CN102752569A - Video playing method and video playing system based on video analysis - Google Patents

Video playing method and video playing system based on video analysis Download PDF

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CN102752569A
CN102752569A CN201210214729XA CN201210214729A CN102752569A CN 102752569 A CN102752569 A CN 102752569A CN 201210214729X A CN201210214729X A CN 201210214729XA CN 201210214729 A CN201210214729 A CN 201210214729A CN 102752569 A CN102752569 A CN 102752569A
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video
frame image
current frame
analysis
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CN102752569B (en
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李磊磊
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Shanghai Jingchang Information Technology Engineering Co., Ltd.
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HANGZHOU SKYVISION INTELLIGENCE SYSTEM CO Ltd
China Security and Surveillance Technology PRC Inc
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Abstract

The invention relates to a video playing method based on the video analysis, and the method comprises steps of decoding a received video image and restoring the received image to an image sequence; analyzing the image sequence frame by frame, filtering the image sequence which cannot meet a preset condition, and changing the playing speed of the video image; and displaying the filtered image. The playing speed of the video image is changed through the previously set filtering condition, a time period which cannot meet the condition in the video is automatically fast-forwarded or neglected, so that users can be helped to more quickly find the video segment when calling a video monitoring image, time can be saved, and the efficiency can be improved. In addition, the invention also provides a video playing system based on the video analysis.

Description

A kind of video broadcasting method and system thereof based on video analysis
Technical field
The present invention relates to video intelligent analysis and multimedia technology, relate in particular to a kind of video broadcasting method and system thereof based on video analysis.
Background technology
In recent years; Along with fast growth of national economy, the rapid progress of society and the continuous enhancing of national power; Grow with each passing day to the demand of safety precaution and on-the-spot record warning system in fields such as bank, electric power, traffic, safety check and military installations; Require increasingly highly, video monitoring has obtained widely using in the productive life each side.Yet existing video monitoring system is recorded video image just usually, when the user has access to historical summary and searches needed information, often need check a large amount of insignificant videos, loses time, and efficient is low.For example: in the process of the detection of criminal case, the user need have access to a large amount of surveillance videos and go to seek a mobile suspect vehicle, yet; In the surveillance video of being had access to; What the possible most of the time was watched all is insignificant video, as: there are not the picture of information of vehicles or the picture of inactive state etc., therefore; Consume a large amount of manpowers and time; Not only incur loss through delay the opportunity of solving a case easily, simultaneously, also miss target because of the fatigue of watching insignificant video to cause for a long time easily.
Summary of the invention
In view of this; A kind of video broadcasting method based on video analysis need be provided, can help the user when having access to surveillance video, to find video-frequency band faster according to prior filter condition with automatic F.F. of the time period that does not satisfy condition in the video or skip over; Save time, raise the efficiency.
Goal of the invention of the present invention realizes through following technical scheme:
A kind of video broadcasting method based on video analysis comprises: the video image to receiving is decoded, and is reduced into image sequence; Said image sequence is analyzed by frame, the image sequence that does not meet predetermined conditions is filtered, change the playback rate of video image; Show the image after filtering.
Above-mentioned video broadcasting method based on video analysis; Wherein: said said image sequence is analyzed by frame; Image sequence to not meeting predetermined conditions filters, and the step that changes the playback rate of video image comprises: obtain a decoded two field picture; Judge whether current frame image meets predetermined conditions; If do not meet predetermined conditions, whether the frame number of then judging the image that does not meet the condition that the user sets continuously is less than preset numerical value; If be not less than preset numerical value, then subtract frame and handle according to predefined mode; If less than preset numerical value, perhaps current frame image meets predetermined conditions, then current frame image is sent to and represents module and show, and request next frame image.
Above-mentioned video broadcasting method based on video analysis, wherein: the said step of judging whether current frame image meets predetermined conditions comprises: judge the information that whether has the user to set on the current frame image; If the information that does not have the user to set on the current frame image then continues to judge whether current frame image is carried out the sound analysis; If need carry out the sound analysis to current frame image, then the buffer memory current frame image carries out the sound analysis in the video analysis formation; If need not carry out the sound analysis, then ask the next frame image to current frame image.
Above-mentioned video broadcasting method based on video analysis; Wherein: said if need carry out the sound analysis to said image; Then the buffer memory current frame image is in the video analysis formation, and the step of carrying out the sound analysis comprises: judge whether buffer memory has the former frame image in the said video analysis formation; If buffer memory has the former frame image, whether the difference of then judging current frame image and former frame image is less than threshold values; If less than threshold values, buffer memory current frame image then; If there is not buffer memory former frame image, perhaps be not less than threshold values, buffer memory current frame image then, and current frame image is sent to represents module and show, and request next frame image
Above-mentioned video broadcasting method based on video analysis, wherein: also comprise: if the information that has the user to set on the current frame image, then current frame image is sent to and represents module and show, and request next frame image.
Above-mentioned video broadcasting method based on video analysis, wherein: said to subtract that frame handles be to abandon or all abandon the image sequence that does not meet predetermined conditions through part to realize; Said if be not less than preset numerical value, then subtract the frame processed steps and comprise: judge whether to show current frame image according to predefined mode; If do not show current frame image, then ask the next frame image; If need to show current frame image, then current frame image is sent to and represents module and show, and request next frame image.
Above-mentioned video broadcasting method based on video analysis; Wherein: said if when need showing current frame image to be that and if only if following the equality establishment; Then need show current frame image: wherein, n is the frame number of the image of the information that do not meet the user continuously and set; K is the nonnegative integer that is not more than l, is the frame number of every l frame transmitted image of setting of user.
In addition, the present invention also provides a kind of audio/video player system based on video analysis.
A kind of audio/video player system based on video analysis comprises decoder module, frequency analysis processing module and represents module.Wherein, decoder module is used for the video image that receives is decoded, and is reduced into image sequence.Video analysis processing module is used for said image sequence is analyzed by frame, and the image sequence that does not meet predetermined conditions is filtered, and changes the playback rate of video image.Represent the image after module is used to show filtration.
The above-mentioned audio/video player system based on video analysis, wherein: said video analysis processing module comprises to be obtained submodule, judge submodule, subtracts the frame processing sub and transmits submodule.Wherein, obtain submodule and be used to obtain a decoded two field picture; Judge submodule, be connected, be used for the current frame image that is obtained being carried out analysis and judgement according to predetermined conditions with the said submodule that obtains; Subtract the frame processing sub, be connected, be used for judged result, according to predefined mode said image sequence is subtracted frame and handle according to said judgement submodule with said judgement submodule; Transmit submodule, be used to transmit the image that subtracts after frame is handled, and request next frame image.
The above-mentioned audio/video player system based on video analysis, wherein: said video analysis processing module also comprises cache sub-module, is connected with said judgement submodule, is used for the buffer memory current frame image, supplies said judgement submodule to carry out analysis and judgement.
Compared with prior art; Video broadcasting method based on video analysis of the present invention; Change the playback rate of video image through predefined filtercondition, with automatic F.F. of the time period that does not satisfy condition in the video or skip over, help the user when having access to surveillance video, to find video-frequency band faster; Save time, raise the efficiency.
Audio/video player system based on video analysis of the present invention carries out analysis and filter through video analysis processing module to image sequence, changes the playback rate of video image, saves time, and increases work efficiency.
Description of drawings
Fig. 1 is the flow chart that the present invention is based on video broadcasting method one execution mode of video analysis;
Fig. 2 is the refinement flow chart of step S12 among Fig. 1 of the present invention;
Fig. 3 is the refinement flow chart of step S122 among Fig. 2 of the present invention;
Fig. 4 is the refinement flow chart of step S124 among Fig. 2 of the present invention;
Fig. 5 is the structure chart of an execution mode that the present invention is based on the audio/video player system of video analysis.
Embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
Shown in Figure 1 is the flow chart that the present invention is based on video broadcasting method one execution mode of video analysis.The user has access to video record and carries out video playback through predetermined conditions.This step based on the video broadcasting method of video analysis comprises:
Step S11 decodes to the video image that receives, and is reduced into image sequence.Wherein, the image sequence that is reduced is generally the digital image sequence of arranging in order.
Step S12 analyzes by frame image sequence, and the image sequence that does not meet predetermined conditions is filtered, and changes the playback rate of video image.
