Method and system for realizing video region-of-interest intelligent coding in dynamic scene

Abstract

The invention provides a method and a system for realizing video region-of-interest intelligent coding in a dynamic scene. The method comprises the following steps: acquiring batch pictures of video images; splicing the pictures to obtain a panoramic picture; analyzing the plurality of panoramic pictures, and establishing a foreground area model of the panoramic pictures; comparing the picture with the foreground area model to determine a foreground area of the picture; determining code rates of the foreground area and the background area by combining the maximum bandwidth according to the size ratio of the foreground area to the picture; and encoding the picture according to the determined code rate. By comparing the picture with the corresponding foreground area model in real time, the foreground area of the marked video image can be automatically identified, and then the intelligent coding technology of the interested area is used for coding, so that the camera with the changed shooting position and angle can obtain the optimal image quality under the limited bandwidth; when the technical scheme is applied to a video monitoring system, a large amount of computing work is placedat the rear end, a CPU and power consumption resources of the camera are saved, and the design and manufacturing cost of the camera is reduced.

Description

technical field [0001] The invention relates to the technical field of video image information processing, in particular to a method and system for realizing intelligent encoding of a video region of interest in a dynamic scene. Background technique [0002] With the popularity of high-definition video technology and a large number of applications of video surveillance systems, the demand for high-bandwidth traffic is increasing. Although the video coding standard H.264 introduced by ITU-T has a relatively high compression ratio at present, it is often difficult to meet the bandwidth of more than 10 Mbps required by high-definition video. [0003] Region Of Interest (ROI) intelligent coding technology is a kind of intelligent video coding technology, which divides the video picture into the region of interest (also called the foreground region) and the background region, and adopts high quality and low compression for the foreground region. The background area is encoded wi...

AI Technical Summary

Problems solved by technology

ROI intelligent coding technology is more effective for static scenes with fixed pictures (that is, the position and angle of the camera do not change). Intelligent coding technology is powerless for dynamic scenes, especially in the shooting process of PTZ cruise camera and aerial camera, the content of the video picture is changing as a whole, ROI intelligent coding technology can hardly bring benefits

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