CN101931789A - High-resolution human figure automatic recording and comparing system and method in key region - Google Patents
High-resolution human figure automatic recording and comparing system and method in key region Download PDFInfo
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Abstract
The invention relates to high-resolution human figure automatic recording and comparing system and method in a key region. The system comprises a video detecting module, an image acquisition module, a suspected face comparing module and an alarming module. The method comprises the following steps of: scanning and comparing a detection region by the video detecting module in real time; sending a triggering signal to the image acquisition module if a number of pixel information of a detection stripe band exceeds the preset threshold; acquiring the current image information by the image acquisition module through a network camera to form member face records and sending the records to the suspected face comparing module; comparing and matching suspected face information hierarchically one by one by the suspected face comparing module; if the suspected face information is matched successfully, sending alarming information to the alarming module; and carrying out alarming processing by the alarming module according to the alarming information. By adopting the high-resolution human figure automatic recording and comparing system and method in the key region, the system power consumption is reduced, the energy is save, no pollution is caused to the environment, the comparing times of the system is reduced, and the comparing efficiency is improved. The high-resolution human figure automatic recording and comparing system and method in the key region are suitable for large-scale suspected face comparison.
Description
Technical field
The present invention relates to public safety field, particularly key area security protection and portrait monitoring technique field specifically are meant high-resolution human figure automatic recording and comparison system and method thereof in a kind of key area.
Background technology
Along with the tissue of large-scale international activities such as the Olympic Games, World Expo with hold, carry out the technology and the means of safety precaution at the specific region and also paid attention to by government and related management department day by day.Wherein, at the identification of people's biological characteristic, be to press in the public safety prevention work at present, also be that difficulty is very big simultaneously.Fingerprint recognition, the identification of face picture, iris recognition, voice recognition, palmmprint identification etc. have been contained in the existing research in this field, wherein face has applied range, lays conveniently, the stream of people is influenced advantages such as little, that cost is lower as recognition technology, becomes main research direction.
In traditional mode of operation, note the face image pattern picture that enters the specific region personnel by picture pick-up device (as digital camera, technical grade ccd video camera etc.), then by artificial mode, carry out the comparison and the investigation of portrait.This mode of operation under the situation that a small amount of comparison object (being no more than 10 usually) only arranged, also can normally be carried out.Along with the increase of need comparisons number of objects, will make operating personnel's workload be progression and enlarge, cause that workload is huge, speed is slow, efficient is low, missing rate is high, can't satisfy the business demand that public safety is taken precautions against.
As mentioned above, human figure automatic recording and comparison system are a kind of otherwise effective technique that addresses the above problem, and there is the following problem and shortage in actual applications in this system at present:
(1) people's image sharpness of Cai Jiing is not enough: at present technical grade CCD analog video cameras that adopt, its resolution is about 400,000 more.In the collection of personnel's face picture, the regional extent of monitoring and the definition of face picture are two aspects of contradiction each other, under the certain situation of image definition, if obtain personnel's face image pattern picture more clearly, just need amplify the area of people's face in entire image as far as possible, can cause monitoring range too small thus, system applies is very limited; Otherwise, enlarge the scope of monitoring, often can't obtain satisfied face image sharpness;
The personnel that need enter the specific region when (2) system carries out IMAQ usually remain static, so just can capture definition personnel face image pattern picture, but this kind mode has influenced normally advancing of the stream of people, significantly reduces this regional traffic efficiency, has limited the scope of system applies;
(3) when the quantity of comparison object surpasses some (generally reaching ten thousand grades), the success rate of system's comparison obviously reduces, and remarkable the increasing of delaying time, and has limited the scale of system applies.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can realize that human figure automatic recording and comparison in the key area, accuracy rate height, adaptability are strong, stable and reliable working performance, scope of application high-resolution human figure automatic recording and comparison system and the method thereof in the key area comparatively widely.
In order to realize above-mentioned purpose, high-resolution human figure automatic recording in the key area of the present invention and comparison system and method thereof are as follows:
High-resolution human figure automatic recording in this key area and comparison system, its main feature is to comprise:
The Video Detection module, this Video Detection module is carried out real time scan and comparison to surveyed area, and sends triggering signal in real time;
Image capture module, this image capture module receive the triggering signal that described Video Detection module sends, and obtain present image information by web camera, form personnel's face as recorded information and transmission;
The suspicion face is as comparing module, and this suspicion face receives personnel's face that described image capture module sends as recorded information as comparing module, and carries out one by one size scale to coupling with the suspicion face as information;
Alarm module receives the warning message of suspicion face as comparing module, and reports to the police accordingly and handle operation.
Also comprise in high-resolution human figure automatic recording in this key area and the comparison system:
Supplementary lighting module, this supplementary lighting module receive the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopt corresponding light-filling strategy to carry out the environment light filling.
Supplementary lighting module in high-resolution human figure automatic recording in this key area and the comparison system comprises led light source unit and light filling control unit, and described Video Detection module is connected with described led light source unit by described light filling control unit.
Video Detection module in high-resolution human figure automatic recording in this key area and the comparison system delimited many test strips in surveyed area, and adopt the mode of video analysis that surveyed area is carried out real time scan and comparison.
Web camera in high-resolution human figure automatic recording in this key area and the comparison system is a technical grade high definition web camera.
Alarm module in high-resolution human figure automatic recording in this key area and the comparison system is software alarm module or sound and light alarm module.
Should be based on the high-resolution human figure automatic recording in above-mentioned system's realization key area and the method for comparison, its main feature is that described method may further comprise the steps:
(1) described Video Detection module delimited many test strips in surveyed area, and by the video analysis mode surveyed area carried out real time scan and comparison;
(2) surpass the threshold value of systemic presupposition if this Video Detection module is found the numbering of the Pixel Information of described test strip, then send triggering signal to image capture module;
(3) described image capture module receives this triggering signal, and obtains present image information by web camera, forms to deliver to described suspicion face as comparing module after personnel's face picture writes down;
(4) described suspicion face receives personnel's face picture record as comparing module, carries out the suspicion face and as the size scale one by one of information matching treatment is operated;
(5) if the match is successful in comparison, then send warning message to described alarm module;
(6) described alarm module is reported to the police accordingly according to the warning message that receives and is handled operation.
Step (2) back in the high-resolution human figure automatic recording in this realization key area and the method for comparison is further comprising the steps of:
(21) described Video Detection module sends described triggering signal to described supplementary lighting module;
(22) described supplementary lighting module receives the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopts corresponding light-filling strategy to carry out the environment light filling.
Suspicion face in the high-resolution human figure automatic recording in this realization key area and the method for comparison is operated matching treatment as the size scale one by one of information, may further comprise the steps:
(41) described suspicion face is analyzed and is handled received personnel's face picture record as comparing module, extracts wherein common feature information and personal characteristics information;
(42) described suspicion face one by one carries out elementary comparison coupling with described common feature information and suspicion face as the common feature of all categories of the representative in the storehouse as comparing module;
(43) if the match is successful in comparison, then the suspicion face with described personal characteristics information and coupling carries out secondary comparison coupling as the personal characteristics in the classification;
(44), then revise the attribute information of this personnel's face picture record, and return the contrast result that the match is successful if the match is successful in comparison.
High-resolution human figure automatic recording and comparison system and method thereof in the key area of this invention have been adopted, owing to wherein adopted technical grade high definition web camera, thereby solved the contradiction between face image sharpness and the monitoring range, guarantee the high speed of image, gather clearly and handle, adopted the image effect under the various environment of highlighted LED light filling technique guarantee simultaneously, significantly reduced system power dissipation, energy-conserving and environment-protective, and the employing size scale is to the method for coupling and cluster analysis, significantly reduced the number of times of system's contrast, improve the efficient of comparison, be applicable to large-scale suspicion face picture comparison application, the accuracy rate height, simultaneous adaptation is strong, stable and reliable working performance, the scope of application are comparatively extensive.
