Title:
IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING PROGRAM, IMAGE DECODING DEVICE, IMAGE DECODING METHOD AND IMAGE DECODING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/105148
Kind Code:
A1
Abstract:
The present invention provides an image coding device that divides an image into blocks and performs coding in units of the divided blocks. A block division unit (101) generates a block to be coded by recursively dividing an image into rectangles with a predetermined size. A coded bit string generation unit (105) codes block division information of the block to be coded. The block division unit (101) includes a division-into-quarters part for generating four blocks by horizontally and vertically dividing an object block in recursive division into quarters, and a division-into-halves part for generating two blocks by horizontally or vertically dividing the object block in recursive division into halves. If a previous recursive division is division into halves, the division-into-halves part prohibits an object block in a current recursive division from being divided in the same direction as a direction in which the block is divided in the previous recursive division.
Inventors:
FUKUSHIMA SHIGERU (JP)
Application Number:
PCT/JP2017/021783
Publication Date:
June 14, 2018
Filing Date:
June 13, 2017
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
International Classes:
H04N19/119; H04N19/136; H04N19/176; H04N19/196; H04N19/70; H04N19/96
Domestic Patent References:
| WO2016091161A1 | 2016-06-16 | |||
| WO2012101781A1 | 2012-08-02 | |||
| WO2016031253A1 | 2016-03-03 | |||
| WO2017008678A1 | 2017-01-19 |
Foreign References:
| JP2013543316A | 2013-11-28 | |||
| JP2015516769A | 2015-06-11 | |||
| JP2013098711A | 2013-05-20 |
Other References:
ZHAO WANG ET AL.: "Local-Constrained Quadtree Plus Binary Tree Block Partition Structure for Enhanced Video Coding", VISUAL COMMUNICATIONS AND IMAGE PROCESSING (VCIP) , 2016, 27 November 2016 (2016-11-27), pages 1 - 4, XP055472947
JICHENG AN ET AL.: "Quadtree plus binary tree structure integration with JEM tools", JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 2ND MEETING, 20 February 2016 (2016-02-20), San Diego, USA, XP030150012, Retrieved from the Internet
F. LE LEANNEC ET AL.: "Asymmetric Coding Units in QTBT", 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), Chengdu, CN, XP055417365
See also references of EP 3554073A4
JICHENG AN ET AL.: "Quadtree plus binary tree structure integration with JEM tools", JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 2ND MEETING, 20 February 2016 (2016-02-20), San Diego, USA, XP030150012, Retrieved from the Internet
F. LE LEANNEC ET AL.: "Asymmetric Coding Units in QTBT", 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), Chengdu, CN, XP055417365
See also references of EP 3554073A4
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
Download PDF: