Video jitter and freezing detection method and device based on pixel time sequence motion analysis
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A technology of motion analysis and video shaking, applied in image analysis, TV, color TV, etc., can solve the problem that the monitoring video screen cannot be shaken and freeze detection at the same time
Active Publication Date: 2019-08-30
HEFEI UNIV
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[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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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 invention relates to a video jitter and freezing detection method based on pixel time sequence motion analysis. The method comprises the following steps: S1, obtaining a video frame sequence image; s2, cutting a video frame sequence image; s3, on the basis of the to-be-processed video frame sequence Vs, carrying out image non-single mode jitter detection; s4, obtaining a motion amplification video frame sequence Ve; s5, acquiring a dense optical flow field Vsof and a dense optical flow field Veof; s6, converting the dense optical flow field Vsof and the dense optical flow field Veof information into image information, and obtaining an optical flow frame sequence Vscof and an optical flow frame sequence Vecof; s7, respectively carrying out picture freezing and picture single-mode jitterdetection. The invention further discloses a video jitter and freezing detection device based on pixel time sequence motion analysis. The image freezing detection accuracy can reach 100%, the accuracy is improved through parallel processing of the two jitter detection methods, the detection speed is high, and image jitter and freezing detection are achieved at the same time in a unified algorithmframework.
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...
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