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CU significance-based QP selection algorithm

A selection algorithm, a remarkable technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve problems such as huge coding complexity, and achieve the effect of high compression quality

Active Publication Date: 2019-03-08
深圳市北辰星途科技有限公司
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Problems solved by technology

However, this improvement in compression performance also brings a huge coding complexity, which still needs further research and improvement

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  • CU significance-based QP selection algorithm
  • CU significance-based QP selection algorithm
  • CU significance-based QP selection algorithm

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0029] The embodiment of the present invention discloses a QP selection algorithm based on CU significance, such as figure 1 shown, including the following steps:

[0030] S10: Select a video frame picture, divide the video frame picture into a plurality of CU blocks, and calculate the significance value of each CU block;

[0031] S20: calculating the average significance value of all CU blocks in S10;

[0032] S30: Dynamically adjust the QP value of t...

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Abstract

The invention discloses a CU significance-based QP selection algorithm. The CU significance-based QP selection algorithm comprises steps of selecting a video frame image, dividing the video frame image into multiple CU blocks, and calculating a significance value of each CU block; calculating an average significance value of all CU blocks in S10; and according to the significance value of each CUblock and an average significance value of all CU blocks in the selected video frame image, dynamically adjusting the QP value of the CU block, and acquiring a sensing QP value of each CU block. In the method, the QP corresponding to the CU is selected according to the significance value of the CU, so that the CU with higher significance can encode with smaller QP, and a highly significant regionhas higher compression quality.

Description

technical field [0001] The present invention relates to the technical field of video compression, in particular to a QP selection algorithm based on CU significance. Background technique [0002] At present, with the continuous development of video compression technology, high-quality, high-real-time video has become a development trend, which also promotes the rapid development of high-definition and ultra-high-definition video applications. At present, the new generation of video coding standard HEVC (High Efficiency Video Coding) retains the framework of traditional video coding, and adopts the new achievements of video compression technology research in recent years, so that its coding performance can basically reach twice that of H.264 / AVC standard. . However, this improvement in compression performance also brings huge coding complexity, which still needs further research and improvement. At the same time, with the improvement of video resolution and quality, modern ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/154H04N19/17H04N19/70
CPCH04N19/154H04N19/17H04N19/176H04N19/70
Inventor 祝世平刘畅
Owner 深圳市北辰星途科技有限公司
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