CN104270608A - Intelligent video player and playing method thereof - Google Patents
Intelligent video player and playing method thereof Download PDFInfo
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- CN104270608A CN104270608A CN201410510456.2A CN201410510456A CN104270608A CN 104270608 A CN104270608 A CN 104270608A CN 201410510456 A CN201410510456 A CN 201410510456A CN 104270608 A CN104270608 A CN 104270608A
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Abstract
The invention belongs to the field of video playing, and provides an intelligent video player and a playing method of the intelligent video player. The video player comprises a video decoding module, a target detecting module, a play control module and a video displaying module, wherein the video decoding module, the target detecting module, the play control module and the video displaying module are sequentially connected. The video decoding module is used for receiving an input video and decoding the input video; the target detecting module is used for detecting a moving target crossing a warning line or getting in or out of a warning area in the video; the play control module is used for controlling play speed according to a detection result of the target detecting module, the video is played at the normal speed when the moving target crossing the warning line or getting in or out of the warning area is detected, and otherwise the video is played fast; the video play displaying module is used for displaying the video playing content according to the play speed controlled by the play control module. The video player has the functions of moving target recognition, detection and automatic play control and is suitable for fast positioning useful video sections when a video investigator investigates the video.
Description
Technical field
The invention belongs to video player field, particularly relate to a kind of intelligent video player and player method thereof.
Background technology
In recent years, country constantly accelerates the construction of safe city and smart city, in order to ensure that the people can have a good public security environment, increasing video monitoring camera has been had to be arranged on each main discrepancy crossing, personnel concentrate or flow of personnel amount is larger place, camera can carry out real-time monitoring to these places, and preserve in the transfer of data of video monitoring to server, after having case to occur, video investigation personnel can recall video at any time, and analyze video.
Along with popularizing of video monitoring camera, using video monitoring data to carry out investigations to case becomes a kind of important means of public security officer.But the number of videos of preserving on the server is very large, the technical way adopted at present, still manually to watch the mode of video, needs cost more time and manpower could find useful video segment or clue from multitude of video.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of intelligent video player and player method thereof, to solve the problem that prior art needs to spend plenty of time and manpower to carry out video segment and searches.
The embodiment of the present invention is achieved in that a kind of intelligent video player, comprises the Video decoding module, module of target detection, transmit control module and the video display module that connect successively;
Described Video decoding module receives the video of input and decodes;
Described module of target detection is for detecting in video the moving target crossed warning line or come in and go out security area;
Described transmit control module controls broadcasting speed according to the testing result of described module of target detection, plays with normal speed when the moving target crossed warning line or come in and go out security area being detected, otherwise quick displaying video;
Described video playback display module, according to the broadcasting speed that described transmit control module controls, the content that display video is play.
A player method for video player, said method comprising the steps of:
Step 401, calls Video decoding module decoded video file, output video frame;
Step 402, rendering algorithm rule in video requency frame data;
Whether step 403, call in intelligent retrieval Algorithm Analysis module detection current video frame and have moving target to cross warning line or warning region event generation of coming in and going out, if any then upgrading moving target time of occurrence sequence;
Step 404, judges whether current play time belongs to the time series of described moving target appearance, and if it is controlling current broadcasting speed is normal speed forward, otherwise with decoding speed frame of display video, the displaying time of record present frame.
The beneficial effect of a kind of intelligent video player that the embodiment of the present invention provides comprises:
There is the function of motion estimate, detection and automatic Play Control, realize carrying out cross-line and trans-regional detection to the moving target in video, automatically broadcasting speed is controlled according to testing result, be applicable to video investigation personnel quick position when carrying out video investigation and, to useful video-frequency band, reduce the time of video investigation.Can also to the moving target striding across warning line and warning region automatic generating snapshot, be convenient to video investigation personnel fast finding suspected target.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of intelligent video player provided by the invention;
Fig. 2 is the flow chart that module of target detection that the embodiment of the present invention provides carries out the process of object detection process detection;
Fig. 3 is the flow chart that order moving target that the embodiment of the present invention provides crosses the process that warning line detects;
Fig. 4 is the flow chart of the process of the order moving target discrepancy warning region detection that the embodiment of the present invention provides;
Fig. 5 is the flow chart of the player method of a kind of intelligent video player that the embodiment of the present invention provides;
Fig. 6 is the flow chart of the using method of a kind of intelligent video player that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage 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.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
Be illustrated in figure 1 the structural representation of intelligent video player provided by the invention, as shown in Figure 1, this video player comprises:
The Video decoding module connected successively, module of target detection, transmit control module and video display module.
