A method for extracting video dynamic and static mixed key frames
A key frame, dynamic and static technology, applied in the computer field, can solve problems such as unfavorable storage, transmission and copying, and difficulty in extracting valuable information
Active Publication Date: 2020-03-06
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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However, massive video is not only not conducive to storage, transmission and copying, but also difficult to extract valuable information from it.
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] The present invention provides a method for extracting video dynamic and static mixed key frames, such as figure 1 shown, including the following steps:
[0047] S101. Extracting a foreground frame and a background frame from the original video; the background frame is any frame between the foreground frame and the last saved frame and including the last saved frame; the last saved frame The difference between the frame number and the foreground frame ...
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The application discloses an extraction method of a video dynamic-static hybrid key frame. The extraction method comprises the following steps: extracting a background frame and a foreground frame from an original video; respectively performing grayscale conversion, masking processing and zooming processing on the extracted foreground frame and the background frame; counting the amount of the motion pixel, and judging whether the foreground frame is the motion frame; saving a serial number of the foreground frame if the foreground frame is the motion frame; or taking the frame with the staticframe interval number set after the formerly saved frame serial number as the static frame and saving the frame serial number. The compressed video information of the motion frame and the static frame(abandoning other frames) is respectively extracted by adopting different frame intervals, the extraction of the motion frame cannot lose the key dynamic information, and the extraction of the staticframe can improve the integrity and reliability of the information saving, thereby preventing key information from missing; the whole extraction method is simple and efficient, in particular, the efficiency can be greatly improved and the storage space can be reduced through the zooming and masking technology.
Description
technical field [0001] The invention relates to the field of computer technology, in particular to a method for extracting video dynamic and static mixed key frames. Background technique [0002] In today's era, video surveillance is ubiquitous. However, massive video is not only not conducive to storage, transmission and copying, but also more difficult to extract valuable information from it. [0003] At present, there are many application scenarios that require long-term storage of video. For example, construction monitoring video needs to provide key information for engineering audit and supervision, and it is necessary to provide necessary proof materials when disputes occur in engineering projects. [0004] Considering that many surveillance videos have a large number of time segments with less useful information, if these time segments can be automatically identified and filtered out, the video storage space can be greatly saved and the time for personnel to view the...
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IPC IPC(8): H04N5/915H04N7/18
Inventor 钱基业侯兴哲张先树胡晓锐陈耀刁晓波籍勇亮宫林吴念
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST