Quick surveillance video playback technique

A surveillance video, fast technology, applied in the field of fast playback of surveillance video based on continuous two-frame differential algorithm, can solve problems such as frame loss, and achieve the effect of improving efficiency and fast playback

Inactive Publication Date: 2014-12-03
南京恒誉名翔科技有限公司
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AI Technical Summary

Problems solved by technology

The traditional fast video playback technology is fast forward in the ordinary sense. For fast decoding, the video frames in the image are skipped to realize the playback of the original video at a speed several times or even dozens of times higher than the normal speed, usually losing frames, and, when the playback speed is increased, the frame drop phenomenon will be more serious

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Embodiment Construction

[0018] The principle of the present invention and the specific connection relationship are described in more detail below in conjunction with the accompanying drawings:

[0019] combine figure 1 , figure 1 It is the flow chart of image acquisition card signal acquisition of the present invention; the acquisition of monitoring video is realized through the image acquisition card, and as the interface between the image acquisition part and the image processing part, the image sampling and quantization are converted into digital images and input and stored to the frame memory; the video information collected by the camera is transferred to the computer through the image acquisition card, and then the captured video can be processed; the image acquisition card can simultaneously save and play the video information while capturing; video acquisition The card provides hardware compression for full-screen video capture at 30 frames per second.

[0020] figure 2 is the ba...

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Abstract

The invention relates to a quick surveillance video playback technique. A surveillance video is acquired through devices such as a DS-4004HC image acquisition card and a camera, decoded image data are converted from YUV space to RGB space, and then images are filtered and denoised. According to the design, frame differences of the acquired images are binarized and morphologically filtered through a continuous two-frame difference algorithm, image frames where moving objects exist are determined through corrosion, expansion, open operation and closed operation of morphological filtering, frame numbers are marked, the surveillance video is quickly played back, different threshold values are set, and a quick playback experiment is conducted on the surveillance video.

Description

Technical field [0001] The invention relates to a monitoring video fast playback technology, in particular to a monitoring video fast playback technology based on a continuous two-frame difference algorithm. Background technique [0002] As an information transmission medium in the new era, video has been widely used in many fields of modern life, and has become an irreplaceable information carrier in social life due to its richness and subjectivity integrating graphics, text, sound and color. After entering the 21st century, with the rapid development of sensor technology, computer technology, electronic technology and information processing technology, video surveillance technology, one of its important applications, has become increasingly mature and widely used in various fields of life. It has become an indispensable and important part of the security technology system. Due to the broad application prospect and social value of video surveillance system, it has aroused ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/76
Inventor 费浚纯
Owner 南京恒誉名翔科技有限公司
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