CN101835032A - Multi-camera crowd-gathered message statistic device and method - Google Patents
Multi-camera crowd-gathered message statistic device and method Download PDFInfo
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Abstract
The invention discloses multi-camera crowd-gathered message statistic device and method. The method comprises the following steps of: obtaining visible images and infrared images of human objects in a monitored region by at least three monitoring camera subassemblies arranged in different monitoring positions of a monitored region, wherein each monitoring camera subassembly comprises a visible camera, an infrared camera and a bracket; transmitting the visible images and the infrared images into a computer by a video collecting and coding device to register and inosculate in order to form a combination image; identifying the mode of the combination image by the computer to obtain a human object position and a gathering message; eliminating a forged human object according to the object thermal radiation condition in the infrared images; eliminating identification errors caused by sheltering and forged objects by the computer which carries out arbitration treatment aiming at different human object position messages of the combination images obtained by the camera subassemblies after mode identification; proving geometric parameters and optical parameters of the camera subassemblies by a proving device; and alarming by an alarm device when the crowd gathering is ensured to be detected.
Description
Technical field
The invention belongs to computer vision field, be specifically related to the reliable apparatus and method of calculating the crowd massing information of area to be monitored in a kind of safety monitoring.
Background technology
In protection and monitor field, particularly in the identification of supervision over prisoners at the prison, vehicular traffic situation, often need the crowd of area to be monitored be counted, whether tracking even identification exist the crowd massing phenomenon.
Traditional monitoring method is manually to monitor and count, and need settle the security protection personnel in the area to be monitored, and efficient is low, poor accuracy, can't realize objective differentiation, only can be as the short time, use among a small circle.
In order to overcome the deficiency in artificial supervision of tradition and the counting, the video monitoring technology has appearred both at home and abroad, promptly show by camera acquisition image that is installed in the area to be monitored and the monitor that is uploaded to the control room, the operator on duty judges the state of monitored object according to live video, this method can realize that multiple spot monitors simultaneously, need not settle the security protection personnel in the area to be monitored, but, because this method remains the people as human observer, so on monitoring capacity, there are a lot of limitations, the accuracy that causes reporting to the police is poor, wrong report and to fail to report phenomenon many, alarm time is long, problems such as video recording data analysis difficulty, and then cause whole system fail safe and practicality to reduce, can't satisfy the very high place of security level required.
At present, widely used closed monitor system adopts matrix host computer control in the safety monitoring both at home and abroad, monitors the leading portion monitored picture by video wall, adopts the long delay analog vtr to record a video and playback.The video monitoring mode of this quasi-tradition can only be used for collecting evidence mostly the time afterwards, can't play the effect of prevention, early warning.
Development along with computer vision technique, some intelligent video monitoring methods based on mode identification technology have appearred both at home and abroad, the image of the human body target by being installed in on-the-spot camera acquisition area to be monitored, the state of the human body target in identification and the process decision chart picture.Yet above-mentioned intelligent video monitoring method based on mode identification technology can't overcome following difficult point:
(1) blocks when the video monitoring target exists, when particularly blocking for a long time, can't realize the reliable location of target;
(2) at safety-security area, in the safety monitoring of key area, pseudo-targets such as dummy, picture may appear particularly, and this method can't realize eliminating the false and retaining the true;
(3) under the situation of night or low visibility, said method can't be realized reliable monitoring.
Summary of the invention
One of purpose of the present invention is, a kind of multi-camera crowd-gathered message statistic device is provided.
To achieve these goals,, provide a kind of multi-camera crowd-gathered message statistic device, specifically comprise according to the present invention:
At least three covers are monitored camera assemblies, are arranged in the different monitoring locations of area to be monitored, are used for from different perspectives the human body target in the same area to be monitored being implemented on-line monitoring; Wherein, above-mentioned every cover monitoring camera assembly comprises at least one visible light camera and at least one thermal camera, is used for gathering the visible images and the infrared image of human body target in the area to be monitored respectively;
At least one cover video acquisition code device, this video acquisition code device links to each other with thermal camera with visible light camera in the above-mentioned monitoring camera assembly, is used for the vision signal that visible light camera and thermal camera with above-mentioned monitoring camera assembly collect and changes digital signal respectively into;
At least one computer, this at least one computer links to each other with above-mentioned video acquisition code device, above-mentioned visible light camera is changed the digital signal and the above-mentioned thermal camera digital signal that transformation obtains through the video acquisition code device that obtain through the video acquisition code device carry out registration according to spatial relation, and merge according to the weight proportion of setting, after merging, obtain combination picture, above-mentioned at least one computer carries out human body target identification according to above-mentioned combination picture and crowd-gathered message statistic calculates;
At least three The Cloud Terraces, every The Cloud Terrace and the above-mentioned monitoring camera assembly mechanical connection of a cover, being used for driving above-mentioned monitoring camera assembly carries out up and down or left rotation and right rotation, this drive monitoring camera assembly carry out up and down or the mode of left rotation and right rotation be the position of manual adjustment or human body target that above-mentioned at least one computer recognized in combination picture as feedback signal, control the The Cloud Terrace adjustment automatically; Wherein, when a cover monitoring camera assembly is undertaken by above-mentioned The Cloud Terrace after the position adjusts, other each cover monitoring camera assemblies all link and carry out the position adjustment, guarantee that above-mentioned at least three covers monitor camera assemblies and all monitor same area to be monitored;
The caliberating device that at least one places in the area to be monitored is used for carrying out the geometric parameter and the optical parametric demarcation of above-mentioned monitoring camera assembly;
At least a warning device links to each other with above-mentioned at least one computer, is used for reporting to the police when detecting crowd massing.
A kind of optimal technical scheme is characterized in that: the service band of the thermal camera in the above-mentioned monitoring camera assembly is between 8-14 μ m.
A kind of optimal technical scheme is characterized in that: the caliberating device of above-mentioned monitoring camera assembly, can extended immobilization in the area to be monitored, perhaps, can remove after camera assembly geometric parameter and optical parametric are demarcated finishing.
A kind of optimal technical scheme is characterized in that: above-mentioned warning device is an audible-visual annunciator.
A kind of optimal technical scheme is characterized in that: the weight proportion of above-mentioned setting is adjustable, suitably increases the weight proportion of the view data of thermal camera under the lower situation of night, greasy weather or other visibility.
Another object of the present invention provides a kind of multi-camera crowd-gathered message statistic method.
For achieving the above object,, provide a kind of multi-camera crowd-gathered message statistic method, comprise step according to the present invention:
(1) uses at least three cover monitoring camera assemblies, be arranged in the different monitoring locations of area to be monitored, from different perspectives the human body target in the same area to be monitored is implemented on-line monitoring; Wherein, the above-mentioned monitoring camera assembly of every cover comprises at least one visible light camera and at least one thermal camera, is used for gathering the visible images and the infrared image of human body target in the area to be monitored respectively;
(2) use at least one cover video acquisition code device, this video acquisition code device links to each other with thermal camera with visible light camera in the above-mentioned monitoring camera assembly, is used for the vision signal that visible light camera and thermal camera with above-mentioned monitoring camera assembly collect and changes digital signal respectively into;
(3) use at least one computer, this at least one computer links to each other with above-mentioned video acquisition code device, above-mentioned visible light camera is changed the digital signal and the above-mentioned thermal camera digital signal that transformation obtains through the video acquisition code device that obtain through the video acquisition code device carry out registration according to spatial relation, and merge according to the weight proportion of setting, after merging, obtain combination picture, above-mentioned at least one computer carries out human body target identification according to above-mentioned combination picture and crowd-gathered message statistic calculates;
(4) above-mentioned at least one computer carries out in the human body target identifying according to above-mentioned combination picture, rejects the pseudo-human body target that heat does not meet body temperature by the thermal radiation situation in the view data of the above-mentioned thermal camera in the above-mentioned monitoring camera assembly;
When (5) position of the human body target that calculates according to each cover monitoring camera assembly when above-mentioned at least one computer and quantity are inequality, adopt arbitration step to obtain the real position and the quantity of the human body target of area to be monitored, wherein, arbitration step is: if above-mentioned at least one computer can recognize a certain human body target in the above-mentioned combination picture that the monitoring camera assembly more than half obtains, then hypothesis assert that this human body target exists earlier, otherwise identification does not exist; Next, nearer if the movement locus of the position of the human body target that above-mentioned hypothesis identification exists and this human body target that obtains by the Kalman Forecasting Methodology departs from, assert finally that then this human body target exists, otherwise assert and do not exist;
(6) use at least three The Cloud Terraces, every The Cloud Terrace and the above-mentioned monitoring camera assembly mechanical connection of a cover, driving above-mentioned monitoring camera assembly carries out up and down or left rotation and right rotation, this drive monitoring camera assembly carry out up and down or the mode of left rotation and right rotation be the position of manual adjustment or human body target that above-mentioned at least one computer recognized in combination picture as feedback signal, control the The Cloud Terrace adjustment automatically; Wherein, when a cover monitoring camera assembly is undertaken by above-mentioned The Cloud Terrace after the position adjusts, other each cover monitoring camera assemblies all link and carry out the position adjustment, guarantee that above-mentioned at least three covers monitor camera assemblies and all monitor same area to be monitored;
(7) use at least one to place caliberating device in the area to be monitored, carry out the geometric parameter and the optical parametric of above-mentioned monitoring camera assembly and demarcate;
(8) use at least a warning device, link to each other, be used for when detecting crowd massing, reporting to the police with above-mentioned at least one computer.
