Title:
IMAGE CODING APPARATUS, IMAGE CODING METHOD, STORAGE MEDIUM, IMAGE DECODING APPARATUS, IMAGE DECODING METHOD, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2016/084317
Kind Code:
A1
Abstract:
An image decoding apparatus decodes a bit stream generated by coding an image and decodes coded data included in the bit stream and corresponding to a target block to be decoded in the image. The apparatus includes a first determining unit configured to determine whether the target block is prediction-coded or palette-coded; a second determining unit configured to determine whether or not a pixel in the target block is escape-coded if the first determining unit determines that the target block is palette-coded; and a first decoding unit configured to decode the target block by using a second quantization parameter different from a first quantization parameter if the second determining unit determines that the pixel is escape-coded. The first quantization parameter is used to decode the coded data in a case where the first determining unit determines that the target block is prediction-coded.
Inventors:
MAEDA MITSURU (JP)
SHIMA MASATO (JP)
SHIMA MASATO (JP)
Application Number:
PCT/JP2015/005597
Publication Date:
June 02, 2016
Filing Date:
November 09, 2015
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H04N19/146; H04N19/124; H04N19/157; H04N19/176; H04N19/182; H04N19/61; H04N19/70
Domestic Patent References:
| WO2014165784A1 | 2014-10-09 | |||
| WO2014165784A1 | 2014-10-09 |
Other References:
SOLE J ET AL: "Non-CE6: Delta QP signalling for palette", 19. JCT-VC MEETING; 17-10-2014 - 24-10-2014; STRASBOURG; (JOINT COLLABORATIVE TEAM ON VIDEO CODING OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ); URL: HTTP://WFTP3.ITU.INT/AV-ARCH/JCTVC-SITE/,, no. JCTVC-S0043-r2, 22 October 2014 (2014-10-22), XP030116772
"HEVC Screen Content Coding Test Model 2 (SCM 2)", 109. MPEG MEETING;7-7-2014 - 11-7-2014; SAPPORO; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11),, no. N14706, 20 October 2014 (2014-10-20), XP030021442
"HEVC RExt Test Model 7", 108. MPEG MEETING;31-3-2014 - 4-4-2014; VALENCIA; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11),, no. N14418, 16 June 2014 (2014-06-16), XP030021154
"HEVC Screen Content Coding Test Model 2 (SCM 2)", 109. MPEG MEETING;7-7-2014 - 11-7-2014; SAPPORO; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11),, no. N14706, 20 October 2014 (2014-10-20), XP030021442
"HEVC RExt Test Model 7", 108. MPEG MEETING;31-3-2014 - 4-4-2014; VALENCIA; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11),, no. N14418, 16 June 2014 (2014-06-16), XP030021154
Attorney, Agent or Firm:
ABE, Takuma et al. (30-2Shimomaruko 3-chome, Ohta-k, Tokyo 01, JP)
Download PDF: