Accuracy enhancement in intra- And inter-frame example search for lossless video coding

Koji Nemoto, Yusuke Kameda, Ichiro Matsuda, Susumu Itoh, Kyohei Unno, Sei Naito

研究成果: Conference contribution査読

1 被引用数 (Scopus)

抄録

We previously proposed a lossless video coding method based on intra/inter-frame example search and probability model optimization. In this method, several examples, i.e. a set of pels whose neighborhoods are similar to a local texture of the target pel to be encoded, are searched from already encoded areas of the current and previous frames with integer pel accuracy. Probability distribution of an image value at the target pel is then modeled as weighted sum of the Gaussian functions whose peaked positions are given by the individual examples. Furthermore, model parameters that control shapes of the Gaussian functions are numerically optimized so that the resulting coding rate can be a minimum. In this paper, the above example search process is enhanced to allow fractional-pel positions for more accurate probability modeling.

本文言語English
ホスト出版物のタイトルInternational Workshop on Advanced Imaging Technology, IWAIT 2020
編集者Phooi Yee Lau, Mohammad Shobri
出版社SPIE
ISBN(電子版)9781510638358
DOI
出版ステータスPublished - 2020
イベントInternational Workshop on Advanced Imaging Technology, IWAIT 2020 - Yogyakarta, Indonesia
継続期間: 5 1 20207 1 2020

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
11515
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Conference

ConferenceInternational Workshop on Advanced Imaging Technology, IWAIT 2020
国/地域Indonesia
CityYogyakarta
Period5/01/207/01/20

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