United States Patent 9,877,043
He , et al. January 23, 2018
Methods and systems for intra block copy coding with block vector derivation
Abstract
Systems and methods are described for encoding and decoding video using derived block vectors as predictors in intra block copy mode. In an exemplary encoding method, an encoder identifies at least a first candidate block vector for the prediction of an input video block, where the first candidate block vector points to a first candidate block. The encoder then identifies a first predictive vector (e.g. a block vector or a motion vector) that was used to encode the first candidate block. From the first candidate block vector and the first predictive vector, the encoder generates a derived predictive vector from the first candidate block vector and the first predictive vector. The encoder then encodes the video block in the bit stream using the derived predictive vector for the prediction of the input video block.
Inventors:
He; Yuwen (San Diego, CA), Ye; Yan (San Diego, CA), Xiu; Xiaoyu (San Diego, CA)
Applicant:
Name
City
State
Country
Type
Vid Scale Inc.
Wilmington
DE
US
Assignee:
Vid Scale Inc. (Wilmington, DE)
Family ID:
1000003077649
Appl. No.:
14/743,657
Filed:
June 18, 2015
Prior Publication Data
Document Identifier
Publication Date
US 20150373366 A1 Dec 24, 2015
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
62014664 Jun 19, 2014
Current U.S. Class: 1/1
Current CPC Class: H04N 19/521 (20141101); H04N 19/147 (20141101); H04N 19/186 (20141101); H04N 19/94 (20141101); H04N 19/593 (20141101); H04N 19/70 (20141101); H04N 19/90 (20141101); H04N 19/463 (20141101)
Current International Class: H04N 7/12 (20060101); H04N 19/463 (20140101); H04N 19/186 (20140101); H04N 19/90 (20140101); H04N 19/94 (20140101); H04N 19/513 (20140101); H04N 19/70 (20140101); H04N 19/147 (20140101); H04N 19/593 (20140101)
Field of Search: ;375/240.16
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