CN103747164B - A kind of video pictures have variation or static method for detecting - Google Patents
A kind of video pictures have variation or static method for detecting Download PDFInfo
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- CN103747164B CN103747164B CN201410039069.5A CN201410039069A CN103747164B CN 103747164 B CN103747164 B CN 103747164B CN 201410039069 A CN201410039069 A CN 201410039069A CN 103747164 B CN103747164 B CN 103747164B
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- 238000012544 monitoring process Methods 0.000 abstract description 6
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Abstract
The invention discloses a kind of video pictures variation or static method for detecting, including in period P, by the frame of the preset time span between initial frame and present frame, it is compared with present frame, judge whether the data variation in the predeterminable area of present frame is more than threshold values, if being less than threshold values, sends out video pictures still command, using next frame data as present frame, and repeat the above steps.The method for detecting can judge whether target area has variation in longer period, so as to improve the detecting accuracy of security protection, monitoring system.
Description
Technical field
The present invention relates to security protection, monitoring device video pictures detection method more particularly to a kind of video pictures have variation or
Static method for detecting.
Background technology
With security protection, the fast development of monitoring technology, video pictures method for detecting is able to extensively in security protection, monitoring system
Using, wherein, using the video at the safety-protection system scene of shooting with video-corder, each frame data of the video are preserved, utilize the variation of frame data
It measures to judge whether the picture in target area has variation, is recorded or alarmed later.Detecing applied in existing system
Current frame data and 1-5 frame data before are only compared by survey method, when the data variation amount of the two is more than threshold values,
It then records the time point and sends out alarm command.But when the image in region is in minor change, for example, with five hours
Yishanmen is opened, then the variable quantity of adjacent two frame data is extremely small, does not exceed threshold values, and therefore, safety-protection system will not be sent out
Alarm causes detecting result inaccurate, threatens to user security.
Invention content
The technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, providing a kind of video pictures has variation
Or static method for detecting, the method for detecting can judge whether target area has variation in longer period, so as to improve
Security protection, the detecting accuracy of monitoring system.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of video pictures have variation or static method for detecting, include the following steps：It, will be initial in period P
The frame of preset time span between frame and present frame, is compared with present frame, judges the number in the predeterminable area of present frame
Whether it is more than threshold values according to variation, if being less than threshold values, sends out video pictures still command, using next frame data as current
Frame, and repeat the above steps.
Preferably, it further includes：In period P, by the frame of the preset time span between initial frame and present frame, with working as
Previous frame is compared, and judges whether the data variation in the predeterminable area of present frame is more than threshold values, if it is more than threshold values to have one,
Sending out video pictures has variation to instruct, and by present frame as initial frame, using next frame data as present frame, and repeats step and opens
Begin.
Preferably, also the previous frame comprising present frame is compared with present frame, is judged in the predeterminable area of present frame
Whether data variation is more than threshold values.
A kind of video pictures disclosed by the invention have variation or static method for detecting, initial including in period P, inciting somebody to action
The frame of preset time span between frame and present frame, is compared with present frame, judges the number in the predeterminable area of present frame
Whether it is more than threshold values according to variation, if being less than threshold values, sends out video pictures still command, using next frame data as current
Frame, and repeat the above steps.The method for detecting can judge whether target area has variation in longer period, so as to improve
Security protection, the detecting accuracy of monitoring system.
Description of the drawings
Fig. 1 detects process schematic for first embodiment of the invention.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and examples.
The invention discloses a kind of video pictures variation or static method for detecting, which includes following step
Suddenly：In period P, the frame of the preset time span between initial frame and present frame with present frame is compared, judges to work as
Whether the data variation in the predeterminable area of previous frame is more than threshold values, if being less than threshold values, sends out video pictures still command,
And relevant operation is performed, using next frame data as present frame, and repeat the above steps.Above-mentioned predeterminable area can be that video is drawn
The whole region in face or the regional area of video pictures.If the setting regions is only regional area, the office is only judged
Whether the video pictures in portion region have variation, are not made a decision whether variation to the video pictures in other regions, the regional area
It can be rectangular, round or arbitrary shape that when user setting parameter is drawn.
Further, above-mentioned steps further include：In period P, by the preset time between initial frame and present frame across
The frame of degree, is compared with present frame, judges whether the data variation in the predeterminable area of present frame is more than threshold values, if there is one
More than threshold values, then sending out video pictures has variation to instruct, and perform relevant operation, by present frame as initial frame, by next frame
Data repeat step and start as present frame.
As a kind of preferred embodiment, the also previous frame comprising present frame is compared with present frame, judges the pre- of present frame
If whether the data variation in region is more than threshold values.
Above-mentioned method for detecting can be realized by following examples.
Embodiment 1：
T0 has the period of variation to the Tn moment for video pictures, wherein, current frame data is only carried out with previous frame data
Comparison, i.e. T1 moment and the frame data at T0 moment compare, and the Tn moment is compared with Tn-1 moment frame data, if frame data change
More than threshold values, then sending out video pictures has variation to instruct.
T0 is the subsequent time of Tn, and after the frame data at t0 moment are compared with the frame data at Tn moment, frame data change not
More than threshold values, then judge that video pictures are static, system enters video pictures stationary state detection state.
In period m, since the duration of period m is shorter, so by current frame data and each frame number before
According to being compared, up to the t0 moment, the state of video pictures within period m is judged, if in the predeterminable area of present frame
Data variation is more than threshold values, then sending out video pictures has the instruction of variation, and using present frame as initial frame again assignment, if working as
Data variation in the predeterminable area of previous frame is less than threshold values, then sends out video pictures still command, continues assignment, right later
Than.
In period P, since the duration of period P is longer, such as this when a length of 1 hour, then carry out following manner pair
Than：
1st, current frame data and previous frame data are compared, i.e. tn moment frame data and tn-1 moment frame data carry out pair
Than；
2nd, current frame data and initial value are compared, i.e., tn moment frame data are compared with t0 moment frame data；
3rd, the frame data of the preset time span between initial value and current frame data and current frame data are compared, i.e.,
Between t0 moment and tn moment the time point of preset time span as sampled point, by the frame data and present frame of each sampled point
Data are compared, for example, the present embodiment, by the duration quartering between t0 moment and tn moment, sampled point is respectivelyWhen
Carve,Moment andMoment, and the frame data at three moment are compared respectively with current frame data, which
Under, the tn moment does not compare with the frame data at t0 moment, and sampled point is onlyMoment,Moment andMoment.
Aforesaid way 1 to mode 3 can individually be implemented, can also by tn moment frame data respectively with the t0 moment,When
Carve,Moment andThe frame data at moment and tn-1 moment are compared, so as to fulfill using preset time span as sampled point
It is compared.It should be noted that the technical scheme is that judging that the regional area of video pictures or whole region exist
Whether there is variation in long period, in order to meet " long period " this condition, the value of the n in tn is preferably n ＞ 5, also
It is to say as n ＞ 5, is judged using the above process, monitored.
The above process and above-mentioned sample mode in the present embodiment can also effectively reduce the operand of safety-protection system,
In practical applications, if security protection processing system have enough processing capacity and arithmetic speed, can also shorten preset time across
Degree improves the quantity of sampled point so that safety-protection system detecting result it is more accurate.
A kind of video pictures disclosed by the invention have variation or static method for detecting, initial including in period P, inciting somebody to action
The frame of preset time span between frame and present frame, is compared with present frame, judges the number in the predeterminable area of present frame
Whether it is more than threshold values according to variation, if being less than threshold values, sends out video pictures still command, using next frame data as current
Frame, and repeat the above steps.The method for detecting can judge whether target area has variation in longer period, so as to improve
Security protection, the detecting accuracy of monitoring system.
The above is preferred embodiments of the present invention, is not intended to restrict the invention, all technology models in the present invention
Interior done modification, equivalent replacement or improvement etc. are enclosed, should be included in the range of of the invention protect.
Claims (2)
1. a kind of video pictures have variation or static method for detecting, which is characterized in that include the following steps：In period P,
It by the frame of the preset time span between initial frame and present frame, is compared with present frame, judges the predeterminable area of present frame
Whether interior data variation is more than threshold values, if being less than threshold values, sends out video pictures still command, if having a frame with working as
The data variation of previous frame comparison is more than threshold values, then sending out video pictures has variation to instruct.
2. video pictures as described in claim 1 have variation or static method for detecting, which is characterized in that also comprising present frame
Previous frame compared with present frame, judge whether data variation in the predeterminable area of present frame is more than threshold values.
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| CN107404419B (en) * | 2017-08-01 | 2020-09-01 | 南京华苏科技有限公司 | Network coverage performance test anti-false test method and device based on picture or video |
| CN107656544B (en) * | 2017-11-10 | 2020-10-23 | 广东工业大学 | Unmanned aerial vehicle control method and system |
| CN108540743B (en) * | 2018-03-23 | 2020-11-06 | 佛山市台风网络科技有限公司 | Image data storage method and system based on video monitoring |
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| CN101777183A (en) * | 2009-01-13 | 2010-07-14 | 北京中星微电子有限公司 | Method and device for detecting stationary object and method and device for detecting abandoned object |
| CN102128616A (en) * | 2010-01-14 | 2011-07-20 | 原相科技股份有限公司 | Method for detecting object movement and detection system |
| CN102722700A (en) * | 2012-05-17 | 2012-10-10 | 浙江工商大学 | Method and system for detecting abandoned object in video monitoring |
| CN103067702A (en) * | 2012-12-06 | 2013-04-24 | 新疆公众信息产业股份有限公司 | Video concentration method used for video with still picture |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777183A (en) * | 2009-01-13 | 2010-07-14 | 北京中星微电子有限公司 | Method and device for detecting stationary object and method and device for detecting abandoned object |
| CN102128616A (en) * | 2010-01-14 | 2011-07-20 | 原相科技股份有限公司 | Method for detecting object movement and detection system |
| CN102722700A (en) * | 2012-05-17 | 2012-10-10 | 浙江工商大学 | Method and system for detecting abandoned object in video monitoring |
| CN103067702A (en) * | 2012-12-06 | 2013-04-24 | 新疆公众信息产业股份有限公司 | Video concentration method used for video with still picture |
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