A multi-chroma format cascaded coding method for full-chroma image in AVS2

A multi-chroma format cascaded coding method for full-chroma image in AVS2

In the second generation of audio video coding standard (AVS2),a multi-chroma format cascaded coding method (MCFCC) for full-chroma (4:4:4 sampling format) images coding was proposed.The MCFCC algorithm firstly converts the 4:4:4 sampling format image into 4:2:0 sampling format image,then the 4:2:0...

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Bibliographic Details
Main Authors: Liping ZHAO, Tao LIN, Kailun ZHOU, Keli HU, Chunmei LIN
Format: Article
Language:zho
Published: Beijing Xintong Media Co., Ltd 2018-04-01
Series:Dianxin kexue
Subjects:
image coding
AVS2
full-chroma
chroma subsampling
in-loop filtering
Online Access:http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2018122/
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Summary:In the second generation of audio video coding standard (AVS2),a multi-chroma format cascaded coding method (MCFCC) for full-chroma (4:4:4 sampling format) images coding was proposed.The MCFCC algorithm firstly converts the 4:4:4 sampling format image into 4:2:0 sampling format image,then the 4:2:0 sampling format image was processed by 4:2:0 sampling format intra prediction,transform,quantization,inverse quantization,inverse transform,entropy coding and a weighted 4:4:4 sampling format distortion calculation method in the rate-distortion optimization process,finally 4:4:4 sampling format in-loop filtering and offset algorithms were applied to the 4:4:4 sampling format image after up sampling.The experimental results show that,for full-chroma natural images,the MCFCC algorithm achieves higher coding efficiency at very low additional encoding complexity and very low additional design and implementation cost.
ISSN:1000-0801

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