The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
A correlação entre canais é uma das redundâncias que precisa ser eliminada na codificação de vídeo. No mais recente padrão de codificação de vídeo H.266/VVC, os modos DM (Modo Direto) e CCLM (Modelo Linear de Componente Cruzado) foram introduzidos para reduzir a semelhança entre luminância e croma. No entanto, a correlação entre canais ainda é observada. Neste artigo, é proposto um novo algoritmo de predição entre canais, que utiliza o princípio de coloração para prever pixels cromáticos. Do ponto de vista da coloração, para a maioria dos quadros de vídeo de conteúdo natural, os três componentes Y, U e V sempre demonstram padrões de coloração semelhantes. Portanto, os componentes U e V podem ser previstos usando o padrão de coloração do componente Y. No algoritmo proposto, os coeficientes de correlação são obtidos de forma leve para descrever a relação de coloração entre o pixel atual e o pixel de referência no componente Y, e usados para prever pixels cromáticos. A posição ideal para as amostras de referência também é projetada. Com base na posição selecionada das amostras de referência, são definidos dois novos modos de previsão de croma. Os resultados do experimento mostram que, em comparação com o VTM 12.1, o algoritmo proposto tem uma média de -0.92% e -0.96% de melhoria na taxa BD para componentes U e V, para configurações All Intra (AI). Ao mesmo tempo, o aumento do tempo de codificação e do tempo de decodificação pode ser ignorado.
Zhi LIU
North China University of Technology
Jia CAO
North China University of Technology
Xiaohan GUAN
North China University of Technology
Mengmeng ZHANG
North China University of Technology,Beijing Polytechnic College
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Zhi LIU, Jia CAO, Xiaohan GUAN, Mengmeng ZHANG, "New VVC Chroma Prediction Modes Based on Coloring with Inter-Channel Correlation" in IEICE TRANSACTIONS on Information,
vol. E105-D, no. 10, pp. 1821-1824, October 2022, doi: 10.1587/transinf.2022EDL8010.
Abstract: Inter-channel correlation is one of the redundancy which need to be eliminated in video coding. In the latest video coding standard H.266/VVC, the DM (Direct Mode) and CCLM (Cross-component Linear Model) modes have been introduced to reduce the similarity between luminance and chroma. However, inter-channel correlation is still observed. In this paper, a new inter-channel prediction algorithm is proposed, which utilizes coloring principle to predict chroma pixels. From the coloring perspective, for most natural content video frames, the three components Y, U and V always demonstrate similar coloring pattern. Therefore, the U and V components can be predicted using the coloring pattern of the Y component. In the proposed algorithm, correlation coefficients are obtained in a lightweight way to describe the coloring relationship between current pixel and reference pixel in Y component, and used to predict chroma pixels. The optimal position for the reference samples is also designed. Base on the selected position of the reference samples, two new chroma prediction modes are defined. Experiment results show that, compared with VTM 12.1, the proposed algorithm has an average of -0.92% and -0.96% BD-rate improvement for U and V components, for All Intra (AI) configurations. At the same time, the increased encoding time and decoding time can be ignored.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2022EDL8010/_p
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@ARTICLE{e105-d_10_1821,
author={Zhi LIU, Jia CAO, Xiaohan GUAN, Mengmeng ZHANG, },
journal={IEICE TRANSACTIONS on Information},
title={New VVC Chroma Prediction Modes Based on Coloring with Inter-Channel Correlation},
year={2022},
volume={E105-D},
number={10},
pages={1821-1824},
abstract={Inter-channel correlation is one of the redundancy which need to be eliminated in video coding. In the latest video coding standard H.266/VVC, the DM (Direct Mode) and CCLM (Cross-component Linear Model) modes have been introduced to reduce the similarity between luminance and chroma. However, inter-channel correlation is still observed. In this paper, a new inter-channel prediction algorithm is proposed, which utilizes coloring principle to predict chroma pixels. From the coloring perspective, for most natural content video frames, the three components Y, U and V always demonstrate similar coloring pattern. Therefore, the U and V components can be predicted using the coloring pattern of the Y component. In the proposed algorithm, correlation coefficients are obtained in a lightweight way to describe the coloring relationship between current pixel and reference pixel in Y component, and used to predict chroma pixels. The optimal position for the reference samples is also designed. Base on the selected position of the reference samples, two new chroma prediction modes are defined. Experiment results show that, compared with VTM 12.1, the proposed algorithm has an average of -0.92% and -0.96% BD-rate improvement for U and V components, for All Intra (AI) configurations. At the same time, the increased encoding time and decoding time can be ignored.},
keywords={},
doi={10.1587/transinf.2022EDL8010},
ISSN={1745-1361},
month={October},}
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TY - JOUR
TI - New VVC Chroma Prediction Modes Based on Coloring with Inter-Channel Correlation
T2 - IEICE TRANSACTIONS on Information
SP - 1821
EP - 1824
AU - Zhi LIU
AU - Jia CAO
AU - Xiaohan GUAN
AU - Mengmeng ZHANG
PY - 2022
DO - 10.1587/transinf.2022EDL8010
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E105-D
IS - 10
JA - IEICE TRANSACTIONS on Information
Y1 - October 2022
AB - Inter-channel correlation is one of the redundancy which need to be eliminated in video coding. In the latest video coding standard H.266/VVC, the DM (Direct Mode) and CCLM (Cross-component Linear Model) modes have been introduced to reduce the similarity between luminance and chroma. However, inter-channel correlation is still observed. In this paper, a new inter-channel prediction algorithm is proposed, which utilizes coloring principle to predict chroma pixels. From the coloring perspective, for most natural content video frames, the three components Y, U and V always demonstrate similar coloring pattern. Therefore, the U and V components can be predicted using the coloring pattern of the Y component. In the proposed algorithm, correlation coefficients are obtained in a lightweight way to describe the coloring relationship between current pixel and reference pixel in Y component, and used to predict chroma pixels. The optimal position for the reference samples is also designed. Base on the selected position of the reference samples, two new chroma prediction modes are defined. Experiment results show that, compared with VTM 12.1, the proposed algorithm has an average of -0.92% and -0.96% BD-rate improvement for U and V components, for All Intra (AI) configurations. At the same time, the increased encoding time and decoding time can be ignored.
ER -