CN102752569B - A kind of video broadcasting method based on video analysis and system thereof - Google Patents
A kind of video broadcasting method based on video analysis and system thereof Download PDFInfo
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Abstract
A kind of video broadcasting method based on video analysis, including: the video image received is decoded, is reduced into image sequence；Described image sequence frame by frame is analyzed, the image sequence not meeting condition set in advance is filtered, change the playback rate of video image；Image after display filtration.The present invention changes the playback rate of video image by filtercondition set in advance, will be unsatisfactory for the time period automatically fast forward of condition or skips in video, helps user to find video-frequency band faster when having access to surveillance video, saves the time, improves efficiency.It addition, present invention also offers the system of a kind of video playback based on video analysis.
Description
Technical field
The present invention relates to video intelligent analysis and multimedia technology, particularly relate to a kind of based on video analysis regard
Frequently player method and system thereof.
Background technology
In recent years, along with the quickly growth of national economy, the continuous of the most progressive and national power of society strengthen,
The fields such as bank, electric power, traffic, safety check and military installations are to safety precaution and on-the-spot record warning system
Demand grow with each passing day, it is desirable to more and more higher, video monitoring productive life each side obtained widely should
With.But, existing video monitoring system is generally only recorded video image, when user has access to historical summary
During information required for lookup, generally requiring and check a large amount of insignificant video, lose time, efficiency is low.
Such as: during the detection of criminal case, user needs to have access to substantial amounts of surveillance video and looks for one
The suspect vehicle of movement, but, in the surveillance video being had access to, the possible most of the time is seen
See is all insignificant video, such as: do not have the picture of information of vehicles or a picture etc. of resting state, therefore,
Consume a large amount of manpower and time, be not only easily delayed the opportunity solved a case, meanwhile, also easily because seeing for a long time
See that fatigue that insignificant video causes misses target.
Summary of the invention
In view of this, a kind of video broadcasting method based on video analysis need to be provided, can be according to being previously set
Filtercondition video will be unsatisfactory for the time period automatically fast forward of condition or skip over, help user to regard having access to
Frequently find video-frequency band during monitoring video faster, save the time, improve efficiency.
The goal of the invention of the present invention is achieved through the following technical solutions:
A kind of video broadcasting method based on video analysis, including: the video image received is decoded,
It is reduced into image sequence；Described image sequence frame by frame is analyzed, to not meeting condition set in advance
Image sequence filters, and changes the playback rate of video image；Image after display filtration.
Above-mentioned video broadcasting method based on video analysis, wherein: described described image sequence frame by frame is entered
Row is analyzed, and filters the image sequence not meeting condition set in advance, changes the broadcasting of video image
The step of speed includes: obtain a decoded two field picture；Judge whether current frame image meets to preset
Condition；If not meeting condition set in advance, then judge not meet continuously the image of the condition that user sets
Frame number whether less than the numerical value preset；If not less than the numerical value preset, then entering according to mode set in advance
Row subtracts frame and processes；If less than the numerical value preset, or current frame image meets condition set in advance, then will
Current frame image is sent to represent module and shows, and asks next frame image.
Above-mentioned video broadcasting method based on video analysis, wherein: described judge whether current frame image accords with
The step closing condition set in advance includes: judge the information whether having user to set on current frame image；If
There is no the information that user sets on current frame image, then continue to determine whether that current frame image is carried out sound divides
Analysis；Current frame image if desired carries out sound analysis, then caching current frame image is in video analysis queue,
Carry out sound analysis；If need not current frame image is carried out sound analysis, then request next frame image.
Above-mentioned video broadcasting method based on video analysis, wherein: described if desired described image is carried out
Sound is analyzed, then caching current frame image is in video analysis queue, and the step carrying out sound analysis includes:
Judge whether described video analysis queue is cached with previous frame image；If being cached with previous frame image, then sentence
Whether disconnected current frame image is less than threshold values with the difference of previous frame image；If less than threshold values, then caching present frame
Image；If not caching previous frame image, or not less than threshold values, then cache current frame image, and ought
Prior image frame is sent to represent module and shows, and asks next frame image
Above-mentioned video broadcasting method based on video analysis, wherein: also include: if having on current frame image
The information that user sets, then be sent to current frame image represent module and show, and ask next frame figure
Picture.
Above-mentioned video broadcasting method based on video analysis, wherein: described in subtract frame process be by part lose
Abandon or all abandon and do not meet the image sequence of condition set in advance and realize；If described not less than preset
Numerical value, then carry out subtracting, according to mode set in advance, the step that frame processes and include: judge whether to show present frame
Image；If not showing current frame image, then request next frame image；If desired current frame image is shown, then
Current frame image is sent to represent module show, and asks next frame image.
Above-mentioned video broadcasting method based on video analysis, wherein: described if desired show current frame image
When the below equation that is that and if only if is set up, then need to show current frame image:
Wherein,
N is the frame number of the image not meeting the information that user sets continuously；K is the nonnegative integer of no more than l, is to use
The frame number of every l frame transmitted image that family sets.
It addition, the present invention also provides for a kind of audio/video player system based on video analysis.
A kind of audio/video player system based on video analysis, including decoder module, frequency analysis processing module and
Represent module.Wherein, decoder module, for being decoded the video image received, is reduced into image sequence
Row.Video analysis processing module, for being analyzed described image sequence frame by frame, presets not meeting
The image sequence of condition filter, change the playback rate of video image.Represent module for showing
Image after filter.
Above-mentioned audio/video player system based on video analysis, wherein: described video analysis processing module includes
Obtain submodule, judge submodule, subtract frame process submodule and transmit submodule.Wherein, submodule is obtained
Block is used for obtaining a decoded two field picture；Judge submodule, be connected, for root with described acquisition submodule
It is analyzed judging to acquired current frame image according to condition set in advance；Subtract frame and process submodule, with
Described judgement submodule connects, for the judged result according to described judgement submodule, according to set in advance
Mode subtracts frame and processes described image sequence；Transmit submodule, subtract the image after frame processes for transmitting,
And ask next frame image.
Above-mentioned audio/video player system based on video analysis, wherein: described video analysis processing module is also wrapped
Include cache sub-module, be connected with described judgement submodule, be used for caching current frame image, judge son for described
Module is analyzed judging.
Compared with prior art, the video broadcasting method based on video analysis of the present invention, by presetting
Filtercondition change video image playback rate, video will be unsatisfactory for the time period automatically fast forward of condition
Or skip over, help user to find video-frequency band faster when having access to surveillance video, save the time, improve
Efficiency.
The audio/video player system based on video analysis of the present invention, by video analysis processing module to image sequence
Row are analyzed filtering, and change the playback rate of video image, save the time, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the flow chart of present invention video broadcasting method based on video analysis one embodiment；
Fig. 2 is the refinement flow chart of step S12 in Fig. 1 of the present invention；
Fig. 3 is the refinement flow chart of step S122 in Fig. 2 of the present invention；
Fig. 4 is the refinement flow chart of step S124 in Fig. 2 of the present invention；
Fig. 5 is the structure chart of an embodiment of present invention audio/video player system based on video analysis.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with
Embodiment also coordinates accompanying drawing to be explained in detail.
Fig. 1 show the flow chart of present invention video broadcasting method based on video analysis one embodiment.With
Family, by condition set in advance, is had access to video record and is carried out video playback.Should video based on video analysis
The step of player method includes:
Step S11, is decoded the video image received, is reduced into image sequence.Wherein, reduced
The digital image sequence that generally arranges in order of image sequence.
Step S12, is analyzed image sequence frame by frame, to the image sequence not meeting condition set in advance
Filter, change the playback rate of video image.
Step S13, the image after display filtration.In embodiment of the present invention, it is that the frame not abandoned is shown successively
Show on the display device, form animation.Wherein, the frame not abandoned can be at regular intervals, it is also possible to by non-
The mode of fixed interval shows successively.
Therefore, the video broadcasting method based on video analysis of the present invention, by video content is analyzed,
Change the playback rate of video image, save user and watch the time that video spends, improve efficiency.
Fig. 2 show the refinement flow chart of step S12 in Fig. 1 of the present invention.
Step S121, obtains a decoded two field picture.
Step S122, it is judged that whether current frame image meets condition set in advance.In embodiment of the present invention,
The condition as screening that presets has the particular analysis such as people, car or sound analysis etc..
If not meeting condition set in advance, then perform step S123, it is judged that do not meet what user set continuously
Whether the frame number of the image of condition is less than the numerical value preset.In embodiment of the present invention, preset numerical value be by
Time × frame per second determines, such as: one section of video is 25 frames/second, user wishes that picture was protected at continuous 10 seconds
Hold static after begin to change playback rate, then, this preset numerical value be exactly: 10 × 25=250(frame).
If not less than preset numerical value, such as: do not meet continuously the condition that user sets image frame number as
270 frames, then perform step S124, carries out subtracting frame according to mode set in advance and processes.Embodiment party of the present invention
In formula, subtract frame and process the image sequence being to abandon by part or all abandon and do not meet condition set in advance
Realize, to change the broadcasting speed of video image.Such as: for continuous n frame (n is positive integer, by with
Family is specified) all do not meet condition set in advance, will start to carry out according to a certain percentage frame losing from this frame.
During frame losing, if needing to bring up to the playback rate of video image original 8 times, then can lead to
Cross every 8 frame video images only transmit and show 1 frame video image, lose the mode of remaining 7 frame video image
Realize.Certainly, if to skip this section of video image, then this section of video image is all abandoned.
If less than the numerical value preset, or current frame image meets condition set in advance, then perform step
S125, is sent to current frame image represent module and shows, and ask next frame image, again under
The image of one frame is analyzed filtering, and terminates until playing.
The video broadcasting method based on video analysis of the present invention, by filtercondition set in advance to image
Sequence frame by frame is analyzed, and determines that image is the most eligible, then changes video figure by the way of subtracting frame
The playback rate of picture, will be unsatisfactory for the time period automatically fast forward of condition or skips in video image, save the time,
Improve efficiency.
Fig. 3 show the refinement flow chart of step S122 in Fig. 2 of the present invention.Step S1221, it is judged that current
The information that user sets whether is had on two field picture.The people that i.e. judges whether to have user to set on current frame image,
The specific information such as car.Such as: if the specific information that user sets be people or image top half as
Vehicle, then vehicle occurs occurring on people, or image on and if only if current frame image, and vehicle is at figure
During the top half of picture, just judge the information that current frame image has user to set, meet condition set in advance,
Perform step S125, current frame image is sent to represents module and shows, and ask next frame image.
If not having the information that user sets on current frame image, then performing step S1222, it is right to continue to determine whether
Current frame image carries out sound analysis.
If need not current frame image is carried out sound analysis, then perform step S1223, ask next frame image.
Current frame image if desired carries out sound analysis, then caching current frame image is in video analysis queue,
Carry out sound analysis.In embodiment of the present invention, in caching current frame image to video analysis queue, carry out
The step of sound analysis comprises the following steps again:
Step S1224, it is judged that whether be cached with previous frame image in video analysis queue.
If being cached with previous frame image, then perform step S1225, it is judged that current frame image and previous frame image
Whether difference is less than threshold values.In embodiment of the present invention, can be by the side of the relatively gray value of adjacent two frames
Formula realizes.
If less than threshold values, then perform step S1226, cache current frame image, form video analysis queue.
If not caching previous frame image, or not less than threshold values, then perform step S1226, cache present frame
Image, performs step S125 simultaneously, current frame image is sent to represent module and shows, and under request
One two field picture.
Fig. 4 show the refinement flow chart of step S124 in Fig. 2 of the present invention.Step S1241, it may be judged whether
Display current frame image.In embodiment of the present invention, if desired show that current frame image is below and if only if
Equation set up time, then need show current frame image:
Wherein, n is not for be inconsistent continuously
Share the frame number of the image of the information that family sets；K is the nonnegative integer of no more than l, is that user is set in advance
The frame number of every l frame transmitted image；
For lower bracket function, to any real number x,
For integer, andSuch as: (do not meet user for continuous 8 frames when user sets every 8 frame video images herein
The video image of information set) when only transmitting and show 1 frame video image, then need not meeting of display
The video image of the information that user sets as the 8th frame, the 16th frame, the 24th frame ..., 8 × m frame.
If not showing current frame image, then perform step S1223, ask next frame image.
If desired show current frame image, then perform step S125, be sent to represent module by current frame image
Show, and ask next frame image.
Therefore, the video broadcasting method based on video analysis of the present invention, by filtercondition set in advance
Change the playback rate of video image, video will be unsatisfactory for the time period automatically fast forward of condition or skip over, side
Help user to find video-frequency band faster when having access to surveillance video, save the time, improve efficiency.
Fig. 5 show the structure chart of an embodiment of present invention audio/video player system based on video analysis,
Decoder module 10, video analysis processing module 20 and exhibition should be included by audio/video player system based on video analysis
Existing module 30.Wherein, decoder module 10, for being decoded the video image received, is reduced into image
Sequence.Video analysis processing module 20, for being analyzed image sequence frame by frame, presets not meeting
The image sequence of condition filter, change the playback rate of video image.Represent module 30 for showing
Image after filtration.
In embodiment of the present invention, decoder module 10, video analysis processing module 20 and represent module 30
Can be arranged in same device, it is also possible to separately positioned in the different device connected with network.
Video analysis processing module 20 includes obtaining submodule 201, judges submodule 202, subtracts frame and process sub
Module 203, transmission submodule 204 and cache sub-module 205.Wherein, obtain submodule 201 to be used for obtaining
Take a decoded two field picture.In embodiment of the present invention, it is by obtaining submodule 201 from decoder module
Decoded image is obtained frame by frame, for judging that submodule 202 is analyzed judging in 10.
Judge that submodule 202 is connected with obtaining submodule 201, be used for according to condition set in advance being obtained
The current frame image taken is analyzed judging.Analysis described herein judges to include: judge on current frame image
Whether there is the information that user sets；When not having the information that user sets on current frame image, then continuing judgement is
No current frame image is carried out sound analysis；When needs carry out sound analysis to current frame image, then judge
Whether video analysis queue is cached with previous frame image；When being cached with previous frame image, then judge current
Whether two field picture is less than threshold values with the difference of previous frame image.
Subtract frame process submodule 203 and judge that submodule 202 is connected, for according to judging submodule 202
Judged result, subtracts frame according to mode set in advance to image sequence and processes.In embodiment of the present invention,
Subtracting frame process is that the image sequence being abandoned by part or all being abandoned and do not meet condition set in advance comes real
Existing, to change the broadcasting speed of video image.
Transmit submodule 204 and subtract the image after frame processes for transmitting, and ask next frame image.Caching
Module 205 with judge that submodule 202 is connected, be used for caching current frame image, for judging that submodule 202 enters
Row is analyzed and is judged.
The playing process of the present invention is: first video image is decoded by decoder module 10, decodes a frame figure
It is transferred to video analysis processing module 20 after Xiang, video analysis processing module 20 is analyzed filtering image.
Then, video analysis processing module 20 will be analyzed the image after filtering and submit to represent module 30 and play out,
After image is submitted to successfully, video analysis processing module 20 asks next frame image to decoder module 10, then enters
Row is analyzed and is filtered.So repeating, terminating until playing.
Therefore, the audio/video player system based on video analysis of the present invention, by video analysis processing module pair
Image sequence is analyzed filtering, and changes the playback rate of video image, saves the time, improves work efficiency.
These are only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in
Other relevant technical fields, are the most in like manner included in the scope of patent protection of the present invention.
Claims (7)
1. a video broadcasting method based on video analysis, it is characterised in that including:
The video image received is decoded, is reduced into image sequence；
Described image sequence frame by frame is analyzed, to the image sequence not meeting condition set in advance
Row filter, and change the playback rate of video image；Specifically include:
Obtain a decoded two field picture；
Judge whether current frame image meets condition set in advance, wherein, bar set in advance
Part includes people, car particular analysis；
If not meeting condition set in advance, then judge not meet continuously the condition that user sets
Whether the frame number of image is less than the numerical value preset；
If not less than the numerical value preset, then carry out subtracting frame according to mode set in advance and process；Its
In, when the below equation that is that and if only if in subtracting frame and processing is set up, then need to show current frame image:Wherein, n is the frame number of the image not meeting the information that user sets continuously；
K is the nonnegative integer of no more than l, is the frame number of every l frame transmitted image that user sets；Under for
Bracket function, to any real number x,For integer, andAnd
If less than the numerical value preset, or current frame image meets condition set in advance, then will
Current frame image is sent to represent module and shows, and asks next frame image；And
Image after display filtration.
Video broadcasting method based on video analysis the most according to claim 1, its feature exists
In, described judge whether current frame image meets the step of condition set in advance and include:
Judge the information whether having user to set on current frame image；
If there is no the information that user sets on current frame image, then continue to determine whether present frame figure
As carrying out sound analysis；
Current frame image if desired carries out sound analysis, then caching current frame image is to video analysis
In queue, carry out sound analysis；And
If need not current frame image is carried out sound analysis, then request next frame image.
Video broadcasting method based on video analysis the most according to claim 2, its feature exists
In, described if desired described image being carried out sound analysis, then caching current frame image divides to video
In analysis queue, the step carrying out sound analysis includes:
Judge whether described video analysis queue is cached with previous frame image；
If being cached with previous frame image, then whether judge the difference of current frame image and previous frame image
Less than threshold values；
If less than threshold values, then caching current frame image；And
If not caching previous frame image, or not less than threshold values, then cache current frame image, and
Current frame image is sent to represent module show, and asks next frame image.
Video broadcasting method based on video analysis the most according to claim 2, its feature exists
In, also include: if having the information that user sets on current frame image, then by current frame image transmission
Show to representing module, and ask next frame image.
Video broadcasting method based on video analysis the most according to claim 1, its feature exists
In, described in subtract frame and process and abandon or all abandon do not meet condition set in advance by part
Image sequence realizes；If described not less than the numerical value preset, then enter according to mode set in advance
Row subtracts the step of frame process and includes:
Judge whether to show current frame image；
If not showing current frame image, then request next frame image；And
If desired show current frame image, then current frame image being sent to represents module and shows
Show, and ask next frame image.
6. an audio/video player system based on video analysis, it is characterised in that including:
Decoder module, for being decoded the video image received, is reduced into image sequence；
Video analysis processing module, for being analyzed described image sequence frame by frame, to not meeting
The image sequence of condition set in advance filters, and changes the playback rate of video image；Specifically
Including:
Obtain submodule, be used for obtaining a decoded two field picture；
Judge submodule, be connected with described acquisition submodule, for according to condition set in advance
Acquired current frame image is analyzed judge, wherein, condition set in advance include people,
Car particular analysis；
Subtract frame and process submodule, be connected with described judgement submodule, for judging son according to described
The judged result of module, subtracts frame according to mode set in advance to described image sequence and processes；
Wherein, when the below equation that is that and if only if in subtracting frame and processing is set up, then need to show present frame figure
Picture:Wherein, n is the image not meeting the information that user sets continuously
Frame number；K is the nonnegative integer of no more than l, is the frame number of every l frame transmitted image that user sets；
For lower bracket function, to any real number x,For integer, andAnd
Transmit submodule, subtract the image after frame processes for transmitting, and ask next frame image；
And
Represent module, the image after showing filtration.
Audio/video player system based on video analysis the most according to claim 6, its feature exists
In, described video analysis processing module also includes cache sub-module, is connected with described judgement submodule,
For caching current frame image, it is analyzed judging for described judgement submodule.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103974142B (en) * | 2013-01-31 | 2017-08-15 | 深圳市快播科技有限公司 | A kind of video broadcasting method and system |
| CN105245817B (en) * | 2014-06-19 | 2019-08-30 | 深圳力维智联技术有限公司 | Video recording playback method and its device |
| CN104836992A (en) * | 2015-05-08 | 2015-08-12 | 无锡天脉聚源传媒科技有限公司 | Surveillance video recording method and device |
| CN105979189A (en) * | 2016-05-31 | 2016-09-28 | 杭州趣吧科技有限公司 | Video signal processing and storing method and video signal processing and storing system |
| CN107197162B (en) * | 2017-07-07 | 2020-11-13 | 盯盯拍（深圳）技术股份有限公司 | Shooting method, shooting device, video storage equipment and shooting terminal |
| CN110166845B (en) * | 2019-05-13 | 2021-10-26 | Oppo广东移动通信有限公司 | Video playing method and device |
| 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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