of the nth color by using the optical fingerprint acquisition module to form an nth fingerprint image;
the device further comprises:
a termination module 105 configured to terminate, if the fingerprint in the nth fingerprint image does not belong to the preset target object, the emission of light of an n +1 th color to the preset area at an n +1 th time by using the light source under the display screen, where the n +1 th time is later than the nth time.
Optionally, the light emitting module 102 is specifically configured to, when the touch operation is detected, utilize the light source under the display screen to emit light of N colors to different sub-areas of the preset area, where each color of light corresponds to one area of one fingerprint image, and then the light of N colors corresponds to N different image areas in one fingerprint image.
Optionally, the apparatus further comprises:
a second determining module 106 configured to determine a touch area of the touch operation;
a third determining module 107 configured to determine whether the touch area is greater than a preset area threshold;
the light emitting module 102 is specifically configured to emit light of N colors to different sub-areas of the preset area by using a light source under the display screen when the touch operation is detected and the touch area is larger than the preset area threshold.
Optionally, the apparatus further comprises:
a fourth determining module 108 configured to determine a touch duration of the touch operation;
a fifth determining module 109 configured to determine whether the touch duration is greater than a preset duration threshold;
the light emitting module 102 is specifically configured to, when the touch operation is detected, the touch area is greater than the preset area threshold, the touch duration is greater than the preset duration threshold, and the light source under the display screen is used to emit light of N colors to different sub-areas of the preset area.
Optionally, the first determining module 104 is specifically configured to determine that the fingerprint in the fingerprint image belongs to the preset target object when the N color lights corresponding to N different image areas in one fingerprint image are verified.
Optionally, the apparatus further comprises:
an executing module 110 configured to execute a predetermined operation if the fingerprint in the fingerprint image belongs to the preset target object; wherein the performing the predetermined operation comprises at least one of: unlocking the electronic device; executing the network payment operation; and executing the decryption operation of the target file.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
FIG. 9 is a block diagram illustrating an electronic device apparatus in accordance with an example embodiment. For example, thedevice 800 may be a mobile phone, a mobile computer, etc.
Referring to fig. 9, theapparatus 800 may include one or more of the following components: processingcomponent 802,memory 804,power component 806,multimedia component 808,audio component 810, input/output (I/O)interface 812,sensor component 814, andcommunication component 816.
Theprocessing component 802 generally controls overall operation of thedevice 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Theprocessing components 802 may include one ormore processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, theprocessing component 802 can include one or more modules that facilitate interaction between theprocessing component 802 and other components. For example, theprocessing component 802 can include a multimedia module to facilitate interaction between themultimedia component 808 and theprocessing component 802.
Thememory 804 is configured to store various types of data to support operations at theapparatus 800. Examples of such data include instructions for any application or method operating ondevice 800, contact data, phonebook data, messages, pictures, videos, and so forth. Thememory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
Themultimedia component 808 includes a screen that provides an output interface between thedevice 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, themultimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when thedevice 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
Theaudio component 810 is configured to output and/or input audio signals. For example, theaudio component 810 includes a Microphone (MIC) configured to receive external audio signals when theapparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in thememory 804 or transmitted via thecommunication component 816. In some embodiments,audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between theprocessing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
Thesensor assembly 814 includes one or more sensors for providing various aspects of state assessment for thedevice 800. For example, thesensor assembly 814 may detect the open/closed status of thedevice 800, the relative positioning of components, such as a display and keypad of thedevice 800, thesensor assembly 814 may also detect a change in the position of thedevice 800 or a component of thedevice 800, the presence or absence of user contact with thedevice 800, the orientation or acceleration/deceleration of thedevice 800, and a change in the temperature of thedevice 800.Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. Thesensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, thesensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
Thecommunication component 816 is configured to facilitate communications between theapparatus 800 and other devices in a wired or wireless manner. Thedevice 800 may access a wireless network based on a communication standard, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, thecommunication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, thecommunication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, theapparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as thememory 804 comprising instructions, executable by theprocessor 820 of thedevice 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium having instructions that, when executed by a processor of an electronic device, enable the electronic device including an optical fingerprinting module and a display screen to perform an information processing method, the method comprising:
detecting touch operation acting on a preset area in the display screen;
when the touch operation is detected, emitting light of N colors to the preset area by using a light source under the display screen, wherein N is a positive integer greater than or equal to 2;
collecting the preset areas under the illumination of different colors by using the optical fingerprint collecting module to form a fingerprint image;
and the fingerprint images collected under the N colors of light are verified, and the fingerprints in the fingerprint images are determined to belong to preset target objects.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (18)
1. An information processing method is applied to electronic equipment comprising an optical fingerprint acquisition module and a display screen, and the method comprises the following steps:
detecting touch operation acting on a preset area in the display screen;
when the touch operation is detected, emitting light of N colors to the preset area by using a light source under the display screen, wherein N is a positive integer greater than or equal to 2;
collecting the preset areas under the illumination of different colors by using the optical fingerprint collecting module to form a fingerprint image;
and the fingerprint images collected under the N colors of light are verified, and the fingerprints in the fingerprint images are determined to belong to preset target objects.
2. The method according to claim 1, wherein when the touch operation is detected, emitting light of N colors to the preset area by using a light source under the display screen comprises:
and when the touch operation is detected, emitting N kinds of light with different colors to the preset area at different moments by using the light source under the display screen, wherein one color of light corresponds to one fingerprint image.
3. The method according to claim 2, wherein when the touch operation is detected, emitting light of N different colors to the preset area at different times by using a light source under the display screen, comprises:
when the touch operation is detected, emitting light of an nth color to the preset area at an nth moment by using a light source under the display screen; n is less than N;
utilize the collection of optics fingerprint collection module is in the illumination of different colours preset the region, form the fingerprint image, include: collecting the preset area under the illumination of the nth color by using the optical fingerprint collecting module to form an nth fingerprint image;
the method further comprises the following steps:
if the fingerprint in the nth fingerprint image does not belong to the preset target object, stopping emitting light of the (n + 1) th color to the preset area at the (n + 1) th moment by using the light source under the display screen, wherein the (n + 1) th moment is later than the nth moment.
4. The method according to claim 1, wherein when the touch operation is detected, emitting light of N colors to the preset area by using a light source under the display screen comprises:
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, wherein each color of light corresponds to one area of one fingerprint image, and the light of N colors corresponds to N different image areas in one fingerprint image.
5. The method of claim 4, further comprising:
determining a touch area of the touch operation;
determining whether the touch area is larger than a preset area threshold value;
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, including:
and when the touch operation is detected and the touch area is larger than the preset area threshold value, emitting light of N colors to different sub-areas of the preset area by using a light source under the display screen.
6. The method of claim 5, further comprising:
determining a touch duration of the touch operation;
determining whether the touch duration is greater than a preset duration threshold;
when the touch operation is detected, emitting light of N colors to different sub-areas of the preset area by using the light source under the display screen, including:
when the touch operation is detected, the touch area is larger than the preset area threshold value, the touch duration is larger than the preset duration threshold value, and light of N colors is emitted to different sub-areas of the preset area by using the light source under the display screen.
7. The method according to claim 4, wherein the fingerprint images acquired under the N colors of light are all verified, and determining that the fingerprint in the fingerprint images belongs to a preset target object comprises:
and when the N color lights corresponding to N different image areas in one fingerprint image pass verification, determining that the fingerprint in the fingerprint image belongs to the preset target object.
8. The method of claim 1, further comprising:
if the fingerprint in the fingerprint image belongs to the preset target object, executing a preset operation; wherein the performing the predetermined operation comprises at least one of:
unlocking the electronic device;
executing the network payment operation;
and executing the decryption operation of the target file.
9. The utility model provides an information processing apparatus which characterized in that, is applied to in the electronic equipment who contains optics fingerprint collection module and display screen, the device includes:
the detection module is configured to detect touch operation acting on a preset area in the display screen;
the light emitting module is configured to emit light of N colors to the preset area by using a light source under the display screen when the touch operation is detected, wherein N is a positive integer greater than or equal to 2;
the acquisition module is configured to acquire the preset areas under the illumination of different colors by using the optical fingerprint acquisition module to form a fingerprint image;
the first determining module is configured to verify that the fingerprint images acquired under the N colors of light are all verified, and determine that the fingerprint in the fingerprint images belongs to a preset target object.
10. The apparatus of claim 9,
the light emitting module is specifically configured to emit light of N colors to the preset area at different times by using a light source under the display screen when the touch operation is detected, wherein one color of light corresponds to one fingerprint image.
11. The apparatus of claim 10,
the light emitting module is specifically configured to emit light of an nth color to the preset area at an nth time by using a light source under the display screen when the touch operation is detected; n is less than N;
the acquisition module is specifically configured to acquire the preset area under the illumination of the nth color by using the optical fingerprint acquisition module to form an nth fingerprint image;
the device further comprises:
and the termination module is configured to terminate the emission of the light with the n +1 th color to the preset area at the n +1 th moment by using the light source under the display screen if the fingerprint in the nth fingerprint image does not belong to the preset target object, wherein the n +1 th moment is later than the nth moment.
12. The apparatus of claim 9,
the light emitting module is specifically configured to, when the touch operation is detected, emit light of N colors to different sub-areas of the preset area by using the light source under the display screen, where each light of each color corresponds to one area of one fingerprint image, and then the light of N colors corresponds to N different image areas in one fingerprint image.
13. The apparatus of claim 12, further comprising:
a second determination module configured to determine a touch area of the touch operation;
a third determination module configured to determine whether the touch area is greater than a preset area threshold;
the light emitting module is specifically configured to emit light of N colors to different sub-areas of the preset area by using a light source under the display screen when the touch operation is detected and the touch area is larger than the preset area threshold.
14. The apparatus of claim 13, further comprising:
a fourth determining module configured to determine a touch duration of the touch operation;
a fifth determining module configured to determine whether the touch duration is greater than a preset duration threshold;
the light emitting module is specifically configured to emit light of N colors to different sub-areas of the preset area by using the light source under the display screen when the touch operation is detected, the touch area is larger than the preset area threshold, and the touch duration is larger than the preset duration threshold.
15. The apparatus of claim 12,
the first determining module is specifically configured to determine that a fingerprint in the fingerprint image belongs to the preset target object when the N color lights corresponding to N different image areas in the fingerprint image are all verified.
16. The apparatus of claim 9, further comprising:
the execution module is configured to execute a preset operation if the fingerprint in the fingerprint image belongs to the preset target object; wherein the performing the predetermined operation comprises at least one of: unlocking the electronic device; executing the network payment operation; and executing the decryption operation of the target file.
17. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the information processing method of any one of claims 1 to 8.
18. A non-transitory computer-readable storage medium in which instructions, when executed by a processor in an electronic device, enable the electronic device to perform the information processing method of any one of claims 1 to 8.
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| CN115494980A (en)* | 2022-09-23 | 2022-12-20 | 青岛海信医疗设备股份有限公司 | Touch screen control method, device, equipment and storage medium |
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