Invention Grant
- Patent Title: Context determination for entropy coding of run-length encoded transform coefficients
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Application No.: US14760514Application Date: 2013-01-16
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Publication No.: US10291912B2Publication Date: 2019-05-14
- Inventor: Dake He , Tianying Ji , Jing Wang , Xiaofeng Wang
- Applicant: BlackBerry Limited
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Rowand LLP
- International Application: PCT/CA2013/050021 WO 20130116
- International Announcement: WO2014/110652 WO 20140724
- Main IPC: H04N19/60
- IPC: H04N19/60 ; H04N19/13 ; H04N19/159 ; H04N19/176 ; H04N19/463 ; H04N19/14 ; H04N19/18 ; H04N19/593 ; H04N19/91 ; H04N19/129

Abstract:
Methods and devices for encoding and decoding video using mode-dependent context determination in the case of level-run pair coding of transform coefficients are described. Intra-coding modes may be grouped into classes and each class may be associated with a partitioning of a coefficient group into regions. The region in which a coefficient falls determines, in part, the context selected for encoding bins associated with that coefficient, including a level, if the coefficient is non-zero, and a run if the coefficient correspond to the bin of a binarized run value.
Public/Granted literature
- US20150358621A1 CONTEXT DETERMINATION FOR ENTROPY CODING OF RUN-LENGTH ENCODED TRANSFORM COEFFICIENTS Public/Granted day:2015-12-10
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