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1. CN107005708 - Intra block copy coding with temporal block vector prediction

Office
China
Application Number 201580051764.6
Application Date 18.09.2015
Publication Number 107005708
Publication Date 01.08.2017
Publication Kind A
IPC
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 19/176
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 19/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
H04N 19/147
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
147according to rate distortion criteria
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
CPC
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 19/147
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
146Data rate or code amount at the encoder output
147according to rate distortion criteria
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 19/52
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 19/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
H04N 19/105
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
105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
Applicants VID SCALE INC
Inventors HE YUWEN
YE YAN
XIU XIAOYU
Priority Data 62/056,352 26.09.2014 US
62/064,930 16.10.2014 US
62/106,615 22.01.2015 US
62/112,619 05.02.2015 US
Title
(EN) Intra block copy coding with temporal block vector prediction
(ZH) 使用时间块向量预测的块内复制译码
Abstract
(EN)
Embodiments disclosed herein operate to improve prior video coding techniques by incorporating an IntraBC flag explicitly at the prediction unit level in merge mode. This flag allows separate selection of block vector (BV) candidates and motion vector (MV) candidates. Specifically, explicit signaling of an IntraBC flag provides information on whether a specific prediction unit will use a BV or an MV. If the IntraBC flag is set, the candidate list is constructed using only spatial and temporal neighboring BVs. If the IntraBC flag is not set, the candidate list is constructed using only spatial and temporal neighboring MVs. An index is then coded which points into the list of candidate BVs or MVs. Further embodiments disclosed herein describe the use of BV-MV bi-prediction in a unified IntraBC and inter framework.

(ZH)
本申请公开的实施方式操作用于通过在合并模式中在预测单元级显式合并BC内标志来改善现有的视频译码技术。该标志允许分开选择块向量(BV)候选和运动向量(MV)候选。具体地,BC内标志的显式信令提供关于特定预测单元将使用BV还是MV的信息。如果设置了BC内标志,则使用仅空间和时间邻近BV来构建候选列表。如果没有设置BC内标志,则使用仅空间和时间邻近MV来构建候选列表。然后译码索引,其指向候选BV或MV的列表。本申请公开的进一步的实施方式描述了在统一的BC内和间框架中使用BV‑MV双预测。