Description of drawings
Fig. 1 is the high-resolution human figure automatic recording in the key area of the present invention and the overall flow figure of comparison method.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
High-resolution human figure automatic recording in this key area and comparison system wherein, comprising:
(1) Video Detection module, this Video Detection module is carried out real time scan and comparison to surveyed area, and sends triggering signal in real time; This Video Detection module delimited many test strips in surveyed area, and adopt the mode of video analysis that surveyed area is carried out real time scan and comparison;
(2) image capture module, this image capture module receive the triggering signal that described Video Detection module sends, and obtain present image information by web camera, form personnel's face as recorded information and transmission; This web camera is a technical grade high definition web camera;
(3) supplementary lighting module, this supplementary lighting module receive the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopt corresponding light-filling strategy to carry out the environment light filling; This supplementary lighting module comprises led light source unit and light filling control unit, and described Video Detection module is connected with described led light source unit by described light filling control unit;
(4) the suspicion face is as comparing module, and this suspicion face receives personnel's face that described image capture module sends as recorded information as comparing module, and carries out one by one size scale to coupling with the suspicion face as information;
(5) alarm module receives the warning message of suspicion face as comparing module, and reports to the police accordingly and handle operation; This alarm module is software alarm module or sound and light alarm module.
See also shown in Figure 1ly, should realize the high-resolution human figure automatic recording in the key area and the method for comparison based on above-mentioned system, comprising following steps:
(1) described Video Detection module delimited many test strips in surveyed area, and by the video analysis mode surveyed area carried out real time scan and comparison;
(2) surpass the threshold value of systemic presupposition if this Video Detection module is found the numbering of the Pixel Information of described test strip, then send triggering signal to image capture module;
(3) described Video Detection module sends described triggering signal to described supplementary lighting module;
(4) described supplementary lighting module receives the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopts corresponding light-filling strategy to carry out the environment light filling;
(5) described image capture module receives this triggering signal, and obtains present image information by web camera, forms to deliver to described suspicion face as comparing module after personnel's face picture writes down;
(6) described suspicion face receives personnel's face picture record as comparing module, carries out the suspicion face and as the size scale one by one of information matching treatment is operated, and may further comprise the steps:
(a) described suspicion face is analyzed and is handled received personnel's face picture record as comparing module, extracts wherein common feature information and personal characteristics information;
(b) described suspicion face one by one carries out elementary comparison coupling with described common feature information and suspicion face as the common feature of all categories of the representative in the storehouse as comparing module;
(c) if the match is successful in comparison, then the suspicion face with described personal characteristics information and coupling carries out secondary comparison coupling as the personal characteristics in the classification;
(d), then revise the attribute information of this personnel's face picture record, and return the contrast result that the match is successful if the match is successful in comparison;
(7) if the match is successful in comparison, then send warning message to described alarm module;
(8) described alarm module is reported to the police accordingly according to the warning message that receives and is handled operation.
In the middle of reality was used, implementation procedure of the present invention was as follows:
1,,, and high-resolution human figure automatic recording equipment (comprising Video Detection module, image capture module, supplementary lighting module and relevant treatment Control Software module) is installed according to the construction process requirement of high-resolution human figure automatic recording system at the monitoring point key area;
2, set up communication network, realize that the network between high-resolution human figure recording equipment and the rear end suspicion face picture comparison system is unimpeded, as close together (less than 50 meters), select the direct-connected mode of netting twine for use; More then adopt the fiber optic network communication modes as distance;
3, by the Video Detection module, obtain the image information of monitored area in real time, and compare with the background model of setting up, there are personnel to enter this zone as finding, then trigger video acquisition module and supplementary lighting module, wherein supplementary lighting module is selected light-filling strategy according to ambient light illumination on every side, and video acquisition module is gathered current images simultaneously, and image is relayed to rear end suspicion face as comparing module;
4, the suspicion face obtains the image information of current collection as comparing module, the face image pattern is looked like to analyze and handle, " common feature " and " personal characteristics " information of extraction, at first, carry out elementary comparison with the suspicion face as the representative Ge Lie in the storehouse other " common feature ", as compare success, then carry out the comparison of " personal characteristics " secondary in as classification at this suspicion face, as comparing once more successfully, then drive alarm module immediately, provide the site administrator to be disposed.Disposal finishes, and the attribute information of this suspicion face picture of corresponding modify then repeats comparison and reports to the police avoiding.