Video decoding module receives the video of input and decodes.
This Video decoding module supports the video decode of various major video form.
Module of target detection is for detecting in video the moving target crossed warning line or come in and go out security area.
Transmit control module controls broadcasting speed according to the testing result of module of target detection, plays with normal speed when the moving target crossed warning line or come in and go out security area being detected, otherwise quick displaying video.
Video playback display module, according to the broadcasting speed that transmit control module controls, the content that display video is play.
A kind of intelligent video player provided by the invention, there is the function of motion estimate, detection and automatic Play Control, realize carrying out cross-line and trans-regional detection to the moving target in video, automatically broadcasting speed is controlled according to testing result, be applicable to video investigation personnel quick position when carrying out video investigation and, to useful video-frequency band, reduce the time of video investigation.
Embodiment one
Embodiment one provided by the invention is a kind of embodiment of intelligent video player, comprising:
In embodiments of the present invention, the process that module of target detection carries out detecting comprises object detection process, moving target is crossed warning line and detected and moving target discrepancy security area detection.
The module of target detection that being illustrated in figure 2 the embodiment of the present invention provides carries out the flow chart of the process of object detection process detection, and as shown in Figure 2, this processing procedure comprises:
Step 101, reads video frame images, if image is the first frame, and initial background model, otherwise according to the image update background model read;
Step 102, obtains the two-value foreground picture of image according to the principle of mixture Gaussian background model;
Step 103, removes the isolated noise point in two-value foreground picture;
Step 104, carries out morphological operation to two-value foreground picture;
Step 105, the connected region that in mark two-value foreground picture, area is greater than the MINAREA (minimum area) of setting alternatively target puts into candidate target chain (Candidate);
Step 106, the target in the object chain (Destination) that matching candidate object chain (Candidate) and former frame detect, realizes following the tracks of;
Step 107, carries out discrepancy warning region to each target in object chain (Destination) and crosses warning line detecting.
The order moving target that being illustrated in figure 3 the embodiment of the present invention provides crosses the flow chart of the process that warning line detects, and as shown in Figure 2, this process comprises:
Step 201, judges that target continued presence frame number meets when imposing a condition and performs step 202;
Step 202, judges whether target has the mark crossing over warning line, no, performs step 203, is, perform step 204;
Step 203, position when judging target current location and previous frame whether at the two ends of warning line, and meets the warning direction of warning line, if it is marks the leap warning line marker bit of this target;
Step 204, judges whether target has gone out the protection zone be present near warning line for warning line is arranged, and if it is marks this target for needs warning.
The flow chart of the process that warning region of coming in and going out the order moving target that being illustrated in figure 4 the embodiment of the present invention provides detects, as shown in Figure 2, this process comprises:
Step 301, judges that target continued presence frame number meets when imposing a condition and performs step 302;
Step 302, judges target whether there is any discrepancy the mark of warning region, no, performs step 303, is, perform step 304.
Step 303, whether position when judging target current location and previous frame is one and is in security area that another is in outside security area, and meet the warning direction of warning region, if it is mark the discrepancy warning region marker bit of this target, and record object is come in and gone out, the direction of warning region is for entering region or leaving region.
Whether identical step 304, judge that target crosses over the comes in and goes out direction of warning region of the direction in region and the target of record, if it is mark the target that this target is needs warning.
In the embodiment of the present invention, the parameter that Video decoding module, module of target detection, transmit control module and video display module can also be arranged according to user carries out subsequent operation.
