Method for implementing multichannel combined interested area video coding and transmission

Abstract

The invention relates to a region-of-interest video encoding and transmitting method which realize multi-channel combination, and belongs to the technical field of the video encoding and transmission. The method adopts the following steps: step one, space down sampling is performed to the panoramic video with high resolution collected by a panoramic camera, and then encoding is performed after video with low resolution is obtained; step two, region-of-interest detection is performed to video with high definition collected by a visible-light camera, and self-adaptive switching is performed to the two channels of video, namely, downsized video and down-sampled video, according to the area and the position of the region-of-interest detection; step three, an an infrared thermal imager is used for performing detection and tracking to interest targets, encoding infrared region-of-interest video with primary low resolution, and adjusting quantization parameter to realize code rate control; step four, the priority of the three channels of video is set, protecting channel encoding for non-uniform channel is performed according to the priority, and the code is multiplexed into one channel of code stream to be sent to the channel for transmission, and code rate distribution of the channel bandwidth is performed according to the priority. The method guarantees precise detection and high quality encoding to the region of interest when ensuring global detection on the complete scene.

Description

technical field [0001] The present invention relates to a method in the technical field of video coding and transmission, in particular to a method for realizing multi-channel joint video coding and transmission of a region of interest. Background technique [0002] With the rapid development of international digital video coding technology, a variety of video information processing and transmission systems have emerged. The most important thing in the video communication system is to adjust the code rate control method of video coding according to the channel bandwidth, so as to obtain the best performance under the corresponding channel bandwidth. Good visual quality. According to the bit rate characteristics of compressed video, there are two bit rate control video coding methods: fixed bit rate and variable bit rate. Fixed bit rate video coding is widely used in video applications such as digital TV and video conferencing with fixed channel bandwidth. However, due to th...

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Problems solved by technology

However, the disadvantage of this method is that it does not explain how to select or multiplex the two video streams of the panoramic basic encoder and ROI encoder. When the channel bandwidth changes, only the constant quality of the video in the region of interest can be achieved, and the panorama cannot be taken into account. Adaptively adjust the encoding and transmission scheme to the video of the region of interest

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