A kind of optimal technical scheme, it is characterized in that: above-mentioned crowd-gathered message statistic calculates and is specially: above-mentioned at least one computer analyzed the result's of above-mentioned human body target identification movement locus, and the decision condition of the crowd massing by prior formulation carries out the assessment of crowd massing degree.
A kind of optimal technical scheme is characterized in that: the decision condition of above-mentioned crowd massing is the interior time of designated blocks that rests on above-mentioned area to be monitored more than 3 people simultaneously to surpass a scheduled time value, and this scheduled time value is preferably 15 seconds.
The invention will be further described below by the drawings and specific embodiments, but do not mean that limiting the scope of the invention.
Description of drawings
Fig. 1 is the structural representation of multi-camera crowd-gathered message statistic device.
Fig. 2 is the multi-camera crowd-gathered message statistic method flow diagram.
Embodiment
Fig. 1 has shown the structure of a kind of multi-camera crowd-gathered message statistic device of the present invention.Multi-camera crowd-gathered message statistic device of the present invention comprises: camera assembly 1, caliberating device 6, video acquisition code device 7, computer 8, warning device 9, wherein, camera assembly comprises visible light camera 3, thermal camera 4, support 5, The Cloud Terrace 2.Visible light camera 2 and thermal camera 4 are combined by support 5, are connected with The Cloud Terrace 2, can the up and down or left and right direction rotate under the driving of The Cloud Terrace 2, form camera assembly 1.Caliberating device 6 is placed in the area to be monitored 10, and the geometric parameter and the optical parametric that are used for camera assembly 1 are demarcated.Video acquisition code device 7 is connected with visible light camera 3, the thermal camera 4 of camera assembly 1, is used for the video signal digitization with the area to be monitored.Computer 8 is connected with video acquisition code device 7, and go forward side by side pedestrian's body target localization and crowd-gathered message statistic of the signal that is used for receiver, video capturing and coding device output calculates.Warning device 9 is connected with computer 8, is used for reporting to the police when monitoring crowd massing.
Fig. 2 has shown the handling process of multi-camera crowd-gathered message statistic method.
(1) uses at least three cover monitoring camera assemblies, be arranged in the different monitoring locations of area to be monitored, from different perspectives the human body target in the same area to be monitored is implemented on-line monitoring; Wherein, the above-mentioned monitoring camera assembly of every cover comprises at least one visible light camera and at least one thermal camera, is used for gathering the visible images and the infrared image of human body target in the area to be monitored respectively;
(2) use at least one cover video acquisition code device, this video acquisition code device links to each other with thermal camera with visible light camera in the above-mentioned monitoring camera assembly, is used for the vision signal that visible light camera and thermal camera with above-mentioned monitoring camera assembly collect and changes digital signal respectively into;
(3) use at least one computer, this at least one computer links to each other with above-mentioned video acquisition code device, above-mentioned visible light camera is changed the digital signal and the above-mentioned thermal camera digital signal that transformation obtains through the video acquisition code device that obtain through the video acquisition code device carry out registration according to spatial relation, and merge according to the weight proportion of setting, after merging, obtain combination picture, above-mentioned at least one computer carries out human body target identification according to above-mentioned combination picture and crowd-gathered message statistic calculates;
(4) above-mentioned at least one computer carries out in the human body target identifying according to above-mentioned combination picture, rejects the pseudo-human body target that heat does not meet body temperature by the thermal radiation situation in the view data of the above-mentioned thermal camera in the above-mentioned monitoring camera assembly;
When (5) position of the human body target that calculates according to each cover monitoring camera assembly when above-mentioned at least one computer and quantity are inequality, adopt arbitration step to obtain the real position and the quantity of the human body target of area to be monitored, wherein, arbitration step is: if above-mentioned at least one computer can recognize a certain human body target in the above-mentioned combination picture that the monitoring camera assembly more than half obtains, then hypothesis assert that this human body target exists earlier, otherwise identification does not exist; Further, nearer if the movement locus of the position of the human body target that above-mentioned hypothesis identification exists and this human body target that obtains by the Kalman Forecasting Methodology departs from, assert that then this human body target exists, otherwise assert and do not exist;
(6) use at least three The Cloud Terraces, every The Cloud Terrace and the above-mentioned monitoring camera assembly mechanical connection of a cover, driving above-mentioned monitoring camera assembly carries out up and down or left rotation and right rotation, this drive monitoring camera assembly carry out up and down or the mode of left rotation and right rotation be the position of manual adjustment or human body target that above-mentioned at least one computer recognized in combination picture as feedback signal, control the The Cloud Terrace adjustment automatically; Wherein, when a cover monitoring camera assembly is undertaken by above-mentioned The Cloud Terrace after the position adjusts, other each cover monitoring camera assemblies all link and carry out the position adjustment, guarantee that above-mentioned at least three covers monitor camera assemblies and all monitor same area to be monitored;
(7) use at least one to place caliberating device in the area to be monitored, carry out the geometric parameter and the optical parametric of above-mentioned monitoring camera assembly and demarcate;
(8) use at least a warning device, link to each other, be used for when detecting crowd massing, reporting to the police with above-mentioned at least one computer.