The relevant parameter of the module of target detection that user is arranged comprises moving target type, moving target color and algorithm parameter.
Moving target type comprises the types such as people, car and thing, and algorithm parameter comprises warning line and warning region parameter.
The relevant parameter of the transmit control module that user is arranged comprises video playback and adopts control or Non-follow control automatically, automatic control mode can control broadcasting speed automatically according to Algorithm Analysis result, retrieve moving target then to play with normal speed, then displaying video fast when not retrieving target; Manual control mode can allow user specify current broadcasting speed to be normal play or quick broadcast mode.
Further, in the embodiment of the present invention, video display module to crossing warning line and the automatic generating snapshot of moving target of warning region of coming in and going out, can be convenient to video investigation personnel fast finding suspected target.
Embodiment two
Embodiment two provided by the invention is a kind of embodiment of player method of intelligent video player, and be illustrated in figure 5 the flow chart of the player method of a kind of intelligent video player that the embodiment of the present invention provides, as shown in Figure 5, the method comprises:
Step 401, calls Video decoding module decoded video file, output video frame;
Step 402, rendering algorithm rule in video requency frame data;
Whether step 403, call in intelligent retrieval Algorithm Analysis module detection current video frame and have moving target to cross warning line or warning region event generation of coming in and going out, if any then upgrading moving target time of occurrence sequence;
Step 404, judges whether current play time belongs to the time series of this moving target appearance, and if it is controlling current broadcasting speed is normal speed forward, otherwise with decoding speed frame of display video, the displaying time of record present frame.
The player method of intelligent video player adopts limit decoding to play the control strategy that Algorithm Analysis is carried out on limit, namely while decoding is play, carries out Algorithm Analysis, is different from the mode that video file is carried out to algorithm preliminary treatment and plays after analyzing again.
Embodiment three
Embodiment three provided by the invention is the embodiment of the concrete use of intelligent video player provided by the invention, is illustrated in figure 6 the flow chart of the using method of a kind of intelligent video player that the embodiment of the present invention provides, comprises:
Step 501, adds video resource, selection analysis algorithm;
Step 502, arranges algorithm parameter, comprises and arranges warning line or warning region, arranges the types such as the behaviour of moving target type, car, thing, arranges the parameters such as the color of moving target;
Step 503, selects video playback mode, and this video playback mode comprises control and Non-follow control two kinds of Play Control modes automatically;
Automatic control mode can control broadcasting speed automatically according to Algorithm Analysis result, retrieves moving target and then plays with normal speed, then displaying video fast when not retrieving target; Manual control mode can allow user specify current broadcasting speed to be normal play or quick broadcast mode.
Step 504, video frequency searching analysis;
Step 505, video playback result shows.
Certain video investigation personnel need to analyze the video of certain control point, spot, search the video segment that suspected target may occur, first intelligent players is opened, the video file that interpolation will be analyzed, select intelligent analysis process, arrange warning line or warning region scheduling algorithm parameter, selection broadcasting speed is automatic control mode.After starting retrieval, when there is no moving target through warning line or warning region, the mode displaying video that video council is put soon with multiple velocity, when having moving target through warning line or warning region, video playout speed can be automatically set as normal speed forward, investigator is facilitated to check the details that moving target occurs, judge whether this moving target is whether suspect or this section of video be useful, use this intelligent players can automatically for investigator gets rid of some may uninterested video contents, thus effectively save the video investigation time, improve efficiency of solving a case.
Those of ordinary skill in the art it is also understood that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an intelligent video player, is characterized in that, described video player comprises the Video decoding module, module of target detection, transmit control module and the video display module that connect successively;
Described Video decoding module receives the video of input and decodes;
Described module of target detection is for detecting in video the moving target crossed warning line or come in and go out security area;
Described transmit control module controls broadcasting speed according to the testing result of described module of target detection, plays with normal speed when the moving target crossed warning line or come in and go out security area being detected, otherwise quick displaying video;
Described video playback display module, according to the broadcasting speed that described transmit control module controls, the content that display video is play.
2. video player as claimed in claim 1, is characterized in that, the process that described module of target detection carries out detecting comprises object detection process, moving target crosses warning line detection and moving target is come in and gone out, and security area detects;
The process that described module of target detection carries out described object detection process detection comprises:
Step 101, reads video frame images, if described image is the first frame, and initial background model, otherwise according to the image update background model read;
Step 102, obtains the two-value foreground picture of described image according to the principle of mixture Gaussian background model;
Step 103, removes the isolated noise point in described two-value foreground picture;
Step 104, carries out morphological operation to described two-value foreground picture;
Step 105, mark connected region that area in described two-value foreground picture is greater than the MINAREA of setting alternatively target put into candidate target chain;
Step 106, mates the target in the object chain that described candidate target chain and former frame detect, realizes following the tracks of;
Step 107, carries out discrepancy warning region to each target in described object chain and crosses warning line detecting.
3. video player as claimed in claim 2, is characterized in that,
Described module of target detection carry out described moving target cross warning line detect process comprise:
Step 201, judges that target continued presence frame number meets when imposing a condition and performs step 202;
Step 202, judges whether described target has the mark crossing over warning line, no, performs step 203, is, perform step 204;
Step 203, position when judging described target current location and previous frame whether at the two ends of described warning line, and meets the warning direction of warning line, if it is marks the leap warning line marker bit of described target;
Step 204, judges whether target has gone out the protection zone be present near warning line for warning line is arranged, and if it is marks described target for needs warning.
4. video player as claimed in claim 2, is characterized in that,
The process that described module of target detection carries out the detection of described moving target discrepancy warning region comprises:
Step 301, judges that target continued presence frame number meets when imposing a condition and performs step 302;
Step 302, judges described target whether there is any discrepancy the mark of warning region, no, performs step 303, is, perform step 304;
Step 303, whether position when judging described target current location and previous frame is one and is in security area that another is in outside security area, and meet the warning direction of warning region, if it is mark the discrepancy warning region marker bit of described target, and record described target and come in and go out the direction of warning region for entering region or leaving region;
Whether identical step 304, judge that described target crosses over the comes in and goes out direction of warning region of the direction in region and the target of described record, if it is mark the target that described target is needs warning.
5. video player as claimed in claim 1, it is characterized in that, the parameter that described module of target detection is arranged according to user carries out subsequent operation;
The relevant parameter of the described module of target detection that described user is arranged comprises moving target type, moving target color and algorithm parameter;
Described moving target type comprises people, car and thing, and described algorithm parameter comprises warning line and warning region parameter.
6. video player as claimed in claim 1, it is characterized in that, the parameter that described transmit control module video display module is arranged according to user carries out subsequent operation;
The relevant parameter of the transmit control module that described user is arranged comprises video playback and adopts control or Non-follow control automatically, described automatic control mode controls broadcasting speed automatically according to Algorithm Analysis result, retrieve moving target then to play with normal speed, then displaying video fast when not retrieving target; Described manual control mode allows user specify current broadcasting speed to be normal play or quick broadcast mode.
7. video player as claimed in claim 1, is characterized in that, described video display module is to crossing warning line and the automatic generating snapshot of moving target of warning region of coming in and going out.
8. a player method for intelligent video player, is characterized in that, described method comprises:
Step 401, calls Video decoding module decoded video file, output video frame;
Step 402, rendering algorithm rule in video requency frame data;
Whether step 403, call in intelligent retrieval Algorithm Analysis module detection current video frame and have moving target to cross warning line or warning region event generation of coming in and going out, if any then upgrading moving target time of occurrence sequence;
Step 404, judges whether current play time belongs to the time series of described moving target appearance, and if it is controlling current broadcasting speed is normal speed forward, otherwise with decoding speed frame of display video, the displaying time of record present frame.
9. player method as claimed in claim 8, is characterized in that, the player method of described intelligent video player adopts limit decoding to play the control strategy that Algorithm Analysis is carried out on limit.
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