Title:
IMAGE PROCESSING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/039650
Kind Code:
A1
Abstract:
The present disclosure relates to an image processing device and method which make it possible to suppress an increase in coding and decoding load. According to the image processing device and method, the maximum transform block size of a lossless coding mode is set to the same size as a transform coefficient group corresponding to a maximum transform block size of a lossy coding mode. In one example, according to the image processing device and method, the maximum transform block size of the lossless coding mode is set to 32x32. In another example, according to the image processing device and method, on the basis of a transform quantization bypass mode enable flag (transquant_bypass_enable_flag), which is flag information indicating whether a mode for skipping the coefficient transform and the quantization is enabled, the maximum transform block size of the lossless coding mode is set to 32x32.
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Inventors:
TSUKUBA TAKESHI (JP)
Application Number:
PCT/JP2020/031688
Publication Date:
March 04, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N19/119; H04N19/157; H04N19/176; H04N19/70
Foreign References:
| JP2016532341A | 2016-10-13 |
Other References:
"High efficiency video coding, Recommendation ITU-T H.265, H.265 (04/2013", ITU-T STANDARD, April 2013 (2013-04-01), pages 46 - 52, XP017578151
BROSS, BENJAMIN, CHEN, JIANLE AND LIU, SHAN: "Versatile Video Coding (Draft 6), Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, JVET-02001-vE (version 14", 15TH MEETING: GOTHENBURG, pages 37 - 40, XP055747660
JANG, HYEONG-MUN ET AL.: "Comments on transform quantization bypassed mode", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SC 16 WP 3 AND ISO/IEC JTC 1/SC 29/ WC 11, JVET-00584, 15TH MEETING: GOTHENBURG, July 2019 (2019-07-01), pages 1 - 22
MA, TSUNGCHUAN ET AL.: "Lossless coding for VVC", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SC 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, JVET-01061, 15TH MEETING: GOTHENBURG, July 2019 (2019-07-01), pages 1 - 17
BROSS, BENJAMIN, CHEN, JIANLE AND LIU, SHAN: "Versatile Video Coding (Draft 6), Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, JVET-02001-vE (version 14", 15TH MEETING: GOTHENBURG, pages 37 - 40, XP055747660
JANG, HYEONG-MUN ET AL.: "Comments on transform quantization bypassed mode", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SC 16 WP 3 AND ISO/IEC JTC 1/SC 29/ WC 11, JVET-00584, 15TH MEETING: GOTHENBURG, July 2019 (2019-07-01), pages 1 - 22
MA, TSUNGCHUAN ET AL.: "Lossless coding for VVC", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SC 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, JVET-01061, 15TH MEETING: GOTHENBURG, July 2019 (2019-07-01), pages 1 - 17
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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