Dynamic Object Detection Method Based on Video Stream Codebook Model
A dynamic target and detection method technology, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problems of difficult real-time implementation, low detection accuracy, neglect of pixel connection, etc., to avoid low detection accuracy, Improve the detection accuracy and realize the effect of real-time processing
A dynamic target and detection method technology, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problems of difficult real-time implementation, low detection accuracy, neglect of pixel connection, etc., to avoid low detection accuracy, Improve the detection accuracy and realize the effect of real-time processing
CN109379595BActive Publication Date: 2021-10-15智林信息技术股份有限公司
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[0034] The following describes the technical solution of the present invention in detail in conjunction with the embodiments: the present invention makes full use of information such as the macroblock type, prediction mode, quantization parameter, motion vector residual and pixel residual of the coded block in the video stream, and the codebook model is based on the code The above information is established by the block, and the dynamic target detection is carried out by analyzing whether the coded block of the video code stream matches the background code word.
[0035] Assume that the video code stream adopts the video compression standard H.264, and the pixel block size is 4x4; The CBP of the pixel residual distribution will be written into the code stream, and the intra-frame prediction codebook is established through the above information; for the inter-frame coding forward prediction coding block, the macroblock type, sub-macroblock type, quantization parameter, motion B...
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The present invention relates to the technical field of moving target detection in video processing, in particular to a dynamic target detection method based on a codebook model of a video stream; the technical problem to be solved is: to provide a dynamic target detection method based on a codebook model of a video stream Method, this method makes full use of the correlation between the pixels of the coding block, avoiding time-consuming operations such as reconstruction and loop filtering in the decoding process; the technical solution adopted to solve this technical problem is: the codebook model is based on the pixel coding block Establishment, by analyzing the information such as the macroblock type, prediction mode, quantization parameter, motion vector residual and pixel residual of the coded block of the video stream, two types of codewords, intra-frame prediction and inter-frame prediction, are respectively established, and through analysis Whether the coded block of the video code stream matches the background code word is used for dynamic target detection; the method of the invention is applied to the dynamic target detection in the field of video processing.
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technical field [0001] The invention relates to the technical field of moving target detection in video processing, in particular to a dynamic target detection method based on a video code stream codebook model. Background technique [0002] Dynamic target detection has always been a hot issue in the field of computer vision research, and has a wide range of applications in real life. Intelligent transportation, intelligent video surveillance, object tracking, etc. all require the effect of dynamic target detection as a guarantee; usually dynamic target detection The purpose is to detect the changing area of the target in the sequence image and extract the dynamic target from the background image; traditional dynamic target detection algorithms include frame difference method, optical flow method and background subtraction method, among which background subtraction method is widely used The key to the background subtraction method lies in the establishment of the backgroun...
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Patent Timeline
15 Oct 2021
Publication
CN109379595B
- IPC
- H04N19/176; H04N19/186; H04N19/61; H04N19/142; H04N19/625; H04N19/50
- CPC
- H04N19/142; H04N19/176; H04N19/186; H04N19/50; H04N19/61; H04N19/625
- Inventors
- 李付江; 张起贵