Summary of the invention
To solve the above-mentioned problems, the security method based on image procossing that the present invention provides a kind of, can close in car ownerAfter closing engine and locking to four car doors, the position of active detecting vehicle window and the gap of vehicle window, particular, it is important that rightDuring forms target identification, target area and non-target area are obtained by the way of to image analysis edge line to be identifiedIt feeds back after the subsequent recognition failures of target area to adjust acquisition of the images to be recognized to target area, and recycle identification in domainProcess is until identifying successfully.
More specifically, the present invention at least has the important inventive point in following a few places:
(1) target area and nontarget area are obtained by the way of to image analysis edge line to be identified, it is more crucial, after the subsequent recognition failures of target area, feed back to adjust acquisition of the images to be recognized to target area, and recycle knowledgeFor other process until identifying successfully, the target identification mode of this circulation feedback reduces the operational data amount and meter of identificationCalculate complexity；
(2) different features is distributed based on both form region and non-form region lightness to identify forms target,Improve the accuracy of identification of forms target；
(3) the texture variations amplitude of pre-acquisition image is analyzed, by the built-in skin texture detection unit of camera to be based on obtainingThe texture variations amplitude adjustment camera obtained finally shoots the real-time resolution of image, thus guaranteeing subsequent image treatment effectWhile, reduce unnecessary image operation and energy loss；
(4) on the basis of accurate forms detect, the situation of cracking of vehicle window is detected, in the unmanned situation of automobileUnder, symmetry slot situation carries out and alarm.
According to an aspect of the present invention, a kind of security method based on image procossing is provided, this method includes using vapourThe vehicle window body alarm platform that cracks is detected with the situation of cracking to vehicle window, and the cracking situation based on vehicle window formulates corresponding reportPithy to omit, the automotive window alarm platform that cracks includes:
The front end of automobile is arranged in car door detection device, connect respectively with four Car's door controlling devices of automobile, the car doorDetection device is used to receive the current state of each car door, and the car door detection device is also used to determining that four car doors are all passWhen closed state, lock signal on car door is issued, otherwise, the non-lock signal of car door is issued and is simultaneously emitted by unlocked door position；
The front end of automobile is arranged in engine condition analytical equipment, connect with the engine of automobile, the engine conditionAnalytical equipment is for detecting whether engine is in flameout state, accordingly to issue misfire detection signal or operation detection signal；
Starting device is imaged, is connect respectively with the engine condition analytical equipment and the car door detection device, it is describedIt images starting device to be used in lock signal on receiving the misfire detection signal and the car door, controls interior cameraStructure enters screening-mode, otherwise, controls interior photographic unit and exits screening-mode；
Interior photographic unit is arranged in automotive interior, for automobile indoor setting image to be shot and exported to automobile indoor setting,The car photographic unit is built-in with pre-acquired unit, skin texture detection unit and resolution adjustment unit；
Window frame detection device, is arranged in the instrument board of automobile, connect with the interior photographic unit, described for receivingAutomobile indoor setting image carries out edge detection to the content in the automobile indoor setting image, to obtain in the automobile indoor setting imageMultiple edge lines, the multiple edge line includes multiple horizontal edge lines, multiple vertical edge lines and multiple other types sidesEdge line takes the horizontal edge line of the horizontal edge line of the top and bottom in the multiple horizontal edge line, takes multiple verticalThe vertical edge line of the vertical edge line of the leftmost side and the rightmost side in edge line obtains rectangle subgraph based on above-mentioned four edges edge linePicture.
Specific embodiment
The crack embodiment of alarm platform of automotive window of the invention is described in detail below with reference to accompanying drawings.
The vehicle window of automobile while the car is driving, open gap size and whether open be it is inessential,Because in the driving process of automobile, criminal is difficult to go automotive interior to execute malfeasance through vehicle window gap.
It walks to close the good habit of window however, some car owners do not form people, causes automobile after stopping traveling, Che ZhuguanAfter closing automobile engine and locking to four car doors, there is no the gaps for observing vehicle window whether there is, i.e., is without observation vehicle windowIt is no to completely close, in this way, once there is criminal to notice such vehicle, the loss of small then interior property, greatly then automobile sheetBody is stolen, all can cause economic loss to automotive vehicle owner.
In order to overcome above-mentioned deficiency, the present invention has built a kind of security method based on image procossing, and this method includes makingDetected with the automotive window alarm platform that cracks with the situation of cracking to vehicle window, and the situation of cracking based on vehicle window formulate it is correspondingAlarm strategy.The automotive window crack alarm platform solve above-mentioned technical problem.
Fig. 1 is cracks the knot of automotive window that alarm platform is monitored according to the automotive window shown in embodiment of the present inventionStructure schematic diagram.
Fig. 2 is the structural block diagram of alarm platform of being cracked according to the automotive window shown in embodiment of the present invention, described flatPlatform includes:
The front end of automobile is arranged in car door detection device, connect respectively with four Car's door controlling devices of automobile；
Four Car's door controlling devices, be respectively used to control automobile it is left front, right before, it is left back, right after four car doors；
Wherein, the car door detection device is used to receive the current state of each car door；
Wherein, the car door detection device is also used to when determining that four car doors are all in off state, and issues car door lockingOtherwise signal issues the non-lock signal of car door and is simultaneously emitted by unlocked door position.
Then, the specific structure of alarm platform of continuing to crack to automotive window of the invention is further detailed.
The automotive window is cracked in alarm platform
The front end of automobile is arranged in engine condition analytical equipment, connect with the engine of automobile；
Wherein, the engine condition analytical equipment is for detecting whether engine is in flameout state, accordingly to issueMisfire detection signal or operation detection signal.
The automotive window is cracked in alarm platform
Starting device is imaged, is connect respectively with the engine condition analytical equipment and the car door detection device；
Wherein, the camera shooting starting device is used for the lock signal on receiving the misfire detection signal and the car doorWhen, it controls interior photographic unit and enters screening-mode, otherwise, control interior photographic unit and exit screening-mode.
The automotive window is cracked in alarm platform
Interior photographic unit is arranged in automotive interior, for automobile indoor setting image to be shot and exported to automobile indoor setting,The car photographic unit is built-in with pre-acquired unit, skin texture detection unit and resolution adjustment unit；
The pre-acquired unit is used to carry out image pre-acquired to automobile indoor setting to obtain pre-acquisition image；
The skin texture detection unit is connect with the pre-acquired unit, for receiving described in the pre-acquisition image and estimationThe texture variations amplitude of pre-acquisition image；
The resolution adjustment unit is connect with the skin texture detection unit, for the texture based on the pre-acquisition imageAmplitude of variation adjusts the resolution ratio of the automobile indoor setting image of the interior photographic unit shooting；Wherein, the resolution adjustment listMember adjusts the resolution ratio of the high-definition image of the interior photographic unit shooting based on the texture variations amplitude of the pre-acquisition imageInclude: the pre-acquisition image texture variations amplitude it is bigger, it is described car photographic unit shooting high-definition image resolution ratioIt is higher；
Window frame detection device, is arranged in the instrument board of automobile, connect with the interior photographic unit, described for receivingAutomobile indoor setting image carries out edge detection to the content in the automobile indoor setting image, to obtain in the automobile indoor setting imageMultiple edge lines, the multiple edge line includes multiple horizontal edge lines, multiple vertical edge lines and multiple other types sidesEdge line takes the horizontal edge line of the horizontal edge line of the top and bottom in the multiple horizontal edge line, takes multiple verticalThe vertical edge line of the vertical edge line of the leftmost side and the rightmost side in edge line obtains rectangle subgraph based on above-mentioned four edges edge linePicture；
Lightness detection device is connect with the window frame detection device, for receiving the automobile indoor setting image and the squareThe region of the non-rectangle subgraph in the automobile indoor setting image is determined as non-form region by shape subgraph, will be describedRegion of the rectangle subgraph in the automobile indoor setting image is determined as form region；For each of described form regionPixel, calculate it is centered on it, around in 7 pixels × 7 pixel regions the lightness of each pixel average value using asIts mean lightness, it is corresponding average that the mean lightness based on each pixel in the form region obtains the form regionLightness image；For each of non-form region pixel, centered on it, surrounding 7 pixels × 7 pixels are calculatedThe average value of the lightness of each pixel is using as its mean lightness in region, based on each pixel in the non-form regionThe mean lightness of point obtains the corresponding mean lightness image of the non-form region；
Forms identify equipment, connect with the lightness detection device, for the mean lightness image to the form regionStatistics with histogram is executed, obtains the histogram vectors of the corresponding lightness of the form region using as forms histogram vectors, it is rightThe mean lightness image of the non-form region executes statistics with histogram, obtains the histogram of the corresponding lightness of the non-form regionFigure vector is big in non-forms histogram and the mould of the difference of forms histogram vectors to be also used to as non-forms histogram vectorsWhen being equal to default lightness difference, identification success signal is issued, and the form region is exported, and in non-forms histogramWhen being less than default lightness difference with the mould of the difference of forms histogram vectors, recognition failures signal is issued；
Embedded processing chip, is arranged in the instrument board of automobile, identifies equipment and the window frame with the forms respectivelyDetection device connection, for when receiving the identification success signal, by built-in state register tagging be 1 with stopping to instituteThe forms identification for stating automobile indoor setting image, is also used to when receiving the recognition failures signal, by built-in state register markIt is denoted as 0 area that the rectangle subgraph is reduced to control the window frame detection device based on the multiple edge line, in order toThe processing again of the lightness detection device and forms identification equipment；Wherein, the embedded processing chip is also used toIt after receiving the identification success signal, cracks to form region execution and detects operation, and confirming the form regionIt is middle to issue alarm signal of cracking in the presence of when cracking, otherwise, issue forms normal signal.
The automotive window is cracked in alarm platform
Mobile communication interface is connect with the embedded processing chip；
Wherein, the mobile communication interface be used for receive it is described crack detection operation when, will be with the detection of crackingCorresponding text information warning is operated to be sent at the portable terminal of automotive vehicle owner or at the Operation Server of automobile operator.
And the automotive window is cracked in alarm platform:
The lightness detection device and forms identification equipment are all disposed in the instrument board of automobile；
The roof of automobile is arranged in the mobile communication interface.
In addition, DSP processing chip, which can be used, replaces the embedded processing chip.DSP handles chip, also referred to as digital signalProcessor is a kind of microprocessor particularly suitable for carrying out Digital Signal Processing operation, and main application is real-time, quicklyRealize various digital signal processing algorithms.
According to the requirement of Digital Signal Processing, DSP processing chip generally has following main feature: (1) instructing at oneAn achievable multiplication and a sub-addition in period；(2) program and data space is separated, can simultaneously access instruction and data；(3) there is quick RAM in piece, can usually be accessed simultaneously in two pieces by independent data/address bus；(4) there is low overhead or nothingOverhead loop and the hardware supported jumped；(5) quickly interrupt processing and Hardware I/O are supported；(6) have and operated within the monocycleMultiple hardware address generators；(7) multiple operations can be executed parallel；(8) support pile line operation, make fetching, decoding andThe operations such as execution can be with Overlapped Execution.
It is cracked alarm platform using automotive window of the invention, for lacking forms under parking of automobile state in the prior artCrack testing mechanism the technical issues of, by high-precision, targeted image recognition technology means, use circulation feedback meshMark identification method, the accurate position for obtaining automotive window, and the master that progress automotive window is cracked in the case where automobile is in dead ship conditionDynamic detection, and initiative alarming is carried out when automotive window exists and cracks.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not toLimit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised asWith the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the inventionAny simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protectionIt is interior.