


技术领域technical field
本发明涉及一种三位重现视觉机器,具体说是一种智能视力检测装置。The invention relates to a three-digit reproduction vision machine, in particular to an intelligent vision detection device.
背景技术Background technique
人类视力检测是身体健康检查的常规内容,现有的检查方法可分为采用传统印刷视力表的检查方法和利用计算机多媒体技术的自动检测方法。这两种方法都是要求被检测者在视力表或者视力表显示器前特定距离位置处进行视力检测,视力表或显示器中的检测字符尺寸恒定不变,这样当被检测者由于主观或客观原因未能在上述特定位置参加视力检测时,就会对视力检测的准确性造成影响。针对这个问题,近年出现了利用红外测距技术测量被检测者与视力表或视力表显示器之间距离的视力检测装置,但是这类装置不能区分检测环境中的其他人或物,实用性不强。Human visual acuity testing is a routine content of health checkups. Existing checking methods can be divided into checking methods using traditional printed eye charts and automatic testing methods using computer multimedia technology. Both of these methods require the subject to be tested at a specific distance in front of the eye chart or the eye chart display, and the size of the detected characters in the eye chart or display is constant, so that when the subject does not see the test due to subjective or objective reasons When being able to participate in the vision test at the above-mentioned specific positions, it will affect the accuracy of the vision test. In response to this problem, in recent years, a vision detection device that uses infrared ranging technology to measure the distance between the subject and the eye chart or the eye chart display has appeared, but this type of device cannot distinguish other people or objects in the detection environment, and is not very practical. .
发明内容Contents of the invention
本发明针对现有技术中存在的没有一种简单方便同时精度高的根据被检测者与视力表距离进行自适应调节检测字符大小的对人类视力进行检测的问题,而提供一种带有双目摄像机的智能视力检测装置,该装置能够方便地对被检测者进行定位,计算上述距离,调节检测字符大小,最大精度的对视力进行检测。同时,通过无线设备实现人机交互。The present invention aims at the problem in the prior art that there is no simple, convenient and high-precision detection of human vision that can adaptively adjust the detection character size according to the distance between the subject and the eye chart, and provides a binocular The intelligent vision detection device of the camera can conveniently locate the detected person, calculate the above-mentioned distance, adjust the size of the detection characters, and detect the vision with the greatest accuracy. At the same time, human-computer interaction is realized through wireless devices.
为达到上述目的,本发明采用如下的技术方案:To achieve the above object, the present invention adopts the following technical solutions:
一种带有双目摄像机的智能视力检测装置,包括双目摄像机、视力表显示装置、计算机、图像采集卡、计算机端无线收发设备、被检测视力者端的无线人机交互装置、读卡器以及被检测者ID卡,其特点是:两个摄像机放置在成像图像平面,两个摄像机焦距相同,并通过图像采集卡与计算机连接,计算机与视力表显示装置连接,用于双目摄像机对被检测视力者拍照,通过图像采集卡采集图像、检测图像中的人脸区域以及人脸区域内的双眼位置,通过计算机计算出被检测者双眼中心到视力表显示装置的检测字符显示屏幕的距离;计算机与计算机端无线收发设备连接,计算机端无线收发设备与被检测视力者端的无线人机交互装置无线通讯连接。An intelligent vision detection device with a binocular camera, including a binocular camera, an eye chart display device, a computer, an image acquisition card, a wireless transceiver device at the computer end, a wireless human-computer interaction device at the end of the sighted person, a card reader and The ID card of the detected person is characterized in that: two cameras are placed on the imaging image plane, the focal lengths of the two cameras are the same, and they are connected to the computer through the image acquisition card, and the computer is connected to the eye chart display device, which is used for binocular cameras to be detected. The sight person takes pictures, collects images through the image acquisition card, detects the face area in the image and the position of the eyes in the face area, and calculates the distance from the center of the eyes of the tested person to the detection character display screen of the eye chart display device through the computer; It is connected with the computer-side wireless transceiver device, and the computer-side wireless transceiver device is wirelessly connected with the wireless human-computer interaction device at the sighted person's side.
计算机还与读卡器连接。读卡器内插有被检测者ID卡。The computer is also connected to the card reader. The ID card of the detected person is inserted in the card reader.
计算机为PC机或笔记本式便携机或安装处理软件的嵌入式计算处理设备。The computer is a PC or a notebook portable computer or an embedded computing processing device installed with processing software.
图像采集卡是由DSP数字信号处理器构成的硬件板卡;其输入端通过1394线或AV线与双目摄像机相连接,用于双目摄像机采集的图像信号译码处理,并通过总线传给计算机。The image acquisition card is a hardware board composed of a DSP digital signal processor; its input terminal is connected to the binocular camera through the 1394 line or the AV line, and is used for decoding and processing the image signal collected by the binocular camera, and is transmitted to the binocular camera through the bus. computer.
计算机端无线收发设备通过红外无线通讯或蓝牙无线通讯接收来自被检测者发出的指令信号和通过蓝牙无线通讯发送/接收被检测者语音信号,与被检测者进行声音交互。The computer-side wireless transceiver device receives command signals from the subject through infrared wireless communication or Bluetooth wireless communication and sends/receives voice signals from the subject through Bluetooth wireless communication, and performs sound interaction with the subject.
被检测视力者端的无线人机交互装置为具有红外无线通讯能力和蓝牙无线通讯能力的无线鼠标或具有蓝牙通讯能力的无线耳麦。The wireless human-computer interaction device at the end of the detected sight person is a wireless mouse with infrared wireless communication capability and Bluetooth wireless communication capability or a wireless headset with Bluetooth communication capability.
本发明的有益效果是:本发明利用双目摄像机测量被检测者与视力表显示装置之间的距离,根据这个距离调节显示装置视力检测字符的尺寸大小并在显示装置上进行显示。显示后计算机通过蓝牙无线设备发射语音信号给被检测者戴的耳麦提示被检测者准备接收检测。被检测者接受检测后用无线鼠标进行检测答案的选择,循环进行,直至完成检测。The beneficial effects of the present invention are: the present invention uses a binocular camera to measure the distance between the subject and the eye chart display device, adjusts the size of the eyesight detection characters of the display device according to the distance, and displays them on the display device. After the display, the computer transmits a voice signal to the headset worn by the tested person through the Bluetooth wireless device to prompt the tested person to prepare for the test. After being tested, the person to be tested uses the wireless mouse to choose the answer to the test, which is repeated until the test is completed.
由此可见,本发明的检测装置能够方便地对视力进行精确检测。It can be seen that the detection device of the present invention can conveniently and accurately detect vision.
附图说明Description of drawings
图1是本发明的结构示意图;Fig. 1 is a structural representation of the present invention;
图2是检测开始时人机交互阶段显示装置显示示意图;Fig. 2 is a schematic diagram showing the display device in the human-computer interaction stage when the detection starts;
图3是检测过程中人机交互阶段显示装置显示示意图。Fig. 3 is a schematic diagram of the display device in the human-computer interaction stage during the detection process.
具体实施方式Detailed ways
下面结合附图与实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
如图1所示,本发明的带有双目摄像机的智能视力检测装置由双目摄像机1、视力表显示装置2、计算机3、图像采集卡4、计算机端无线收发设备6、被检测视力者端的无线人机交互装置7、读卡器8以及被检测者ID卡9组成。As shown in Figure 1, the intelligent eyesight detection device that has binocular camera of the present invention is made of binocular camera 1, eye chart display device 2, computer 3, image acquisition card 4, computer end wireless transceiver equipment 6, the person with detected eyesight It consists of a wireless human-
双目摄像机1采用两个工业模拟或数字摄像机,这两个摄像机要求在位置上进行特殊放置,即成像的图像平面(又称投影平面)在惯性空间中位于同一平面且只有一个维度的平移,另外要求两个摄像机焦距相同。双目摄像机1通过图像采集卡与计算机3连接,计算机3与视力表显示装置2连接。计算机3与计算机端无线收发设备6连接,计算机端无线收发设备6与被检测视力者端的无线人机交互装置7无线通讯连接。The binocular camera 1 uses two industrial analog or digital cameras, which require special placement in position, that is, the imaging image plane (also known as the projection plane) is located on the same plane in the inertial space and has only one-dimensional translation, In addition, it is required that the focal lengths of the two cameras are the same. The binocular camera 1 is connected to a computer 3 through an image acquisition card, and the computer 3 is connected to an eye chart display device 2 . The computer 3 is connected with the wireless transceiver device 6 at the computer side, and the wireless transceiver device 6 at the computer side is connected with the wireless human-
双目摄像机1对被检测视力者进行拍照,采集图像后自动检测图像中的人脸区域,进而在人脸区域内检测双眼位置,进行双眼几何中心的计算,最后根据双目视觉三维重现技术在计算机3中计算出被检测者双眼中心到检测字符显示屏幕的距离。The binocular camera 1 takes pictures of the detected sighted person, automatically detects the face area in the image after collecting the image, and then detects the position of the eyes in the face area, calculates the geometric center of the binocular, and finally uses the binocular vision three-dimensional reproduction technology Calculate the distance from the center of the eyes of the detected person to the display screen of the detected characters in the computer 3 .
计算机3计算出检测者双眼中心与检测字符显示屏幕的距离后,根据内置保存好的《视力表国家标准——标准对数视力表【GB 11533—1989】》确定检测字符的尺寸大小及对应视力记录值,确定好尺寸的检测字符通过总线传输到视力表显示装置2进行显示。After the computer 3 calculates the distance between the center of the tester's eyes and the display screen of the detected character, the size of the detected character and the corresponding visual acuity are determined according to the built-in saved "National Standard for Eye Chart--Standard Logarithmic Vision Chart [GB 11533-1989]" Record the value, and the detected character with a determined size is transmitted to the eye chart display device 2 for display through the bus.
视力表显示装置2可以是独立于计算机的显示器,也可以是与计算机配套的显示器,但要保证其分辨率、照度、亮度等对检测字符显示有影响的要素要符合《视力表国家标准——标准对数视力表【GB 11533—1989】》的要求。The eye chart display device 2 can be a monitor independent of the computer, or a monitor that is matched with the computer, but it must be ensured that its resolution, illuminance, brightness and other elements that have an impact on the display of the detected characters must comply with the "National Standard for Eye Charts—— Standard logarithmic vision chart [GB 11533-1989] "requirements.
图像采集卡4是指辅助计算机采集双目摄像机图像信号的DSP数字信号处理器为主的硬件板卡。图像采集卡4输入端通过1394线或AV线与双目摄像机1相连接,将双目摄像机1采集的图像信号译码处理,然后通过总线传给计算机3。(数字信号处理(Digital Signal Processing,简称DSP),1394线用来连接数码摄像机和电脑的线,由1995年电机电子工程师协会(IEEE)把它作为正式新标准,编号1394)。The image acquisition card 4 refers to a hardware board based on a DSP digital signal processor that assists the computer in acquiring binocular camera image signals. The input end of the image acquisition card 4 is connected to the binocular camera 1 through the 1394 line or the AV line, and the image signal collected by the binocular camera 1 is decoded and processed, and then transmitted to the computer 3 through the bus. (Digital Signal Processing (DSP for short), 1394 lines are used to connect digital cameras and computers, and it was officially adopted by the Institute of Electrical and Electronics Engineers (IEEE) in 1995 as a new standard, number 1394).
计算机端无线收发设备6具有红外无线通讯能力和蓝牙无线通讯能力。其中红外无线收发设备接收来自被检测者发出的指令,蓝牙无线通讯设备发送/接收语音信号,与被检测者进行声音交互。The computer-side wireless transceiver device 6 has infrared wireless communication capability and bluetooth wireless communication capability. Among them, the infrared wireless transceiver device receives instructions from the detected person, and the Bluetooth wireless communication device sends/receives voice signals to perform sound interaction with the detected person.
被检测视力者端的无线人机交互装置7具有红外无线通讯能力和蓝牙无线通讯能力,具体指具有红外通讯能力的无线鼠标和蓝牙通讯能力的无线耳麦。The wireless human-
读卡器8可以在视力检测完成后将检测结果通过读写磁卡的形式保存到被检测者的ID卡9中。The
计算机3可以是传统意义的PC机、笔记本式便携机以及其他具有类似计算能力、安装处理软件的嵌入式处理设备。The computer 3 may be a conventional PC, a notebook portable computer, or other embedded processing devices with similar computing capabilities and installed processing software.
本发明使用过程:The present invention uses process:
(1) 检测装置开机并完成预备工作(1) Start up the detection device and complete the preparatory work
将检测装置开机上电,读卡器8阅读被检测者ID卡9信息,检测装置通过蓝牙无线通讯设备向被检测视力者头戴的无线耳机发送语音信号提示被检测视力者准备接受左眼视力检测;Turn on the detection device and power on, the
(2) 被检测视力者通过具有红外通讯能力的无线鼠标与检测装置进行人机交互,告知检测装置已经准备好接受检查,该过程显示装置2显示如附图2所示;(2) The sighted person conducts human-computer interaction with the detection device through a wireless mouse with infrared communication capabilities, and informs the detection device that it is ready for inspection. The display device 2 during this process is shown in Figure 2;
(3) 计算机3控制双目摄像机1对被检测者进行拍照,并在采集的图像中自动确定人脸区域,进而检测出人眼部位并计算几何中心,利用机器视觉中双目立体视觉三维重现技术计算出人眼距离视力表显示装置的距离;然后根据计算出的这个距离,参照国家标准《视力表国家标准——标准对数视力表【GB 11533—1989】》确定视力表中每一级视力对应的检测字符的尺寸大小;最后按照传统视力检测中视力表检测字符使用规则发送到视力表显示装置2上进行视力显示。该过程显示装置显示如附图3中的上部所示,其中字符的尺寸不是恒定不变的,而是根据前述过程所测距离进行实时调整的。(3) The computer 3 controls the binocular camera 1 to take pictures of the detected person, and automatically determines the face area in the collected image, and then detects the human eye part and calculates the geometric center, using binocular stereo vision in machine vision for three-dimensional The reproduction technology calculates the distance between the human eye and the display device of the eye chart; then according to the calculated distance, refer to the national standard "National Standard for Eye Chart - Standard Logarithmic Eye Chart [GB 11533-1989]" to determine each The size of the detection characters corresponding to the first-level vision; finally, according to the rules of using the eyesight chart detection characters in the traditional vision test, it is sent to the vision chart display device 2 for vision display. The process display device is shown in the upper part of the accompanying drawing 3, wherein the size of the characters is not constant, but is adjusted in real time according to the distance measured in the aforementioned process.
(4) 被检测视力者根据观察到的检测字符做出方向选择“上”、“下”、“左”、“右”,如果看不清楚则做出选择“模糊不清”。选择是通过使用具有红外通讯能力的无线鼠标与检测装置进行人机交互完成的,该过程显示装置显示如附图3中下部分所示。(4) The sighted person makes a direction selection of "Up", "Down", "Left", and "Right" according to the observed detection characters, and chooses "Fuzzy" if they can't see clearly. The selection is accomplished through human-computer interaction with the detection device using a wireless mouse with infrared communication capability, and the process display device is shown in the lower part of the accompanying drawing 3 .
(5) 计算机3根据被检测者做出的选择决定下一步视力等级的检测及相应字符的显示,循环进行直至完成左眼检测;(5) The computer 3 determines the next step of visual acuity level detection and the display of corresponding characters according to the choice made by the person being tested, and continues until the left eye detection is completed;
(6) 检测装置通过蓝牙无线通讯设备向被检测视力者头戴的无线耳机发送语音信号提示被检测视力者准备接受视力检测,按照步骤完成右眼视力检测。(6) The detection device sends a voice signal to the wireless headset worn by the sighted person through the Bluetooth wireless communication device to remind the sighted person to prepare for the vision test, and complete the right eye vision test according to the steps.
(7) 结束后,检测装置通过蓝牙无线通讯设备向被检测视力者头戴的无线耳机发送语音信号提示被检测视力者已经完成视力检测。同时,将检测结果通过串口读卡器8保存至被检测者的ID卡9中。(7) After the end, the detection device sends a voice signal to the wireless headset worn by the sighted person through the Bluetooth wireless communication device to remind the sighted person that the vision test has been completed. Simultaneously, the detection result is saved in the ID card 9 of the detected person through the serial
本发明通过双目摄像机对被检测者进行拍照获取图像信息,然后确定图像中面部区域,最后在面部区域中识别出人眼部位,利用双目摄像机三维重现技术计算出眼部中心与视力表(或视力表显示装置)之间的距离,确定视力表中检测字符的尺寸,解决了现有技术存在的问题。The invention uses a binocular camera to take pictures of the subject to obtain image information, then determines the face area in the image, and finally identifies the human eye parts in the face area, and uses the binocular camera three-dimensional reproduction technology to calculate the eye center and visual acuity The distance between the eye charts (or eye chart display devices) determines the size of the detected characters in the eye chart, and solves the problems in the prior art.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210008476CN102525400B (en) | 2012-01-12 | 2012-01-12 | Intelligent eyesight detecting device with binocular cameras |
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210008476CN102525400B (en) | 2012-01-12 | 2012-01-12 | Intelligent eyesight detecting device with binocular cameras |
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| CN102525400Atrue CN102525400A (en) | 2012-07-04 |
| CN102525400B CN102525400B (en) | 2013-09-25 |
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| CN 201210008476Expired - Fee RelatedCN102525400B (en) | 2012-01-12 | 2012-01-12 | Intelligent eyesight detecting device with binocular cameras |
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