HEVC basic unit level code rate allocation method

A basic unit, bit rate allocation technology, applied in the field of video coding and decoding, can solve problems such as unreasonable bit rate allocation, achieve the effect of small coding distortion and improve rationality

Active Publication Date: 2015-02-04
FUCHUN COMM
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Problems solved by technology

[0024] The technical problem to be solved by the present invention is to provide a HEVC basic unit level code rate allocation method to solve the unreasonable code

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  • HEVC basic unit level code rate allocation method
  • HEVC basic unit level code rate allocation method
  • HEVC basic unit level code rate allocation method

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[0035] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0036] HEVC: English full spelling: High Efficiency Video Coding, is a new international video compression standard, which doubles the compression performance of the H.264 / AVC coding standard under the same visual quality.

[0037]Basic unit level: The basic coding unit in HEVC is the Coding Tree Unit (CTU). Unlike a fixed-size macroblock, the coding end can configure the size of the CTU. The CTU sizes allowed in HEVC include 16x16, 32x32, and 64x64 (both calculated as the luma block size), and the CTU is the basic unit of decoder processing.

[0038] Prediction residual: The prediction residual is the difference between the currently encoded original frame and the predicted value.

[0039] The most critical idea of ​​the present invention is: this method can b...

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Abstract

The invention discloses an HEVC basic unit level code rate allocation method, aiming at different video sequence features, during the code rate control process of HEVC video coded, the bit allocation is processed by difference normalization for the DC component and the texture component of the region for reducing the bit allocation in the texture region, raising code rate for the region being sensitive to the human eye, raising the coded rate-distortion performance. The designed code rate distribution method is applied to the other video coding standard.

Description

technical field [0001] The present invention relates to the field of video encoding and decoding, in particular to an HEVC basic unit-level coding rate allocation method. Background technique [0002] In video coding and transmission applications, the new generation of high-performance video coding standard H.265 / MPEG-HEVC (High Efficiency Video Coding) is a video coding joint venture established by two international standardization organizations, ISO-IEC / MPEG and ITU-T / VCEG. Developed by the development team (JCT-VC), HEVC can reduce the bit rate by half compared with H.264 / AVC at the same visual quality. [0003] As a new-generation video coding standard, HEVC still belongs to the hybrid coding framework of prediction and transformation. It also includes coding modules such as intra prediction, inter prediction, orthogonal transformation, quantization, filtering, and entropy coding. Careful optimization and improvement have been carried out. The HEVC standard encoding met...

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Application Information

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IPC IPC(8): H04N19/61H04N19/96
Inventor 缪品章郑明魁苏凯雄叶宇煌郑振英
Owner FUCHUN COMM
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