Step S13 shows the image after filtering.In the embodiment of the present invention, be that the frame that does not abandon is presented on the display device successively, form animation.Wherein, the frame that does not abandon can also can show by on-fixed mode at interval by fixed intervals successively.
Therefore, the video broadcasting method based on video analysis of the present invention through video content is analyzed, changes the playback rate of video image, practices thrift the time that the user watches the video cost, raises the efficiency.
Refinement flow chart for step S12 among Fig. 1 of the present invention shown in Figure 2.
Step S121 obtains a decoded two field picture.
Step S122 judges whether current frame image meets predetermined conditions.In the embodiment of the present invention, the condition that preestablishes as screening has particular analysis such as people, car or sound analysis etc.
If do not meet predetermined conditions, execution in step S123 then, whether the frame number of judging the image that does not meet the condition that the user sets continuously is less than preset numerical value.In the embodiment of the present invention; Preset numerical value by time * the frame per second decision, for example: one section video was 25 frame/seconds, the user hopes that picture just begins to change playback rate after maintenance in continuous 10 seconds is static; So, this preset numerical value is exactly: 10 * 25=250 (frame).
If be not less than preset numerical value, for example: the frame number that does not meet the image of the condition that the user sets continuously is 270 frames, and then execution in step S124 subtracts frame according to predefined mode and handles.In the embodiment of the present invention, subtracting the frame processing is to abandon or all abandon the image sequence that does not meet predetermined conditions through part to realize, to change the broadcasting speed of video image.For example: all do not meet predetermined conditions for continuous n frame (n is a positive integer, is specified by the user), will begin to carry out according to a certain percentage frame losing from this frame.In the frame losing process, if desired the playback rate of video image is brought up to original 8 times, then can only transmit and show 1 frame video image through per 8 frame video images, the mode of losing all the other 7 frame video images realizes.Certainly, if skip this section video image, then this section video image is all abandoned.
If less than preset numerical value, perhaps current frame image meets predetermined conditions, then execution in step S125; Current frame image is sent to represents module and show; And request next frame image, the image to next frame carries out analysis and filter again, finishes up to playing.
Video broadcasting method based on video analysis of the present invention; Through predefined filtercondition image sequence is analyzed by frame; Confirm whether image is eligible, change the playback rate of video image then through the mode that subtracts frame, with automatic F.F. of the time period that does not satisfy condition in the video image or skip over; Save time, raise the efficiency.
Refinement flow chart for step S122 among Fig. 2 of the present invention shown in Figure 3.Step S1221 judges the information that whether has the user to set on the current frame image.Promptly judge information specific such as the people that whether has the user to set on the current frame image, car.For example: if the information specific that the user sets is that people or image the first half are vehicle, the people occurs on and if only if the so current frame image, perhaps vehicle occurs on the image; And vehicle is when the first half of image; Just judge the information that current frame image has the user to set, meet predetermined conditions, execution in step S125; Current frame image is sent to represents module and show, and request next frame image.
If the information that does not have the user to set on the current frame image, then execution in step S1222 continues to judge whether current frame image is carried out the sound analysis.
If need not carry out the sound analysis to current frame image, then execution in step S1223 asks the next frame image.
If need carry out the sound analysis to current frame image, then the buffer memory current frame image carries out the sound analysis in the video analysis formation.In the embodiment of the present invention, the buffer memory current frame image is in the video analysis formation, and the step of carrying out the sound analysis may further comprise the steps again:
Step S1224 judges whether buffer memory has the former frame image in the video analysis formation.
If buffer memory has the former frame image, execution in step S1225 then, whether the difference of judging current frame image and former frame image is less than threshold values.In the embodiment of the present invention, the mode of gray value that can be through more adjacent two frames realizes.
If less than threshold values, execution in step S1226 then, the buffer memory current frame image forms the video analysis formation.
If there is not buffer memory former frame image, perhaps be not less than threshold values, execution in step S1226 then, the buffer memory current frame image, execution in step S125 simultaneously is sent to current frame image and represents module and show, and request next frame image.
Refinement flow chart for step S124 among Fig. 2 of the present invention shown in Figure 4.Step S1241 judges whether to show current frame image.In the embodiment of the present invention; If when need showing current frame image to be that and if only if following the equality establishment; Then need show current frame image:
Figure BDA00001815744900061
wherein, n is the frame number of the image of the information that do not meet the user continuously and set; K is the nonnegative integer that is not more than l, is the frame number of the predefined every l frame transmitted image of user;
Figure BDA00001815744900062
is following bracket function; To any real number x;
Figure BDA00001815744900063
is integer; And
Figure BDA00001815744900064
for example: when the user sets that per 8 frame video images (not meeting the video image of the information that the user sets here for continuous 8 frames) only transmit and when showing 1 frame video image; The video image of the information that does not meet user's setting that then need show is: the 8th frame; The 16th frame; The 24th frame;, the 8th * m frame.
If do not show current frame image, then execution in step S1223 asks the next frame image.
If need to show current frame image, execution in step S125 then is sent to current frame image and represents module and show, and request next frame image.
Therefore; Video broadcasting method based on video analysis of the present invention; Change the playback rate of video image through predefined filtercondition, with automatic F.F. of the time period that does not satisfy condition in the video or skip over, help the user when having access to surveillance video, to find video-frequency band faster; Save time, raise the efficiency.
The structure chart of an execution mode for the audio/video player system that the present invention is based on video analysis shown in Figure 5 should comprise decoder module 10, video analysis processing module 20 and represent module 30 based on audio/video player system of video analysis.Wherein, decoder module 10 is used for the video image that receives is decoded, and is reduced into image sequence.Video analysis processing module 20 is used for image sequence is analyzed by frame, and the image sequence that does not meet predetermined conditions is filtered, and changes the playback rate of video image.Represent the image after module 30 is used to show filtration.
In the embodiment of the present invention, decoder module 10, video analysis processing module 20 and represent module 30 and can be arranged in the same device also can separate being arranged in the different device that connects with network.
Video analysis processing module 20 comprises to be obtained submodule 201, judge submodule 202, subtracts frame processing sub 203, transmits submodule 204 and cache sub-module 205.Wherein, obtain submodule 201 and be used to obtain a decoded two field picture.In the embodiment of the present invention, be from decoder module 10, to obtain decoded image, supply to judge that submodule 202 carries out analysis and judgement by frame through obtaining submodule 201.
Judge submodule 202 and obtain submodule 201 and be connected, be used for the current frame image that is obtained being carried out analysis and judgement according to predetermined conditions.Said here analysis and judgement comprises: judge the information that whether has the user to set on the current frame image; When not having information that the user sets on the current frame image, then continue to judge whether current frame image is carried out the sound analysis; When needs carry out the sound analysis to current frame image, judge then whether buffer memory has the former frame image in the video analysis formation; When buffer memory had the former frame image, whether the difference of then judging current frame image and former frame image was less than threshold values.
Subtract frame processing sub 203 and judge that submodule 202 is connected, be used for, according to predefined mode image sequence is subtracted frame and handle according to the judged result of judging submodule 202.In the embodiment of the present invention, subtracting the frame processing is to abandon or all abandon the image sequence that does not meet predetermined conditions through part to realize, to change the broadcasting speed of video image.
Transmit submodule 204 and be used to transmit the image that subtracts after frame is handled, and request next frame image.Cache sub-module 205 is connected with judgement submodule 202, is used for the buffer memory current frame image, supplies to judge that submodule 202 carries out analysis and judgement.
Playing process of the present invention is: decoder module 10 is at first decoded to video image, is transferred to video analysis processing module 20 behind the two field picture of decoding, and carries out the analysis and filter image by video analysis processing module 20.Then, video analysis processing module 20 is submitted to the image after the analysis and filter and is represented module 30 and play, and after image was submitted to successfully, video analysis processing module 20 was carried out analysis and filter again to decoder module 10 request next frame images.So repeat, finish up to playing.
Therefore, the audio/video player system based on video analysis of the present invention carries out analysis and filter through video analysis processing module to image sequence, changes the playback rate of video image, saves time, and increases work efficiency.
More than be merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (10)

1. the video broadcasting method based on video analysis is characterized in that, comprising:
Video image to receiving is decoded, and is reduced into image sequence;
Said image sequence is analyzed by frame, the image sequence that does not meet predetermined conditions is filtered, change the playback rate of video image; And
Show the image after filtering.
2. the video broadcasting method based on video analysis according to claim 1; It is characterized in that; Said said image sequence is analyzed by frame, the image sequence that does not meet predetermined conditions is filtered, the step that changes the playback rate of video image comprises:
Obtain a decoded two field picture;
Judge whether current frame image meets predetermined conditions;
If do not meet predetermined conditions, whether the frame number of then judging the image that does not meet the condition that the user sets continuously is less than preset numerical value;
If be not less than preset numerical value, then subtract frame and handle according to predefined mode; And
If less than preset numerical value, perhaps current frame image meets predetermined conditions, then current frame image is sent to and represents module and show, and request next frame image.
3. the video broadcasting method based on video analysis according to claim 2 is characterized in that, the said step of judging whether current frame image meets predetermined conditions comprises:
Judge the information that whether has the user to set on the current frame image;
If the information that does not have the user to set on the current frame image then continues to judge whether current frame image is carried out the sound analysis;
If need carry out the sound analysis to current frame image, then the buffer memory current frame image carries out the sound analysis in the video analysis formation; And
If need not carry out the sound analysis, then ask the next frame image to current frame image.
4. the video broadcasting method based on video analysis according to claim 3 is characterized in that, said then the buffer memory current frame image is in the video analysis formation if need carry out the sound analysis to said image, and the step of carrying out the sound analysis comprises:
Judge whether buffer memory has the former frame image in the said video analysis formation;
If buffer memory has the former frame image, whether the difference of then judging current frame image and former frame image is less than threshold values;
If less than threshold values, buffer memory current frame image then; And
If there is not buffer memory former frame image, perhaps be not less than threshold values, buffer memory current frame image then, and current frame image is sent to represents module and show, and request next frame image.
5. the video broadcasting method based on video analysis according to claim 3 is characterized in that, also comprises: if the information that has the user to set on the current frame image, then current frame image is sent to and represents module and show, and request next frame image.
6. the video broadcasting method based on video analysis according to claim 2 is characterized in that, said to subtract that frame handles be to abandon or all abandon the image sequence that does not meet predetermined conditions through part to realize; Said if be not less than preset numerical value, then subtract the frame processed steps and comprise according to predefined mode:
Judge whether to show current frame image;
If do not show current frame image, then ask the next frame image; And
If need to show current frame image, then current frame image is sent to and represents module and show, and request next frame image.
7. the video broadcasting method based on video analysis according to claim 6; It is characterized in that; Said if when need showing current frame image to be that and if only if following the equality establishment; Then need show current frame image: wherein, n is the frame number of the image of the information that do not meet the user continuously and set; K is the nonnegative integer that is not more than l, is the frame number of every l frame transmitted image of setting of user;
Figure FDA00001815744800022
is following bracket function; To any real number x;
Figure FDA00001815744800023
is integer, and
Figure FDA00001815744800024
8. the audio/video player system based on video analysis is characterized in that, comprising:
Decoder module is used for the video image that receives is decoded, and is reduced into image sequence;
Video analysis processing module is used for said image sequence is analyzed by frame, and the image sequence that does not meet predetermined conditions is filtered, and changes the playback rate of video image; And
Represent module, be used to show the image after the filtration.
9. the audio/video player system based on video analysis according to claim 8 is characterized in that, said video analysis processing module comprises:
Obtain submodule, be used to obtain a decoded two field picture;
Judge submodule, be connected, be used for the current frame image that is obtained being carried out analysis and judgement according to predetermined conditions with the said submodule that obtains;
Subtract the frame processing sub, be connected, be used for judged result, according to predefined mode said image sequence is subtracted frame and handle according to said judgement submodule with said judgement submodule; And
Transmit submodule, be used to transmit the image that subtracts after frame is handled, and request next frame image.
10. the audio/video player system based on video analysis according to claim 9; It is characterized in that said video analysis processing module also comprises cache sub-module, be connected with said judgement submodule; Be used for the buffer memory current frame image, supply said judgement submodule to carry out analysis and judgement.
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CN110099285A (en) * 2019-06-12 2019-08-06 杭州雅顾科技有限公司 A kind of net cast quality control method, device, equipment and medium

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