Invention Grant
- Patent Title: Simplified context selection for entropy coding of transform coefficient syntax elements
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Application No.: US15427961Application Date: 2017-02-08
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Publication No.: US11575946B2Publication Date: 2023-02-07
- Inventor: Vivienne Sze
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Carl Peterson; Frank D. Cimino
- Main IPC: H04N19/70
- IPC: H04N19/70 ; H04N19/91 ; H04N19/61 ; H04N19/50 ; H04N19/122 ; H04N19/46 ; H04N19/176 ; H04N19/184 ; H04N19/186

Abstract:
A method for entropy encoding syntax elements of transform coefficient levels in a video encoder to generate a compressed video bit stream is provided that includes selecting a context for a first significant coefficient flag corresponding to a first transform coefficient level in a 32×32 transform block, wherein the first transform coefficient level is at a lowest frequency position in the 32×32 transform block, entropy encoding the first significant coefficient flag using the context, selecting the context for a second significant coefficient flag corresponding to a second transform coefficient level in a 16×16 transform block, wherein the second transform coefficient level is at a lowest frequency position in the 16×16 transform block, and entropy encoding the second significant coefficient flag using the context.
Public/Granted literature
- US20170150185A1 SIMPLIFIED CONTEXT SELECTION FOR ENTROPY CODING OF TRANSFORM COEFFICIENT SYNTAX ELEMENTS Public/Granted day:2017-05-25
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