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Video jitter and freeze detection method and device based on pixel timing motion analysis

A motion analysis and video jitter technology, applied in image analysis, television, image enhancement, etc., can solve the problem of inability to simultaneously detect jitter and freeze detection in surveillance video

Active Publication Date: 2021-03-16
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a video jitter and freeze detection method and device based on pixel timing motion analysis, so as to solve the problem that the jitter and freeze detection of the monitoring video picture cannot be simultaneously performed in one algorithm framework in the above-mentioned background technology

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  • Video jitter and freeze detection method and device based on pixel timing motion analysis
  • Video jitter and freeze detection method and device based on pixel timing motion analysis
  • Video jitter and freeze detection method and device based on pixel timing motion analysis

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Embodiment 1

[0065] figure 1 It is a flow diagram of a video shake and freeze detection method based on pixel timing motion analysis, Figure 7 It is a flow block diagram of the video jitter and freeze detection method based on pixel timing motion analysis in Implementation 1 of the present invention, as figure 1 and Figure 7 , in an embodiment of the present invention, a video jitter and freeze detection method based on pixel timing motion analysis, the steps are as follows:

[0066] S1. Collect video streams and store them in the memory, and obtain video frame sequence images for several consecutive seconds;

[0067] The video stream is obtained by RTSP mode, and the object detected each time is a video frame sequence Vs of several consecutive seconds, preferably a video frame sequence Vs of two seconds in this embodiment, and at the same time, in order to speed up the algorithm processing speed, all video frames within two seconds are directly Save the frame to memory;

[0068] Amo...

Embodiment 2

[0104] A detection device adopting the video shake and freeze detection method based on pixel timing motion analysis, comprising:

[0105] The collection module is used to collect video streams and obtain video frame sequence images;

[0106] Crop module, be used for cropping video frame sequence image, and the region after cropping is as pending video frame sequence V s ;

[0107] Non-single-mode jitter detection module, used for video frame sequence V to be processed s As the data basis, screen shake detection is carried out;

[0108] The motion amplification processing module is used to perform motion amplification processing on the video frame sequence to be processed, and obtain a video frame sequence V that can reflect small changes in video pixels e ;

[0109] Calculation module, calculates the video frame sequence V to be processed s and the motion-amplified video frame sequence V e The dense optical flow field, get the dense optical flow field V s of and dense...

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Abstract

The present invention relates to a video shake and freeze detection method based on pixel timing motion analysis, the steps are as follows: S1, acquire video frame sequence images; S2, crop video frame sequence images; S3, use video frame sequence V to be processed s As a data basis, carry out non-single-mode jitter detection of the picture; S4, obtain motion amplification video frame sequence V e ; S5. Obtain dense optical flow field V s of and dense optical flow field V e of ; S6, the dense optical flow field V s of and dense optical flow field V e of The information is converted into image information, and the optical flow frame sequence V is obtained s cof and optical flow frame sequence V e cof ; S7. Perform picture freezing and picture single-mode jitter detection respectively; the present invention also discloses a video jitter and freeze detection device based on pixel timing motion analysis. The invention can detect the freezing of the picture with an accuracy rate up to 100%, and the parallel processing of the two shaking detection methods improves the accuracy, the detection speed is fast, and the shaking and freezing detection of the picture are simultaneously realized in a unified algorithm framework.

Description

technical field [0001] The invention relates to the field of video processing, more specifically to the field of intelligent analysis of surveillance video. Background technique [0002] With the gradual advancement of the construction of the "Skynet" monitoring device, tens of millions of cameras are scattered all over the streets and alleys, providing a strong backing for urban security management. On the premise of solving whether there is monitoring, the quality of monitoring is increasingly important for security. Surveillance video screen shakes. Due to the interference of external forces, the video acquisition equipment causes the screen to shake regularly up and down, left and right, or up and down. Surveillance video picture freezing means that the monitoring picture stays at a certain moment. The reason for the surveillance video picture freezing is generally a network failure or human signal interference. Accurate and fast surveillance video screen shake and fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/232G06T7/90G06T7/269G06T7/11G06T5/20
CPCH04N7/18G06T7/269G06T7/11G06T5/20G06T7/90G06T2207/10016G06T2207/30232G06T2207/20016G06T2207/20021H04N23/6811
Inventor 年福东吕刚汪珺白琨
Owner HEFEI UNIV