Title:
IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/187412
Kind Code:
A1
Abstract:
[PROBLEM] To provide an image processing device and an image processing method. [SOLUTION] An image processing device comprising: a decoding unit which decodes an encoded stream and generates a decoded image; a determining unit which determines whether or not a deblocking filter for color difference components of the decoded image needs to be applied to a block boundary of the decoded image on the basis of the boundary strength calculated using color difference parameters related to color differences; and a filtering unit which applies the deblocking filter to the color difference components of pixels positioned in the vicinity of the block boundary on the basis of the results determining whether or not the deblocking filter needs to be applied.
Inventors:
IKEDA MASARU (JP)
Application Number:
PCT/JP2018/047039
Publication Date:
October 03, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N19/117; H04N19/157; H04N19/176; H04N19/186; H04N19/82; H04N19/86
Foreign References:
| JP2017523677A | 2017-08-17 |
Other References:
QIAN HUANG , LICHEN AN , XUN GUO , SHAMIM LEI : "CE10 Subtest 1: Chroma Deblocking Filter", COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 , no. H0310, 10 February 2012 (2012-02-10), San Jose US , pages 1 - 5, XP030111337
SEUNG-HWAN KIM , JIE ZHAO , MIRSA KIRAN , ANDREW SEGALL : "Improvement of chroma deblocking filter", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. D0108, 21 October 2016 (2016-10-21), pages 1 - 6, XP030150352
OKUBO SAKAE, ET AL.: "H.265/HEVC Textbook, First Edition", 21 October 2013, IMPRESS CORPORATION, article "6.1 Deblocking filter", pages: 150 - 157, XP009516973
CHIH-WEI HSU , YU-WEN HUANG , SHAMIM LEI : "CE12.3.2: Reducing pixel line buffers by modifying DF for horizontal LCU boundaries", JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 , no. G228, 30 November 2011 (2011-11-30), pages 1 - 7, XP030110212
MASARU IKEDA , TERUHIKO SUZUKI: "CE12 Subtest3: deblocking vertical tap reduction for line buffer based on JCTVC-F215", JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16, no. G257, 30 November 2011 (2011-11-30), pages 1 - 5, XP030110241
J. CHENE. ALSHINAG. J. SULLIVANJ.-R. OHMJ. BOYCE: "Algorithm Description of Joint Exploration Test Model (JEM7", JVET-G1001, JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 7TH MEETING, 13 July 2017 (2017-07-13)
SEUNG-HWAN KIMJIE ZHAOMISRA KIRANANDREW SEGALL: "Improvement of chroma deblocking filter", JVET-D0108, JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 4TH MEETING, 15 October 2016 (2016-10-15)
"Advanced video coding for generic audiovisual services", RECOMMENDATION ITU-T H.264, April 2017 (2017-04-01)
"High efficiency video coding", RECOMMENDATION ITU-T H.265, December 2016 (2016-12-01)
See also references of EP 3780602A4
SEUNG-HWAN KIM , JIE ZHAO , MIRSA KIRAN , ANDREW SEGALL : "Improvement of chroma deblocking filter", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. D0108, 21 October 2016 (2016-10-21), pages 1 - 6, XP030150352
OKUBO SAKAE, ET AL.: "H.265/HEVC Textbook, First Edition", 21 October 2013, IMPRESS CORPORATION, article "6.1 Deblocking filter", pages: 150 - 157, XP009516973
CHIH-WEI HSU , YU-WEN HUANG , SHAMIM LEI : "CE12.3.2: Reducing pixel line buffers by modifying DF for horizontal LCU boundaries", JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 , no. G228, 30 November 2011 (2011-11-30), pages 1 - 7, XP030110212
MASARU IKEDA , TERUHIKO SUZUKI: "CE12 Subtest3: deblocking vertical tap reduction for line buffer based on JCTVC-F215", JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16, no. G257, 30 November 2011 (2011-11-30), pages 1 - 5, XP030110241
J. CHENE. ALSHINAG. J. SULLIVANJ.-R. OHMJ. BOYCE: "Algorithm Description of Joint Exploration Test Model (JEM7", JVET-G1001, JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 7TH MEETING, 13 July 2017 (2017-07-13)
SEUNG-HWAN KIMJIE ZHAOMISRA KIRANANDREW SEGALL: "Improvement of chroma deblocking filter", JVET-D0108, JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 4TH MEETING, 15 October 2016 (2016-10-15)
"Advanced video coding for generic audiovisual services", RECOMMENDATION ITU-T H.264, April 2017 (2017-04-01)
"High efficiency video coding", RECOMMENDATION ITU-T H.265, December 2016 (2016-12-01)
See also references of EP 3780602A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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