United States Patent 9,900,593
Xiu , et al. February 20, 2018
Method and apparatus of motion vector prediction for scalable video coding
Abstract
Inter-layer motion mapping information may be used to enable temporal motion vector prediction (TMVP) of an enhancement layer of a bitstream. For example, a reference picture and a motion vector (MV) of an inter-layer video block may be determined. The reference picture may be determined based on a collocated base layer video block. For example, the reference picture may be a collocated inter-layer reference picture of the reference picture of the collocated base layer video block. The MV may be determined based on a MV of the collocated base layer video block. For example, the MV may be determined by determining the MV of the collocated base layer video block and scaling the MV of the collocated base layer video block according to a spatial ratio between the base layer and the enhancement layer. TMVP may be performed on the enhancement layer picture using the MV of the inter-layer video block.
Inventors:
Xiu; Xiaoyu (San Diego, CA), Ye; Yan (San Diego, CA), He; Yong (San Diego, CA), He; Yuwen (San Diego, CA)
Applicant:
Name
City
State
Country
Type
VID SCALE, INC.
Wilmington
DE
US
Assignee:
VID SCALE, Inc. (Wilmington, DE)
Family ID:
1000003135740
Appl. No.:
14/013,688
Filed:
August 29, 2013
Prior Publication Data
Document Identifier
Publication Date
US 20140064374 A1 Mar 6, 2014
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
61694555 Aug 29, 2012
61734650 Dec 7, 2012
61866822 Aug 16, 2013
Current U.S. Class: 1/1
Current CPC Class: H04N 19/33 (20141101); H04N 19/51 (20141101); H04N 19/52 (20141101); H04N 19/31 (20141101); H04N 19/70 (20141101); H04N 19/46 (20141101); H04N 19/587 (20141101); H04N 19/59 (20141101)
Current International Class: H04N 19/31 (20140101); H04N 19/52 (20140101); H04N 19/51 (20140101); H04N 19/70 (20140101); H04N 19/33 (20140101); H04N 19/587 (20140101); H04N 19/46 (20140101); H04N 19/59 (20140101)
Field of Search: ;375/240
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