A kind of optimal technical scheme, it is characterized in that: above-mentioned crowd-gathered message statistic calculates and is specially: above-mentioned at least one computer analyzed the result's of above-mentioned human body target identification movement locus, and the decision condition of the crowd massing by prior formulation carries out the assessment of crowd massing degree.
A kind of optimal technical scheme is characterized in that: the decision condition of above-mentioned crowd massing is the interior time of designated blocks that rests on above-mentioned area to be monitored more than 3 people simultaneously to surpass a scheduled time value, and this scheduled time value is preferably 15 seconds.
Useful achievement of the present invention: the present invention is by combining computer vision monitoring, Fusion, Kalman Predicting Technique, a kind of multi-camera crowd-gathered message statistic device and method are provided, solved the gathering crowd exist seriously block, the statistics difficult problem of crowd massing information under the serious congested conditions, can realize crowd's reliable counting and aggregation extent monitoring. The present invention all has good application and promotional value in all many-sides such as safety monitoring, prison administration, entry-exit management.
Claims (9)
1. multi-camera crowd-gathered message statistic device specifically comprises:
At least three covers are monitored camera assemblies, are arranged in the different monitoring locations of area to be monitored, are used for from different perspectives the human body target in the same area to be monitored being implemented on-line monitoring; Wherein, above-mentioned every cover monitoring camera assembly comprises at least one visible light camera and at least one thermal camera, is used for gathering the visible images and the infrared image of human body target in the area to be monitored respectively;
At least one cover video acquisition code device, this video acquisition code device links to each other with thermal camera with visible light camera in the above-mentioned monitoring camera assembly, is used for the vision signal that visible light camera and thermal camera with above-mentioned monitoring camera assembly collect and changes digital signal respectively into;
At least one computer, this at least one computer links to each other with above-mentioned video acquisition code device, above-mentioned visible light camera is changed the digital signal and the above-mentioned thermal camera digital signal that transformation obtains through the video acquisition code device that obtain through the video acquisition code device carry out registration according to spatial relation, and merge according to the weight proportion of setting, after merging, obtain combination picture, above-mentioned at least one computer carries out human body target identification according to above-mentioned combination picture and crowd-gathered message statistic calculates;
At least three The Cloud Terraces, every The Cloud Terrace and the above-mentioned monitoring camera assembly mechanical connection of a cover, being used for driving above-mentioned monitoring camera assembly carries out up and down or left rotation and right rotation, this drive monitoring camera assembly carry out up and down or the mode of left rotation and right rotation be the position of manual adjustment or human body target that above-mentioned at least one computer recognized in combination picture as feedback signal, control the The Cloud Terrace adjustment automatically; Wherein, when a cover monitoring camera assembly carries out the position adjustment by coupled above-mentioned The Cloud Terrace after, other each cover monitoring camera assemblies are all monitored same area to be monitored by The Cloud Terrace interlock the carrying out position adjustment that connects to guarantee above-mentioned at least three cover monitoring camera assemblies;
The caliberating device that at least one places in the area to be monitored is used for carrying out the geometric parameter and the optical parametric demarcation of above-mentioned monitoring camera assembly;
At least a warning device links to each other with above-mentioned at least one computer, is used for reporting to the police when detecting crowd massing.
2. multi-camera crowd-gathered message statistic device according to claim 1 is characterized in that: the service band of the thermal camera in the above-mentioned monitoring camera assembly is between 8-14 μ m.
3. multi-camera crowd-gathered message statistic device according to claim 1, it is characterized in that: the caliberating device of above-mentioned monitoring camera assembly, can extended immobilization in the area to be monitored, perhaps, can remove after camera assembly geometric parameter and optical parametric are demarcated finishing.
4. multi-camera crowd-gathered message statistic device according to claim 1 is characterized in that: above-mentioned warning device is an audible-visual annunciator.
5. multi-camera crowd-gathered message statistic device according to claim 1, it is characterized in that: the weight proportion of above-mentioned setting is adjustable, suitably increases the weight proportion of the view data of thermal camera under the lower situation of night, greasy weather or other visibility.
6. a multi-camera crowd-gathered message statistic method specifically comprises the steps:
(1) uses at least three cover monitoring camera assemblies, be arranged in the different monitoring locations of area to be monitored, from different perspectives the human body target in the same area to be monitored is implemented on-line monitoring; Wherein, the above-mentioned monitoring camera assembly of every cover comprises at least one visible light camera and at least one thermal camera, is used for gathering the visible images and the infrared image of human body target in the area to be monitored respectively;
(2) use at least one cover video acquisition code device, this video acquisition code device links to each other with thermal camera with visible light camera in the above-mentioned monitoring camera assembly, is used for the vision signal that visible light camera and thermal camera with above-mentioned monitoring camera assembly collect and changes digital signal respectively into;
(3) use at least one computer, this at least one computer links to each other with above-mentioned video acquisition code device, above-mentioned visible light camera is changed the digital signal and the above-mentioned thermal camera digital signal that transformation obtains through the video acquisition code device that obtain through the video acquisition code device carry out registration according to spatial relation, and merge according to the weight proportion of setting, after merging, obtain combination picture, above-mentioned at least one computer carries out human body target identification according to above-mentioned combination picture and crowd-gathered message statistic calculates;
(4) wherein, above-mentioned at least one computer carries out according to above-mentioned combination picture rejecting the pseudo-human body target that heat does not meet body temperature by the thermal radiation situation in the view data of the above-mentioned thermal camera in the above-mentioned monitoring camera assembly in the process of human body target identification;
When (5) position of the human body target that calculates according to each cover monitoring camera assembly when above-mentioned at least one computer and quantity are inequality, adopt arbitration step to obtain the real position and the quantity of the human body target of area to be monitored, wherein, arbitration step is: if above-mentioned at least one computer can recognize a certain human body target in the above-mentioned combination picture that the monitoring camera assembly more than half obtains, then hypothesis assert that this human body target exists earlier, otherwise identification does not exist; Next, nearer if the movement locus of the position of the human body target that above-mentioned hypothesis identification exists and this human body target that obtains by the movement locus Forecasting Methodology departs from, assert finally that then this human body target exists, otherwise assert and do not exist;
(6) use at least three The Cloud Terraces, every The Cloud Terrace and the above-mentioned monitoring camera assembly mechanical connection of a cover, driving above-mentioned monitoring camera assembly carries out up and down or left rotation and right rotation, this drive monitoring camera assembly carry out up and down or the mode of left rotation and right rotation be the position of manual adjustment or human body target that above-mentioned at least one computer recognized in combination picture as feedback signal, control the The Cloud Terrace adjustment automatically; Wherein, when a cover monitoring camera assembly is undertaken by coupled above-mentioned The Cloud Terrace after the position adjusts, other each cover monitoring camera assemblies all link and carry out the position adjustment, guarantee that above-mentioned at least three covers monitor camera assemblies and all monitor same area to be monitored;
(7) use at least one to place caliberating device in the area to be monitored, carry out the geometric parameter and the optical parametric of above-mentioned monitoring camera assembly and demarcate;
(8) use at least a warning device, link to each other, be used for when detecting crowd massing, reporting to the police with above-mentioned at least one computer.
7. multi-camera crowd-gathered message statistic method according to claim 6, it is characterized in that: above-mentioned crowd-gathered message statistic calculates and is specially: above-mentioned at least one computer analyzed the result's of above-mentioned human body target identification movement locus, and the decision condition of the crowd massing by prior formulation carries out the assessment of crowd massing degree.
8. multi-camera crowd-gathered message statistic method according to claim 7, it is characterized in that: the decision condition of above-mentioned crowd massing is the interior time of designated blocks that rests on above-mentioned area to be monitored more than 3 people simultaneously to surpass a scheduled time value, and this scheduled time value is preferably 15 seconds.
9. multi-camera crowd-gathered message statistic method according to claim 7, wherein, the movement locus Forecasting Methodology is a Ka lman movement locus Forecasting Methodology.
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