Title:
IMAGE PROCESSING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2017/195667
Kind Code:
A1
Abstract:
The present disclosure pertains to an image processing device and method which make it possible to suppress a decrease in encoding efficiency. When skipping a primary conversion, which is the conversion processing for a predictive residual, which is the difference between an image and the predictive image thereof, and skipping a secondary conversion, which is the conversion processing for a primary conversion coefficient obtained by subjecting the predictive residual to the primary conversion, a switch also skips a bandwidth restriction of a secondary conversion coefficient obtained by subjecting the primary conversion coefficient to the secondary conversion. This disclosure is applicable, for example, to an image processing device, an image encoding device, an image decoding device, or the like.
Inventors:
TSUKUBA TAKESHI (JP)
Application Number:
PCT/JP2017/016988
Publication Date:
November 16, 2017
Filing Date:
April 28, 2017
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N19/132; H04N19/157; H04N19/176
Domestic Patent References:
| WO2015183375A2 | 2015-12-03 |
Other References:
JIANLE CHEN ET AL.: "Algorithm Description of Joint Exploration Test Model 2, Joint Video Exploration Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11", JVET-B1001_V3, March 2016 (2016-03-01), San Diego , USA, pages 1 - 30, XP009510215
MARTA MRAK ET AL.: "Transform skip mode", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG 16 WP3, November 2011 (2011-11-01), Geneva, CH, pages 1 - 13, XP 030110559
"SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services - Coding of moving video High efficiency video coding, Recommendation ITU-T H.265", H.265(04/2013), ITU-T, April 2013 (2013-04-01), pages 51 - 52, 91-93, 141-142, XP 055227899
X. ZHAO ET AL.: "TU-level non-separable secondary transform, Joint Video Exploration Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11", JVET-B0059, February 2016 (2016-02-01), San Diego , USA, pages 1 - 5, XP 030150066
TAKESHI TSUKUBA ET AL.: "RExt coding tools support on JEM, Joint Video Exploration Team (JVET) of ITU-T SG 16 WP 3", JVET-C0046 R1, May 2016 (2016-05-01), Geneva, CH, pages 1 - 6, XP 030150140
See also references of EP 3457692A4
MARTA MRAK ET AL.: "Transform skip mode", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG 16 WP3, November 2011 (2011-11-01), Geneva, CH, pages 1 - 13, XP 030110559
"SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services - Coding of moving video High efficiency video coding, Recommendation ITU-T H.265", H.265(04/2013), ITU-T, April 2013 (2013-04-01), pages 51 - 52, 91-93, 141-142, XP 055227899
X. ZHAO ET AL.: "TU-level non-separable secondary transform, Joint Video Exploration Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11", JVET-B0059, February 2016 (2016-02-01), San Diego , USA, pages 1 - 5, XP 030150066
TAKESHI TSUKUBA ET AL.: "RExt coding tools support on JEM, Joint Video Exploration Team (JVET) of ITU-T SG 16 WP 3", JVET-C0046 R1, May 2016 (2016-05-01), Geneva, CH, pages 1 - 6, XP 030150140
See also references of EP 3457692A4
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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