The function of each module is as follows:
(1) Video Detection module: by in surveyed area, delimiting many test strips, adopt the mode of video analysis that surveyed area is carried out real time scan and comparison, as the numbering of finding the Pixel Information of test strip surpasses the threshold value that is limited, and then sends triggering signal to image capture module and supplementary lighting module;
(2) image capture module: receive triggering signal, then, obtain present image information by technical grade high definition web camera; Formation personnel face picture record is relayed to rear end suspicion face simultaneously as comparing module;
(3) supplementary lighting module: receive triggering signal,, adopt corresponding light-filling strategy then according to the environmental condition of current monitored area;
(4) the suspicion face is as comparing module: receive personnel's face picture record of current collection, to carry out one by one size scale as information right with the suspicion face: " elementary comparison " and " secondary comparison ", as compare success, and then drive alarm module;
(5) alarm module: multiple alarm modes such as field software warning, audible-visual annunciator are provided.
The key technology that is adopted in the technical scheme of the present invention is as follows:
1, the technical grade high definition web camera of the built-in DSP of customization
Different with traditional simulation ccd video camera and ordinary digital camera, this system adopts up-to-date technical grade high definition web camera at present, technical grade product has guaranteed the stability that system ran without interruption in 7 * 24 hours, high definition has then effectively solved the contradiction between face image sharpness and the monitoring range, the pixel value that can guarantee every pictures face picture is not less than 2000 pixels, cover horizontal span and be not less than 4 meters, simultaneously built-in DSP module realizes various advanced persons' analysis and treatment technology is wherein built-in, guarantees the high speed of image, gathers clearly and handles.
2, research and development meet the video detection technology of stream of people's kinetic characteristic
Characteristic to stream of people's motion is analysed in depth, and the proposition that takes the lead in, detects in real time and analyzes each the individual movement locus among the stream of people that advances as automatic positioning technology based on multiobject personnel's face, has significantly reduced the useless sheet rate of IMAQ and has leaked the bat rate.
3, the image effect under the various environment of the highlighted LED light filling technique guarantee of employing
Adopt the highest led light source of present light efficiency, by rational optical design and scattering design, and be complementary with the sensitivity spectrum of technical grade high definition web camera, realize that the LED light filling lamp of low-power consumption also can reach the effect of high power light filling lamp, significantly reduce the power consumption of integral device, have the considerable energy saving environment-friendly advantage.
4, function is imitated, compared automatically to the large-scale face image height of realization
By above-mentioned technology, reduce the useless sheet rate of IMAQ on the one hand, improve the quality of IMAQ; On the other hand, system is when carrying out the comparison operation, adopt the right strategy of size scale, promptly the suspicion face is carried out cluster analysis as the storehouse, extract common feature and personal characteristics, and carry out type according to common feature and divide, each suspicion face picture all has by the two-stage feature and forms in view of the above: common feature and personal characteristics.When carrying out the comparison of face picture, the video image of collection also can carry out signature analysis earlier, and at first compares common feature, as compares success, in having the suspicion face picture group of this common feature, compares its personal characteristics one by one, thereby produces final comparison conclusion again.The employing said method, the number of times of significantly minimizing system contrast improves the efficient of comparison, is applicable in the large-scale suspicion face picture comparison application.
High-resolution human figure automatic recording and comparison system and method thereof in the above-mentioned key area have been adopted, owing to wherein adopted technical grade high definition web camera, thereby solved the contradiction between face image sharpness and the monitoring range, guarantee the high speed of image, gather clearly and handle, adopted the image effect under the various environment of highlighted LED light filling technique guarantee simultaneously, significantly reduced system power dissipation, energy-conserving and environment-protective, and the employing size scale is to the method for coupling and cluster analysis, significantly reduced the number of times of system's contrast, improve the efficient of comparison, be applicable to large-scale suspicion face picture comparison application, the accuracy rate height, simultaneous adaptation is strong, stable and reliable working performance, the scope of application are comparatively extensive.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. high-resolution human figure automatic recording and the comparison system in the key area is characterized in that, comprising:
The Video Detection module, this Video Detection module is carried out real time scan and comparison to surveyed area, and sends triggering signal in real time;
Image capture module, this image capture module receive the triggering signal that described Video Detection module sends, and obtain present image information by web camera, form personnel's face as recorded information and transmission;
The suspicion face is as comparing module, and this suspicion face receives personnel's face that described image capture module sends as recorded information as comparing module, and carries out one by one size scale to coupling with the suspicion face as information;
Alarm module receives the warning message of suspicion face as comparing module, and reports to the police accordingly and handle operation.
2. high-resolution human figure automatic recording in the key area according to claim 1 and comparison system is characterized in that, also comprise in the described system:
Supplementary lighting module, this supplementary lighting module receive the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopt corresponding light-filling strategy to carry out the environment light filling.
3. high-resolution human figure automatic recording in the key area according to claim 2 and comparison system, it is characterized in that, described supplementary lighting module comprises led light source unit and light filling control unit, and described Video Detection module is connected with described led light source unit by described light filling control unit.
4. according to high-resolution human figure automatic recording in each described key area in the claim 1 to 3 and comparison system, it is characterized in that, described Video Detection module delimited many test strips in surveyed area, and adopt the mode of video analysis that surveyed area is carried out real time scan and comparison.
5. according to high-resolution human figure automatic recording in each described key area in the claim 1 to 3 and comparison system, it is characterized in that described web camera is a technical grade high definition web camera.
6. according to high-resolution human figure automatic recording in each described key area in the claim 1 to 3 and comparison system, it is characterized in that described alarm module is software alarm module or sound and light alarm module.
7. realize the high-resolution human figure automatic recording in the key area and the method for comparison based on the described system of claim 1 for one kind, it is characterized in that described method may further comprise the steps:
(1) described Video Detection module delimited many test strips in surveyed area, and by the video analysis mode surveyed area carried out real time scan and comparison;
(2) surpass the threshold value of systemic presupposition if this Video Detection module is found the numbering of the Pixel Information of described test strip, then send triggering signal to image capture module;
(3) described image capture module receives this triggering signal, and obtains present image information by web camera, forms to deliver to described suspicion face as comparing module after personnel's face picture writes down;
(4) described suspicion face receives personnel's face picture record as comparing module, carries out the suspicion face and as the size scale one by one of information matching treatment is operated;
(5) if the match is successful in comparison, then send warning message to described alarm module;
(6) described alarm module is reported to the police accordingly according to the warning message that receives and is handled operation.
8. the high-resolution human figure automatic recording in the realization key area according to claim 7 and the method for comparison is characterized in that, also comprise supplementary lighting module in the described system, and described step (2) back is further comprising the steps of:
(21) described Video Detection module sends described triggering signal to described supplementary lighting module;
(22) described supplementary lighting module receives the triggering signal that described Video Detection module sends, and according to the environmental condition of current monitored area, adopts corresponding light-filling strategy to carry out the environment light filling.
9. according to the high-resolution human figure automatic recording in claim 7 or the 8 described realization key areas and the method for comparison, it is characterized in that described suspicion face is operated matching treatment as the size scale one by one of information, may further comprise the steps:
(41) described suspicion face is analyzed and is handled received personnel's face picture record as comparing module, extracts wherein common feature information and personal characteristics information;
(42) described suspicion face one by one carries out elementary comparison coupling with described common feature information and suspicion face as the common feature of all categories of the representative in the storehouse as comparing module;
(43) if the match is successful in comparison, then the suspicion face with described personal characteristics information and coupling carries out secondary comparison coupling as the personal characteristics in the classification;
(44), then revise the attribute information of this personnel's face picture record, and return the contrast result that the match is successful if the match is successful in comparison.
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Application publication date: 20101229 |