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A video encoding method and device

A video coding and video frame technology, applied in the field of video coding, can solve the problems of reducing the quality of non-most interesting regions and not substantially improving the quality of interested regions

Active Publication Date: 2018-06-26
ZHEJIANG DAHUA TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] where QP h is the basic QP of the current frame, it can be seen that in the prior art, the QP of the most interesting part is not reduced, but the QP of the rest of the area is increased, thereby reducing the quality of the non-most interesting area, so that the subjective quality of the interested area Relatively good, but does not substantially improve the quality of the region of interest

Method used

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  • A video encoding method and device
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  • A video encoding method and device

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Embodiment Construction

[0092] An embodiment of the present invention provides a video coding scheme. In this scheme, multiple regions of interest are set in the video frame, and a level value is set for each region of interest. Adjust, so as to meet the requirements of the coding quality of each level area; then according to the actual coding rate of the macroblock in the video frame and the complexity of the coding mode, the QP of the macroblock in the video frame is adjusted for the second time, so that The QP of the macroblocks in the regions of interest at each level is more in line with the attribute requirements of the video itself; finally, according to the second adjusted QP of each macroblock, the video frame is encoded to obtain the reconstructed video frame. The method can simply and efficiently adjust the quality of each region of interest in the video, improve the quality of the region of interest at each level to varying degrees, and ensure that the quality of the entire video frame wi...

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Abstract

The invention discloses a video coding method and device. The method comprises the following steps of setting a plurality of regions of interest in a video frame and setting a level value for each region of interest; carrying out first adjustment on quantization parameters QP of macro blocks at the critical points of the adjacent regions of interest with different level values; carrying out second adjustment on the QPs of the macro blocks in the video frame according to the actual encoding rate of the macro blocks in the video frame and the complexity of the encoding mode; and encoding the video frame according to the QP of each macro block after second adjustment to obtain a reconstructed video frame. According to the method, the quality of each region of interest in the video can be simply and effectively adjusted, the quality of the region of interest at each level is improved in various degree, and the quality of the whole video frame cannot be fuzzy.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a video coding method and device. Background technique [0002] In order to improve the compression efficiency of video coding and at the same time ensure that video coding can adapt to high-definition TV signals, such as satellite, ground transmission and storage of high-quality video signals, on the basis of H.264 / AVC (Advanced Video Coding, Advanced Video Coding) , Video Coding Experts Group (Video Coding Experts Group) and ISO (International Standardization Organization, International Standardization Organization) / IEC (International Electro technical Commission, International Electrotechnical Commission) MEPG (Moving Pictures Experts Group / Motion Pictures Experts Group, Motion Picture Experts Group) The committee jointly established a video coding joint organization, and formulated HEVC (High Efficiency Video Coding, high-definition video coding standard), that i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/167H04N19/176H04N19/146
CPCH04N19/146H04N19/167H04N19/176
Inventor 刘星宇陆金刚陈琦杨银昌
Owner ZHEJIANG DAHUA TECH CO LTD
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