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1. CN106464905 - Method of block vector prediction for intra block copy mode coding

Office
China
Application Number 201580023620.X
Application Date 05.05.2015
Publication Number 106464905
Publication Date 22.02.2017
Grant Number 106464905
Grant Date 07.06.2019
Publication Kind B
IPC
H04N 19/593
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
H04N 19/52
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
503involving temporal prediction
51Motion estimation or motion compensation
513Processing of motion vectors
517by encoding
52by predictive encoding
CPC
H04N 19/52
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
503involving temporal prediction
51Motion estimation or motion compensation
513Processing of motion vectors
517by encoding
52by predictive encoding
H04N 19/593
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
H04N 19/11
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
11among a plurality of spatial predictive coding modes
H04N 19/176
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
H04N 19/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
44Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
Applicants MEDIATEK SINGAPORE PTE LTD.
寰发股份有限公司
Inventors XU XIAOZHONG
许晓中
LIU SHAN
刘杉
CHUANG TZU-DER
庄子德
Agents 北京市万慧达律师事务所 11111
北京市万慧达律师事务所 11111
Priority Data 61/989,055 06.05.2014 US
62/015,711 23.06.2014 US
Title
(EN) Method of block vector prediction for intra block copy mode coding
(ZH) 用于块内复制模式编码的块向量预测方法
Abstract
(EN)
A method of block vector(BV)prediction for an IntraBC mode(Intra-block copy mode)coded block in a video coding system according to the present invention is disclosed. Multiple BV candidate lists are derived from neighboring blocks of the current block.A BV candidate list is selected as a BV predictor for the BV of the current block. The current block is coded based on an Intra reference block located according to the BV of the current block. In one embodiment,a left-bottom(LB) block of the current block is used to derive the first BV candidate list and an above-right(AR)block of the current block is used to derive the second BV candidate list. A 1-bit index code is signaled to select a BV predictor between the first BV candidate list and the second BV candidate list.

(ZH)
根据本发明,公开了一种用于视频编码系统中的块内复制模式编码块的块向量预测的方法。多个块向量候选列表从当前块的相邻块导出。选择块向量候选列表作为当前块的块向量的块向量预测值。基于根据当前块的块向量定位的帧内参考块来对当前块进行编码。在一个实施例中,当前块的左下块用于导出第一块向量候选列表,并且当前块的右上块用于导出第二块向量候选列表。用信号发送1比特位索引代码以在第一块向量候选列表和第二块向量候选列表之间选择块向量预测值。