CN104243934A - Method and device for acquiring surveillance video and method and device for retrieving surveillance video - Google Patents

Method and device for acquiring surveillance video and method and device for retrieving surveillance video Download PDF

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Publication number
CN104243934A
CN104243934A CN201410521939.2A CN201410521939A CN104243934A CN 104243934 A CN104243934 A CN 104243934A CN 201410521939 A CN201410521939 A CN 201410521939A CN 104243934 A CN104243934 A CN 104243934A
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China
Prior art keywords
parameter
video
environmental parameter
environmental
environment
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CN201410521939.2A
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谭小军
潘天鸣
宁德军
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SMART CITY INFORMATION TECHNOLOGY Co Ltd
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SMART CITY INFORMATION TECHNOLOGY Co Ltd
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Priority to CN201410521939.2A priority Critical patent/CN104243934A/en
Publication of CN104243934A publication Critical patent/CN104243934A/en
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Abstract

The invention discloses a method and a device for acquiring surveillance video and a method and a device for retrieving the surveillance video, and belongs to the field of security. The method for retrieving the surveillance video includes receiving target events inputted by users; extracting environmental parameter sets according to the target events; retrieving video data from video databases according to the environmental parameter sets; searching for target events from the retrieved video data. The methods and the devices have the advantages that states of surveillance cameras can be controlled according to environmental parameter values in acquisition procedures, accordingly, the service lives of the cameras can be prolonged, and the quantities of invalid video data in the video databases can be greatly reduced, environmental parameters of the video data are stored in an association manner, and the follow-up video retrieval efficiency can be improved; the environmental parameters of the target events are used as keywords in retrieval procedures, accordingly, the surveillance video can be conveniently and quickly retrieved and invoked, and the video retrieval efficiency can be improved.

Description

A kind of monitor video acquisition method, search method and device
Technical field
The present invention relates to safety-security area, particularly relate to a kind of monitor video acquisition method, search method and device.
Background technology
Along with the increasing of social mobility, social man's group structure is day by day complicated, and the safety precaution of society also becomes the problem become increasingly conspicuous, and security protection video monitoring is the comparatively effective means of safety precaution at present just.Further, along with the propelling of smart city, monitoring camera spreads all over streets and lanes, the monitoring camera real-time recording video data of magnanimity, not only effectively contained some crime hidden danger, also provided the evidence of crime simultaneously, solving a case to the police brings great convenience.But the storage of these massive video data, retrieval and analysis usually can consume a large amount of time and manpower.
How in magnanimity monitor video data, to ignore a large amount of garbages, and quick-searching being to interested target, is a kind of important research topic of current video monitoring.Traditional fast video browser technology has two kinds, one is put soon, with the speed playback original video of several times of normal speed to tens times, search by manually watching video, this kind of mode wastes time and energy, and because be fast decoding, usually needs frame losing, easily cause omission, and efficiency comparison is low; Another kind is called video frequency abstract, is in automatic or automanual mode, by analyzing the structure of video and content, extracting significant part, and they combined in some way from original video.According to the standard browsed and navigate, a good video frequency abstract can make user obtain the maximum fault information of target video within a certain period of time, or within the shortest time, obtain sufficient information.But putting with these two kinds of methods of video frequency abstract is soon all with large losses useful information for cost, to reach the object of fast browsing, also can be referred to as to damage video frequency abstract, and be not suitable for the needs of criminal investigation and case detection.
Therefore, it is very short for effective time that video monitoring stores the data volume huge storage data that cause, and the retrieval of massive video data and analytical work exist the defect consuming a large amount of time and manpower.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of monitor video acquisition method, search method and device, huge to solve stored video data amount in prior art, and there is the technical problem consuming a large amount of time and manpower in the retrieval of massive video data and analytical work.
It is as follows that the present invention solves the problems of the technologies described above adopted technical scheme:
According to an aspect of the present invention, a kind of monitor video acquisition method provided comprises the following steps:
Obtain at least one environmental parameter value of the external environment in CCTV camera range of video;
Environmentally parameter value and corresponding pre-determined threshold control the state of CCTV camera, gather video data;
By the video data that collects and corresponding environmental parameter value association store in video database.
Preferably, environmentally parameter value comprises with the thresholding control CCTV camera unlatching preset or time-delay closing:
When the environmental parameter value of any one is greater than corresponding pre-determined threshold, controls CCTV camera and open;
When all environmental parameter values are less than or equal to corresponding pre-determined threshold, by power supply or the video processing unit of CCTV camera, control CCTV camera time-delay closing.
According to another aspect of the present invention, a kind of monitor video searching method provided comprises the following steps:
Receive the object event of user's input;
According to object event extraction environment parameter sets;
Environmentally parameter sets retrieve video data from video database;
Object event is found from the video data retrieved.
Preferably, when there is not the video data of environmental parameters all in simultaneously matched environment parameter sets, also comprise after the method:
Obtain the equivalent coefficient set between each environmental parameter in environmental parameter set;
Environmentally parameter sets and equivalent coefficient set calculate equivalent environment parameter sets;
According to equivalent environment parameter sets retrieve video data from video database, and find object event from the video data retrieved.
