Invention Grant
- Patent Title: Spatial proximity context entropy coding
- Patent Title (中): 空间邻域上下文熵编码
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Application No.: US14057554Application Date: 2013-10-18
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Publication No.: US09179151B2Publication Date: 2015-11-03
- Inventor: Ronald Sebastiaan Bultje , Debargha Mukherjee , Yaowu Xu
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: GOOGLE INC.
- Current Assignee: GOOGLE INC.
- Current Assignee Address: US CA Mountain View
- Agency: Young Basile Hanlon & MacFarlane P.C.
- Main IPC: G06K9/36
- IPC: G06K9/36 ; G06K9/46 ; H04N19/13 ; H04N19/129 ; H04N19/91

Abstract:
Encoding and decoding using spatial proximity context entropy coding may include identifying a plurality of transform coefficients for a current block of a current frame of a video stream. The plurality of transform coefficients may be ordered based on a scan order. A current transform coefficient may be identified from the plurality of transform coefficients. A plurality of context coefficients may be identified from the plurality of transform coefficients. Each context coefficient may be spatially proximate to the current transform coefficient and may be available for entropy coding the current transform coefficient. An entropy coding probability for the current transform coefficient may be identified based on the scan order and the plurality of context coefficients. The current transform coefficient may be entropy coded based on the entropy coding probability. The entropy coded current transform coefficient may be included in an output bitstream, which may be stored or transmitted.
Public/Granted literature
- US20150110409A1 SPATIAL PROXIMITY CONTEXT ENTROPY CODING Public/Granted day:2015-04-23
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