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1. (WO2018177254) IMAGE CODING/DECODING METHOD, VIDEO CODER/DECODER, AND VIDEO CODING AND DECODING SYSTEM

Pub. No.:    WO/2018/177254    International Application No.:    PCT/CN2018/080512
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Mar 27 01:59:59 CEST 2018
IPC: H04N 19/96
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: ZHAO, Yin
赵寅
YANG, Haitao
杨海涛
GAO, Shan
高山
Title: IMAGE CODING/DECODING METHOD, VIDEO CODER/DECODER, AND VIDEO CODING AND DECODING SYSTEM
Abstract:
The present application relates to video coding and decoding technology, and discloses an image decoding method and a video decoder, an image coding method and a video coder, and a video coding and decoding system. The image decoding method comprises: acquiring information about a first leaf node resulting from division of a coding tree unit as a root node; if the information about the first leaf node meets a division condition, acquiring division instruction information for the first leaf node; if the division instruction information for the first leaf node instructs a division of the first leaf node, acquiring coding information corresponding to a second leaf node resulting from division of the first leaf node as a root node; and generating, according to the coding information corresponding to the second leaf node, a reconstructed image corresponding to the second leaf node. According to the method of the present application, a coding unit with a relatively large size can be further divided without changing the original maximum limit on hierarchical division, thus achieving an effective compromise between coding efficiency and coding complexity.