Preferably, environmentally parameter sets and equivalent coefficient calculating equivalent environment parameter sets comprise:
Environmental parameter in environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data according to whether there is coupling;
In calculating Equations of The Second Kind environmental parameter, each second environment parameter is about the equivalent parameters of any one first environment parameter in first kind environmental parameter;
The equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters is formed equivalent environment parameter sets jointly.
Preferably, calculate each second environment parameter in Equations of The Second Kind environmental parameter and, about the equivalent parameters of any one first environment parameter in first kind environmental parameter, comprise each the first environment parameter execution following steps for each second environment parameter and first kind environmental parameter thereof in Equations of The Second Kind environmental parameter:
The numerical value of all second environment parameters in traversal video database and the numerical value of first environment parameter;
According to α * (a1 i-b)+a2 j>=c calculates and meets the video data of the second environment parameter of the object event corresponding numerical value a1 of first environment parameter and the numerical value a2 of second environment parameter; Wherein, a1 irepresent i-th numerical value of first environment parameter; A2 jrepresent a jth numerical value of second environment parameter; A represents the equivalent coefficient between second environment parameter and first environment parameter, and b represents the numerical value of the second environment parameter of object event; C represents the threshold value of the second environment parameter of object event;
Using the numerical value a2 of the numerical value a1 of first environment parameter and second environment parameter jointly as the equivalent parameters of second environment parameter about first environment parameter.
According to a further aspect of the invention, a kind of monitor video harvester provided comprises with lower module:
Environmental parameter acquisition module, for obtaining at least one environmental parameter value of the external environment in CCTV camera range of video;
Video acquisition module, for environmentally parameter value and corresponding pre-determined threshold control the state of CCTV camera, collection video data;
Video storage modules, for the video data that will collect and corresponding environmental parameter value association store in video database.
According to a further aspect of the invention, a kind of monitor video indexing unit provided comprises:
Object event receiver module, receives the object event of input for user;
Environmental parameter extraction module, for according to object event extraction environment parameter sets;
First retrieval module, for environmentally parameter sets retrieve video data from video database;
Object event finds module, for finding object event from the video data retrieved.
Preferably, this device also comprises:
Equivalent coefficient acquisition module, for obtaining the equivalent coefficient set in environmental parameter set between each environmental parameter;
Equivalent environment parameter calculating module, for environmentally parameter sets and equivalent coefficient set calculate equivalent environment parameter sets;
Second retrieval module, for according to equivalent environment parameter sets retrieve video data from video database, and finds object event from the video data retrieved.
Preferably, equivalent environment parameter calculating module comprises:
Parameter divides submodule, and the environmental parameter in described environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data that whether there is coupling for basis;
Equivalent parameters calculating sub module, in calculating Equations of The Second Kind environmental parameter, each second environment parameter is about the equivalent parameters of any one first environment parameter in first kind environmental parameter;
Assignment submodule assignment submodule, for jointly forming equivalent environment parameter sets by the equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters.
System provided by the invention, method and apparatus, on the one hand, the state of CCTV camera is controlled by environmentally parameter value, camera is closed when not needing to gather video, save the operating time of video camera, extend the useful life of video camera, the invalid video data bulk in video database can be greatly reduced simultaneously, save a large amount of memory spaces, and improve follow-up video frequency searching efficiency by the environmental parameter of association preservation video data.On the other hand, by extracting the environmental parameter of object event, first retrieval meets the video data of environmental parameter, object event is found again in this video data, make the retrieval of video data and call more convenient, the efficiency of video frequency searching can be improved, tool high industrial utilization.
Accompanying drawing explanation
The structural representation of a kind of video monitoring system that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of video monitoring system that Fig. 2 provides for the preferred embodiment of the present invention;
The flow chart of a kind of monitor video acquisition method that Fig. 3 provides for the embodiment of the present invention;
The flow chart of a kind of monitor video searching method that Fig. 4 provides for the embodiment of the present invention;
The flow chart of a kind of monitor video searching method that Fig. 5 provides for the preferred embodiment of the present invention;
The flow chart of a kind of equivalent environment calculation method of parameters that Fig. 6 provides for the preferred embodiment of the present invention;
The flow chart of a kind of equivalent parameters computational methods that Fig. 7 provides for the preferred embodiment of the present invention;
The function structure chart of a kind of monitor video harvester that Fig. 8 provides for the embodiment of the present invention;
The function structure chart of a kind of monitor video indexing unit that Fig. 9 provides for the embodiment of the present invention;
The function structure chart of a kind of monitor video indexing unit that Figure 10 provides for the preferred embodiment of the present invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
As shown in Figure 1, a kind of video monitoring system that the embodiment of the present invention provides comprises CCTV camera 10, environment detection unit 20, video acquisition control unit 30 and video database 40, wherein:
CCTV camera 10, for gathering video data.
Environment detection unit 20, for detecting the environmental parameter value of the external environment in CCTV camera range of video, and sends to video acquisition control unit 30.
Video acquisition control unit 30, the environmental parameter value detected for environmentally probe unit 20 controls the state of CCTV camera 10, and the environmental parameter value association store of correspondence that the video data collected by CCTV camera 10 and environment detection unit 20 detect is in video database 40.
Video database 40, for stored video data.
Specifically, environment detection unit 20 comprises one or more transducer, is connected respectively with video acquisition control unit 30, by the environmental parameter value of the external environment in CCTV camera 10 range of video that detects, sends to video acquisition control unit 30.Transducer includes but not limited to that the combination in any of at least two kinds in sound transducer, optical sensor, infrared sensor, temperature sensor and vibrating sensor forms.Environmental parameter corresponding audio parameter, light intensity parameter, infrared waves parameter, temperature parameter and the vibration parameters respectively of its detection.
Transducer, the CCTV camera 10 of video acquisition control unit 30 difference JA(junction ambient) probe unit 20 are connected with video database 40, the environmental parameter value that environmentally probe unit 20 detects controls the state of CCTV camera 10, thus controls whether gather video data.Video acquisition control unit 30 is preset with standard environment data, i.e. pre-determined threshold, corresponding with environmental parameter, pre-determined threshold comprises: at least two kinds of combination in any in sound thresholding, light intensity thresholding, infrared waves thresholding, temperature threshold and/or vibration thresholding.Wherein, pre-determined threshold is the mean value of the environmental parameter value when referring to the environmental parameter value under noiseless condition and having people/vehicle/animal to enter.The environmental parameter that environment detection unit 20 exports by video acquisition control unit 30 and pre-determined threshold contrast, and obtain label; The video data gathered is classified according to label, and by the video data association store of this label and correspondence in video database 40.
Refer to a kind of preferred embodiment that Fig. 2 provides, CCTV camera 10 comprises camera 101, video processing unit 102 and power supply 103, and video processing unit 102 is connected with camera 101 and video acquisition control unit 30 respectively; Camera 101 is connected with video processing unit 102.Power supply 103 is respectively environment detection unit 20, video acquisition control unit 30, camera 101 and video processing unit 102 and provides power supply.
Environment detection unit 20 comprises 3 transducers, sound transducer 201, optical sensor 202 and infrared sensor 203 respectively, detect the environmental parameter of the external environment in camera 101 range of video respectively: sound transducer 201 detects the sound wave of external environment, and sound wave is converted into acoustic wave parameter (signal of telecommunication); Optical sensor 202 detects the intensity of illumination of external environment, and intensity of illumination is converted into light intensity parameter (signal of telecommunication); Infrared sensor 203 detects the infrared waves of external environment, and infrared waves is converted into infrared waves parameter (signal of telecommunication).The acoustic wave parameter detected, light intensity parameter and infrared waves parameter are output to video acquisition control unit 30 by environment detection unit 20.
In the present embodiment, pre-determined threshold comprises acoustic wave parameter, light intensity parameter and infrared waves parameter.The acoustic wave parameter that environment detection unit 20 exports by video acquisition control unit 30, light intensity parameter and infrared waves parameter and thresholding compare, and are closed according to comparative result and are opened control by video processing unit 102 pairs of cameras 101.When in acoustic wave parameter, light intensity parameter and infrared waves parameter, any one parameter is greater than thresholding, video acquisition control unit 30 sends instruction to video processing unit 102, opens camera 101; After camera 101 is unlocked, gathers the video data in range of video, and the video data of collection is uploaded to video processing unit 102; Video processing unit 102 pairs of video datas process, and comprise light filling, image procossing, signal conversion etc., and the video data handled well is passed to video acquisition control unit 30.Video acquisition control unit 30 uses associated treatment algorithm to carry out calculating according to acoustic wave parameter, light intensity parameter and infrared waves parameter during this unlatching camera 101 and contrast_environment thresholding obtains label, and is stored to together with label in video database 40 by the video data of collection.When in acoustic wave parameter, light intensity parameter and infrared waves parameter, all parameters are all less than or equal to thresholding, namely when external environment is in normal condition, video acquisition control unit 30 sends instruction to video processing unit 102, allows camera 101 time delay close for 30 seconds, does not carry out the collection of video data.Certainly, video acquisition control unit 30 also can control the opening and closing of camera 101 by power supply 103.Video processing unit 102 and the power supply 103 of video acquisition control unit 30 and CCTV camera 10 are connected, and video acquisition control unit 30, by controlling the channel status of power supply 103, controls the opening and closing of camera 101; The video data that camera 101 collects remains and be uploaded to video acquisition control unit 30 again after video processing unit 102.
In sum, the video monitoring system of the embodiment of the present invention, by increasing the environmental parameter value of the external environment in environment detection unit detection CCTV camera range of video, and environmentally parameter value controls the state of CCTV camera, camera is closed when not needing to gather video, save the operating time of video camera, extend the useful life of video camera, the video data quantity in video database can be greatly reduced simultaneously, save a large amount of memory spaces, and the environmental parameter of video data is preserved by association, follow-up video frequency searching efficiency can be improved.
Embodiment two
As shown in Figure 3, a kind of monitor video acquisition method that the embodiment of the present invention provides, comprises the following steps:
At least one environmental parameter value of external environment in S101, acquisition CCTV camera range of video.
In this step, environmental parameter includes but not limited to: two or more combinations arbitrarily in audio parameter, light intensity parameter, infrared waves parameter, temperature parameter or vibration parameters.Specifically by the external environment condition in the real-time monitoring camera range of video of environmental parameter within the scope of detection camera video, thus can judge whether occurred change in range of video, such as, whether have people, vehicle or animal to appear at range of video interior etc.Generally come the detection of the environmental parameter within the scope of camera video by one or more transducer.
The pre-determined threshold of S102, environmentally parameter value and correspondence controls the state of CCTV camera, gathers video data.
In this step, carry out associated treatment according to the environmental parameter in CCTV camera range of video and thresholding, control the state of CCTV camera: when the environmental parameter value of any one is greater than corresponding pre-determined threshold, control monitoring camera and open; When all environmental parameter values are less than or equal to corresponding pre-determined threshold, by power supply or the video processing unit of CCTV camera, control monitoring camera time-delay closing.Namely using thresholding as reference, environmental parameter within the scope of the camera video obtained with detection is compared: if all environmental parameters detected are less than or equal to thresholding, external environment within the scope of now camera video is so described, and all are normal, there is not any change, this situation, unnecessary use camera to external world environment gathers video data, so, with regard to time-delay closing camera, general employing time delay closes camera in 30 seconds again, then step S101 is returned in redirect, again detects the environmental parameter in range of video.If all environmental parameters detected are greater than thresholding, that just means that change has appearred in external environment now, likely enter people in range of video, also be likely occurred vehicle in range of video, at this moment just the video data of environment is to external world needed to gather, so now open camera, and jump to step S103.
Wherein, because CCTV camera comprises camera, video processing unit and power supply, so, can be controlled by two kinds of modes the opening and closing of camera: one is controlled by power supply, and one is controlled by video processing unit.Corresponding with environmental parameter, corresponding pre-determined threshold comprises: sound thresholding, light intensity thresholding, infrared waves thresholding, temperature threshold and/or vibration thresholding, wherein, the environmental parameter of thresholding when referring to the environmental parameter value of (not occurring vehicle, human or animal etc. in range of video) under noiseless condition and having people/vehicle/animal to enter presets, averaging as thresholding of the environmental parameter such as to the environmental parameter under noiseless condition and when occurring that personnel enter.
S103, by the environmental parameter value association store of the video data that collects and correspondence in video database.
Due to external environment there occurs change, monitoring camera is opened, and CCTV camera starts to carry out video data to the external environment in range of video and gathers, and the data that monitoring camera is collected with together with associate and be saved in video database.Video data just gathers after external environment changes, and according to the change that external environment occurs, video data is carried out classification preservation by environmental parameter, and step S101 is returned in redirect, again detects the external environment in range of video.
The monitor video acquisition method of the present embodiment, the state of CCTV camera is controlled by environmentally parameter value, camera is closed when not needing to gather video, save the operating time of video camera, extend the useful life of video camera, the video data quantity in video database can be greatly reduced simultaneously, saved a large amount of memory spaces, and preserved the environmental parameter of video data by association, follow-up video frequency searching efficiency can be improved.
Embodiment three
As shown in Figure 4, a kind of monitor video searching method that the embodiment of the present invention provides comprises:
The object event of S201, reception user input.
Object event is concrete event, such as get into an accident, occur earthquake, breaking out of fire etc., when there are these events, the numerical value of the environmental parameters such as the oscillation intensity of its correspondence, intensity of sound, infrared waves parameter and light intensity parameter can be different.Certain the present invention is not limited in these events.
S202, according to object event extraction environment parameter sets.
Particularly, when different object events occurs, the environment around it is also different, according to different object events, extracts the numerical value of environmental parameter when this object event occurs.Such as environmental parameter set comprises the combination in any in audio parameter, infrared waves parameter, vibration parameters or light intensity parameter.
S203, environmentally parameter sets be retrieve video data from video database.
Particularly, the video data in video database carries out Separate Storage according to environmental parameter, therefore can retrieve video database using the environmental parameter in environmental parameter set as keyword.Such as, environmental parameter set is: intensity of sound (audio parameter) >=La, and oscillation intensity (vibration parameters) >=Eva is retrieval type.
S204, from the video data retrieved, find object event.
The monitor video searching method of the present embodiment, by extracting the environmental parameter set of object event, environmentally parameter sets carries out retrieving the video data found and meet environmental parameter set in video database, then finds object event from the video data retrieved; Make the retrieval of video data and call more convenient, decreasing workload during retrieval, improve the efficiency of video frequency searching, tool high industrial utilization.
Embodiment four
As shown in Figure 5, a kind of monitor video searching method that the preferred embodiment of the present invention provides comprises:
The object event of S301, reception input.
S302, according to the equivalent coefficient set between object event extraction environment parameter sets and Qi Ge environmental parameter.
Due to the difference of its object event, the equivalent coefficient between its multiple environmental parameter is also different.Such as, event A vehicle glass is smashed to be scratched with event B vehicle, in two events, IR parameters is the first parameter, and the process occurred in event A can produce larger sound and vibration, so the equivalent coefficient of its audio parameter and vibration parameters is much larger than event B.
S303, environmentally parameter sets be retrieve video data from video database.
S304, judge whether to exist the video data of all environmental parameters in simultaneously matched environment parameter sets, if existed, then go to step S307, if there is no, then perform step S305.
If there is the video data mating all environmental parameters simultaneously, then retrieve all video datas meeting multiple environmental parameter, find object event.In the present embodiment, environmental parameter is: intensity of sound >=La, oscillation intensity >=Eva, in video database, so just carry out the retrieval of intensity of sound and oscillation intensity, if exist in video database and meet intensity of sound >=La and the video data of oscillation intensity >=Eva, so to meeting intensity of sound >=La and all video datas of oscillation intensity >=Eva are retrieved, find object event.If there is no mate the video data of all environmental parameters simultaneously, in the present embodiment, suppose that the environmental parameter of intensity of sound >=La is satisfied, the environmental parameter of oscillation intensity >=Eva is ungratified, then jump to step S305.
S305, environmentally set of parameter values and equivalent coefficient set calculate equivalent environment parameter sets.
In the middle of environmental parameter set, the environmental parameter of some can search out match with it (first kind environmental parameter) in video database, so can not process; And the environmental parameter of another part does not match with it (Equations of The Second Kind environmental parameter) in video database, it matches with it owing to cannot retrieve in video database, so the calculating carrying out equivalent parameters is needed to Equations of The Second Kind environmental parameter, under normal circumstances, be the calculating environmental parameter in Equations of The Second Kind environmental parameter being carried out equivalent parameters about any one environmental parameter in multiple first kind environmental parameter.Therefore, equivalent environment parameter just comprises one or more first environment parameter, and the equivalent parameters of one or more second environment parameter.
Refer to Fig. 6, this step S305 comprises further:
Environmental parameter in environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data whether S3051, basis exist coupling.Wherein, first kind environmental parameter is there is the video data mated with it in video database, and Equations of The Second Kind environmental parameter is there is not the video data mated with it in video database.Specifically, for first kind environmental parameter, match with it because it can find in video database, so can not process; For Equations of The Second Kind environmental parameter, it matches with it owing to cannot retrieve in video database, so the calculating carrying out equivalent parameters is needed to Equations of The Second Kind environmental parameter, under normal circumstances, be calculating Equations of The Second Kind environmental parameter being carried out equivalent parameters about any one in multiple first kind environmental parameter.Therefore, equivalent environment parameter just comprises one or more first environment parameter, and the equivalent parameters of one or more second environment parameter.
In S3052, calculating Equations of The Second Kind environmental parameter, each second environment parameter is about the equivalent parameters of any one first environment parameter in first kind environmental parameter.
Refer to Fig. 7, each first environment parameter that this step S3052 comprises further for each second environment parameter and first kind environmental parameter thereof in Equations of The Second Kind environmental parameter performs following steps:
The numerical value of all second environment parameters in S30521, traversal video database and the numerical value of first environment parameter;
S30522, calculate and meet the video data of the second environment parameter of the object event corresponding numerical value a1 of first environment parameter and the numerical value a2 of second environment parameter;
Specifically can according to α * (a1 i-b)+a2 j>=c formula calculates, wherein, and a1 irepresent i-th numerical value of first environment parameter; A2 jrepresent a jth numerical value of second environment parameter; A represents the equivalent coefficient between second environment parameter and first environment parameter, and b represents the numerical value of the second environment parameter of object event; C represents the threshold value of the second environment parameter of object event;
S30523, using the numerical value a2 of the numerical value a1 of first environment parameter and second environment parameter jointly as the equivalent parameters of second environment parameter about first environment parameter.
For example, for environmental parameter: intensity of sound >=La, oscillation intensity >=Eva, and the environmental parameter of intensity of sound >=La meet, the environmental parameter of oscillation intensity >=Eva does not meet for example, asks for the equivalent parameters of oscillation intensity.Because intensity of sound >=La can retrieve the video data matched in video database, so intensity of sound is first kind environmental parameter; And oscillation intensity >=Eva cannot retrieve the video data matched in video database, so oscillation intensity is exactly Equations of The Second Kind environmental parameter; Equations of The Second Kind environmental parameter " oscillation intensity " is about being calculated as follows of equivalent parameters of first kind environmental parameter " intensity of sound ":
First, all numerical value of first kind environmental parameter " intensity of sound " and the numerical value of Equations of The Second Kind environmental parameter " oscillation intensity " in video database is traveled through; Then, according to α * (a1 i-b)+a2 jcalculate, wherein, a1 irepresent i-th numerical value of the first kind environmental parameter " intensity of sound " in video database; A2 jrepresent a jth numerical value of Equations of The Second Kind environmental parameter " oscillation intensity " in video database; B represents the numerical value of the Equations of The Second Kind environmental parameter " oscillation intensity " of object event, i.e. oscillation intensity >=Eva; α represents the equivalent coefficient between Equations of The Second Kind environmental parameter " oscillation intensity " and first kind environmental parameter " intensity of sound ".Find result of calculation and meet the numerical value a1 of the first kind environmental parameter " intensity of sound " of the video database of the Equations of The Second Kind environmental parameter " oscillation intensity " of object event and the numerical value a2 of Equations of The Second Kind environmental parameter " oscillation intensity ", namely meet α * (a1-b1)+a2 >=Eva; Finally, using first kind environmental parameter a1 and Equations of The Second Kind environmental parameter a2 jointly as the equivalent parameters of Equations of The Second Kind environmental parameter, i.e. intensity of sound >=a1, oscillation intensity >=a2 are the equivalent parameterss of oscillation intensity >=Eva.Then equivalent environment parameter is: intensity of sound >=La, intensity of sound >=a1, oscillation intensity >=a2.
Certainly, the present invention is not limited in the situation only having two environmental parameters, when first kind environmental parameter and Equations of The Second Kind environmental parameter have multiple, the Equations of The Second Kind environmental parameter of the video data matched cannot be retrieved for one in video database, only need to calculate it about the equivalent parameters of any one in multiple first kind environmental parameter.Finally using multiple first kind environmental parameter together with the equivalent parameters of multiple Equations of The Second Kind environmental parameter as equivalent environment parameter.
S3053, the equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters is formed equivalent environment parameter sets jointly.
S306, according to equivalent environment parameter sets retrieve video data from video database.
S307, from the video data retrieved, find object event.
The monitor video searching method of the present embodiment, by extracting the equivalent coefficient between the environmental parameter set of object event and each environmental parameter thereof, environmentally parameter carries out retrieving the video data found and meet environmental parameter in video database, then finds object event in this video data; If the video data of coupling cannot be retrieved in video database according to environmental parameter set, so the environmental parameter of object event is carried out to the calculating of equivalent environment parameter, in video database, find the video data matched according to equivalent environment parameter sets, then find object event in the video data of coupling.Make the retrieval of video data and call more convenient, decreasing workload during retrieval, adding effective warning, alleviating person works's intensity, improve the efficiency of video frequency searching, tool high industrial utilization.
Embodiment five
As shown in Figure 8, a kind of monitor video harvester that the embodiment of the present invention provides comprises with lower module:
Environmental parameter acquisition module 110, for obtaining the environmental parameter value of the external environment in CCTV camera range of video.
Wherein, environmental parameter includes but not limited to: two or more combinations arbitrarily in audio parameter, light intensity parameter, infrared waves parameter, temperature parameter or vibration parameters.Specifically by the external environment condition in the real-time monitoring camera range of video of environmental parameter within the scope of detection camera video, thus can judge whether occurred change in range of video, such as, whether have people, vehicle or animal to appear at range of video interior etc.Generally come the detection of the environmental parameter within the scope of camera video by one or more transducer.
Video acquisition module 120, for environmentally parameter value and corresponding pre-determined threshold control the state of CCTV camera, collection video data;
Particularly, corresponding with environmental parameter, corresponding pre-determined threshold comprises: sound thresholding, light intensity thresholding, infrared waves thresholding, temperature threshold and/or vibration thresholding, wherein, the environmental parameter of thresholding when referring to the environmental parameter value of (not occurring vehicle, human or animal etc. in range of video) under noiseless condition and having people/vehicle/animal to enter presets, averaging as thresholding of the environmental parameter such as to the environmental parameter under noiseless condition and when occurring that personnel enter.
Video acquisition module 120 carries out associated treatment according to the environmental parameter in CCTV camera range of video and thresholding, control the state of CCTV camera, gather video data: when the environmental parameter value of any one is greater than corresponding pre-determined threshold, control monitoring camera and open; When all environmental parameter values are less than or equal to corresponding pre-determined threshold, by power supply or the video processing unit of CCTV camera, control monitoring camera time-delay closing.Namely using thresholding as reference, environmental parameter within the scope of the camera video obtained with detection is compared: if all environmental parameters detected are less than or equal to thresholding, external environment within the scope of now camera video is so described, and all are normal, there is not any change, this situation, unnecessary use camera to external world environment gathers video data, so, with regard to time-delay closing camera, general employing time delay closes camera in 30 seconds again, then again detects the environmental parameter in range of video; If all environmental parameters detected are greater than thresholding, that just means that change has appearred in external environment now, likely enter people in range of video, also be likely occurred vehicle in range of video, at this moment just the video data of environment is to external world needed to gather, so now open camera collection video.Wherein, can be controlled by two kinds of modes the opening and closing of camera: one is controlled by power supply, and one is controlled by video processing unit.
Video storage modules 130, for the video data that will collect and corresponding environmental parameter value association store in video database.
Due to external environment there occurs change, monitoring camera is opened, and CCTV camera starts to carry out video data to the external environment in range of video and gathers, and the data that monitoring camera is collected with together with associate and be saved in video database.Video data just gathers after external environment changes, and according to the change that external environment occurs, video data is carried out classification preservation by environmental parameter, and again detects the external environment in range of video.
The monitor video harvester of the present embodiment, the state of CCTV camera is controlled by environmentally parameter value, camera is closed when not needing to gather video, save the operating time of video camera, extend the useful life of video camera, the video data quantity in video database can be greatly reduced simultaneously, saved a large amount of memory spaces, and preserved the environmental parameter of video data by association, follow-up video frequency searching efficiency can be improved.
Embodiment six
As shown in Figure 9, a kind of monitor video indexing unit that the embodiment of the present invention provides comprises object event receiver module 210, environmental parameter extraction module 220, first retrieval module 230 and object event and finds module 240, wherein:
Object event receiver module 210, for receiving the object event of user's input.
Object event is the time of concrete generation, such as get into an accident, occur earthquake, breaking out of fire etc., the present invention is not limited to this certainly.
Environmental parameter extraction module 220, for according to object event extraction environment parameter sets.
Particularly, when different object events occurs, the environment around it is also different, according to different object events, extracts the numerical value of environmental parameter when this object event occurs.Environmental parameter set comprises audio parameter, infrared waves parameter, vibration parameters or light intensity parameter.Further, due to the difference of its object event, the equivalent coefficient between its multiple environmental parameter is also different.
First retrieval module 230, for environmentally parameter sets retrieve video data from video database.
Particularly, the video data in video database carries out Separate Storage according to environmental parameter, therefore can retrieve video database using environmental parameter as keyword.Such as, environmental parameter is: intensity of sound (audio parameter) >=La, and oscillation intensity (vibration parameters) >=Eva is retrieval type.
Object event finds module 240, for finding object event in the video data from retrieval.
The monitor video indexing unit of the present embodiment, by extracting the environmental parameter set of object event, environmentally parameter sets carries out retrieving the video data found and meet environmental parameter set in video database, then finds object event from the video data retrieved; Make the retrieval of video data and call more convenient, decreasing workload during retrieval, improve the efficiency of video frequency searching, tool high industrial utilization.
Embodiment seven
As shown in Figure 10, a kind of monitor video indexing unit that the preferred embodiment of the present invention provides comprises object event receiver module 310, environmental parameter extraction module 320, first retrieval module 330, judge module 340, equivalent coefficient acquisition module 350, equivalent environment parameter calculating module 360, first retrieval module 370 and object event and finds module 380, wherein:
Object event receiver module 310, for receiving the object event of user's input.
Environmental parameter extraction module 320, for according to object event extraction environment parameter sets.
First retrieval module 330, for environmentally parameter sets retrieve video data from video database.Judge module 340, for judging whether to exist the video data mating all environmental parameters simultaneously, if existed, then notification target event finds module 380, if there is no, then notifies equivalent environment parameter calculating module 360.
Particularly, if there is the video data mating all environmental parameters simultaneously, then retrieve all video datas meeting multiple environmental parameter, find object event.In the present embodiment, environmental parameter is: intensity of sound >=La, oscillation intensity >=Eva, in video database, so just carry out the retrieval of intensity of sound and oscillation intensity, if exist in video database and meet intensity of sound >=La and the video data of oscillation intensity >=Eva, so to meeting intensity of sound >=La and all video datas of oscillation intensity >=Eva are retrieved, find object event.If there is no mate the video data of all environmental parameters simultaneously, in the present embodiment, suppose that the environmental parameter of intensity of sound >=La is satisfied, the environmental parameter of oscillation intensity >=Eva is ungratified, then notify equivalent environment parameter calculating module 360.
Equivalent coefficient acquisition module 350, for obtaining the equivalent coefficient set in environmental parameter set between each environmental parameter.
Equivalent environment parameter calculating module 360, for when there is not the video data of all environmental parameters in simultaneously matched environment parameter sets, environmentally parameter sets and equivalent coefficient set calculate equivalent environment parameter.
Second retrieval module 370, for according to equivalent environment parameter sets retrieve video data from video database;
Object event finds module 380, for finding object event from the video data retrieved.
As a kind of preferred version of the present embodiment, equivalent environment parameter calculating module 360 comprises parameter and divides submodule 3601, equivalent parameters calculating sub module 3602 and assignment submodule 3603, wherein:
Parameter divides submodule 3601, and the environmental parameter in described environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data that whether there is coupling for basis.
Wherein, first kind environmental parameter is there is the video data mated with it in video database, and Equations of The Second Kind environmental parameter is there is not the video data mated with it in video database.For first kind environmental parameter, match with it because it can find in video database, so can not process; For Equations of The Second Kind environmental parameter, match with it because it cannot retrieve in video database, so the calculating carrying out equivalent parameters is needed to Equations of The Second Kind environmental parameter.
Equivalent parameters calculating sub module 3602, in calculating Equations of The Second Kind environmental parameter, each second environment parameter is about the equivalent parameters of any one first environment parameter in first kind environmental parameter.
Particularly, equivalent parameters calculating sub module 3602 is specifically for performing following operation for each first environment parameter of each second environment parameter and first kind environmental parameter thereof in Equations of The Second Kind environmental parameter: the numerical value of all second environment parameters in traversal video database and the numerical value of first environment parameter; Calculate and meet the video data of the second environment parameter of the object event corresponding numerical value a1 of first environment parameter and the numerical value a2 of second environment parameter; Using the numerical value a2 of the numerical value a1 of first environment parameter and second environment parameter jointly as the equivalent parameters of second environment parameter about first environment parameter.Specifically can according to α * (a1 i-b)+a2 j>=c formula calculates, wherein, and a1 irepresent i-th numerical value of first environment parameter; A2 jrepresent a jth numerical value of second environment parameter; A represents the equivalent coefficient between second environment parameter and first environment parameter, and b represents the numerical value of the second environment parameter of object event; C represents the threshold value of the second environment parameter of object event.
Assignment submodule 3603, for jointly forming equivalent environment parameter sets by the equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters.
It should be noted that, the technical scheme in the method for above-described embodiment three and embodiment four is same corresponding applicable in the present embodiment, no longer repeats here.
The monitor video indexing unit of the present embodiment, by extracting the equivalent coefficient between the numerical value of the environmental parameter of object event and multiple environmental parameter, environmentally parameter carries out retrieving the video data found and meet environmental parameter in video database, then finds object event in this video data; If the video data of coupling cannot be retrieved in video database according to environmental parameter, so the environmental parameter of object event is carried out to the calculating of equivalent environment parameter, in video database, find the video data matched according to equivalent environment parameter, then find object event in the video data of coupling.Make the retrieval of video data and call more convenient, decreasing workload during retrieval, adding effective warning, alleviating person works's intensity, improve the efficiency of video frequency searching, tool high industrial utilization.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can control to be correlated with by program completes, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
Above with reference to the accompanying drawings of the preferred embodiments of the present invention, not thereby limit to interest field of the present invention.Those skilled in the art do not depart from the scope and spirit of the present invention, and multiple flexible program can be had to realize the present invention, and the feature such as an embodiment can be used for another embodiment and obtains another embodiment.All use do within technical conceive of the present invention any amendment, equivalently replace and improve, all should within interest field of the present invention.

Claims (10)

1. a monitor video acquisition method, is characterized in that, said method comprising the steps of:
Obtain at least one environmental parameter value of the external environment in described CCTV camera range of video;
Control the state of described CCTV camera according to described environmental parameter value and corresponding pre-determined threshold, gather video data;
By in the video data that collects and corresponding environmental parameter value association store to described video database.
2. monitor video acquisition method according to claim 1, is characterized in that, according to described environmental parameter value and preset thresholding control described CCTV camera open or time-delay closing comprise:
When the environmental parameter value described in any one is greater than corresponding pre-determined threshold, controls described CCTV camera and open;
When all described environmental parameter values are less than or equal to corresponding pre-determined threshold, by power supply or the video processing unit of described CCTV camera, control described CCTV camera time-delay closing.
3. a monitor video searching method, is characterized in that, described method comprises:
Receive the object event of user's input;
According to described object event extraction environment parameter sets;
According to described environmental parameter set retrieve video data from video database;
Described object event is found from the video data retrieved.
4. monitor video searching method according to claim 3, is characterized in that, when there is not the video data mating environmental parameters all in described environmental parameter set simultaneously, also comprises after described method:
Obtain the equivalent coefficient set between each environmental parameter in described environmental parameter set;
Equivalent environment parameter sets is calculated according to described environmental parameter set and described equivalent coefficient set;
According to described equivalent environment parameter sets retrieve video data from video database, and find described object event from the video data retrieved.
5. monitor video searching method according to claim 4, is characterized in that, calculates equivalent environment parameter sets comprise according to described environmental parameter set and described equivalent coefficient:
Environmental parameter in described environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data according to whether there is coupling;
To calculate in described Equations of The Second Kind environmental parameter each second environment parameter about the equivalent parameters of any one first environment parameter in first kind environmental parameter.
6. the equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters is formed equivalent environment parameter sets jointly.Monitor video searching method according to claim 5, it is characterized in that, calculate each second environment parameter in described Equations of The Second Kind environmental parameter and, about the equivalent parameters of any one first environment parameter in first kind environmental parameter, comprise each the first environment parameter execution following steps for each second environment parameter and first kind environmental parameter thereof in described Equations of The Second Kind environmental parameter:
Travel through the numerical value of all second environment parameters in described video database and the numerical value of first environment parameter;
According to α * (a1 i-b)+a2 j>=c calculates and meets the video data of the second environment parameter of the described object event corresponding numerical value a1 of first environment parameter and the numerical value a2 of second environment parameter; Wherein, a1 irepresent i-th numerical value of first environment parameter; A2 jrepresent a jth numerical value of second environment parameter; A represents the equivalent coefficient between second environment parameter and first environment parameter, and b represents the numerical value of the second environment parameter of described object event; C represents the threshold value of the second environment parameter of described object event;
Using the numerical value a2 of the numerical value a1 of first environment parameter and second environment parameter jointly as the equivalent parameters of second environment parameter about first environment parameter.
7. a monitor video harvester, is characterized in that, described device comprises with lower module:
Environmental parameter acquisition module, for obtaining at least one environmental parameter value of the external environment in described CCTV camera range of video;
Video acquisition module, for controlling the state of described CCTV camera according to described environmental parameter value and corresponding pre-determined threshold, gathers video data;
Video storage modules, in the video data that will collect and corresponding environmental parameter value association store to described video database.
8. a monitor video indexing unit, is characterized in that, described device comprises:
Object event receiver module, receives the object event of input for user;
Environmental parameter extraction module, for according to described object event extraction environment parameter sets;
First retrieval module, for according to described environmental parameter set retrieve video data from video database;
Object event finds module, for finding described object event from the video data retrieved.
9. monitor video indexing unit according to claim 8, is characterized in that, described device also comprises:
Equivalent coefficient acquisition module, for obtaining the equivalent coefficient set in described environmental parameter set between each environmental parameter;
Equivalent environment parameter calculating module, for calculating equivalent environment parameter sets according to described environmental parameter set and described equivalent coefficient set;
Second retrieval module, for according to described equivalent environment parameter sets retrieve video data from video database, and finds described object event from the video data retrieved.
10. monitor video indexing unit according to claim 9, is characterized in that, equivalent environment parameter calculating module comprises:
Parameter divides submodule, and the environmental parameter in described environmental parameter set is divided into first kind environmental parameter and Equations of The Second Kind environmental parameter by the video data according to whether there is coupling;
Equivalent parameters calculating sub module, to calculate in described Equations of The Second Kind environmental parameter each second environment parameter about the equivalent parameters of any one first environment parameter in first kind environmental parameter;
Assignment submodule assignment submodule, for jointly forming equivalent environment parameter sets by the equivalent parameters of all first kind environmental parameters and all Equations of The Second Kind environmental parameters.
CN201410521939.2A 2014-09-30 2014-09-30 Method and device for acquiring surveillance video and method and device for retrieving surveillance video Pending CN104243934A (en)

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