Title:
画像符号化装置、画像符号化方法及びプログラム、画像復号装置、画像復号方法及びプログラム
Document Type and Number:
Japanese Patent JP5875236
Kind Code:
B2
Abstract:
An image processing apparatus includes a division unit configured to divide an input image into a plurality of subblocks subjected to quantization control a subblock quantization parameter calculation unit configured to calculate a quantization parameter of each of the subblocks, a basic block quantization parameter calculation unit configured to set a basic block including at least two subblocks and to calculate a quantization parameter of the basic block, a difference value calculation unit configured to calculate a difference value between the quantization parameter of the basic block and the quantization parameter of each subblock included in the basic block, and a difference value coding unit configured to code the difference value.
Inventors:
Mitsuru Maeda
Application Number:
JP2011051267A
Publication Date:
March 02, 2016
Filing Date:
March 09, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
H04N19/00; H04N19/42; H04N19/119; H04N19/126; H04N19/136; H04N19/14; H04N19/176; H04N19/423; H04N19/46; H04N19/463; H04N19/503; H04N19/593; H04N19/60; H04N19/61; H04N19/625; H04N19/70; H04N19/91; H04N19/96
Foreign References:
| WO2009105732A1 | ||||
| WO2009158113A1 |
Other References:
Madhukar Budagavi(外1名),Delta QP signaling at sub-LCU level,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-D038,米国,ITU-T,2011年 1月28日,p.1-5
Kazushi Sato,On LBS and Quantization,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-D308r1,米国,ITU-T,2011年 1月28日,p.1-12
L. Dong(外2名),CU Adaptive Quantization Syntax Change for Better Decoder pipelining,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-D258,米国,ITU-T,2011年 1月28日,p.1-3
Kazushi Sato,On LBS and Quantization,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-D308r1,米国,ITU-T,2011年 1月28日,p.1-12
L. Dong(外2名),CU Adaptive Quantization Syntax Change for Better Decoder pipelining,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 JCTVC-D258,米国,ITU-T,2011年 1月28日,p.1-3
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa