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US 2017/0366811 A1Published application
Coefficient coding harmonization in hevc
AssigneeSony Corporation
InventorsJun Xu, Ali Tabatabai
Life of this patent
Estimating the term…
Abstract
Coefficient coding for transform units (TUs) during high efficiency video coding (HEVC), and similar standards, toward simplifying design while enhancing efficiency. Elements of the invention include coefficient coding for TUs with up-right diagonal scans being modified, and selectively applying multi-level significance map coding.
Claims8
A decoding device, comprising:
- circuitry configured to:
- apply, as a condition that diagonal scan is applied to a transform block of variable block size, diagonal scan to all the transform blocks of all variable block sizes, wherein 4×4 sub-block is scanned using diagonal scan and the diagonal scan is applied inside each 4×4 sub-block;
- and
- apply multi-level significance map decoding to the transform block.
1 more element
A method, comprising:
- applying, as a condition that diagonal scan is applied to a transform block of variable block size, diagonal scan to all the transform blocks of all variable block sizes, wherein 4×4 sub-block is scanned using diagonal scan and the diagonal scan is applied inside each 4×4 sub-block;
- and
- applying multi-level significance map decoding to the transform block.
Dependencies are inferred from the claim text.