Method and device for designing low-frequency non-separable transform
US-2024373011-A1 · Nov 7, 2024 · US
Wedgelet-Based Coding Concept
US2025024039A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025024039-A1 |
| Application number | US-202418780006-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 22, 2024 |
| Priority date | Jan 3, 2014 |
| Publication date | Jan 16, 2025 |
| Grant date | — |
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Abstract
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Wedgelet-based coding for coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi-partitioning of the current coding block to the actual needs, namely the size, of the current coding block, and the variability of the bi-partitioning by varying the wedglet separation line, respectively. The greater the current coding block is, the longer the variable-length coded syntax element may be. This length dependency may even be sufficiently effective in terms of coding efficiency so that the variable length coded syntax element may be coded without context-adaptive entropy coding, but directly or using fixed-equal-probability binary entropy coding.
First claim
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1 . A decoder supporting wedgelet-based decoding of coding blocks, comprising: a length determiner configured to determine a length of a variable-length coded syntax element associated with a current coding block based on a size of the current coding block; a reader configured to read, using the length determined, the variable-length coded syntax element from a data stream directly or using fixed-equal-probability binary entropy decoding; a wedgelet bi-partitioner configured to determine a bi-partitioning of the current coding block into two wedgelets based on the variable-length coded syntax element; and a reconstructor configured to reconstruct the current coding block in accordance with the bi-partitioning. 2 .- 20 . (canceled)
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Entropy coding, e.g. variable length coding [VLC] or arithmetic coding · CPC title
- H04N19/463Primary
by compressing encoding parameters before transmission · CPC title
Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks · CPC title
the region being a block, e.g. a macroblock · CPC title
characterised by syntax aspects related to video coding, e.g. related to compression standards · CPC title
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- What does patent US2025024039A1 cover?
- Wedgelet-based coding for coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi…
- Who is the assignee on this patent?
- Ge Video Compression Llc
- What technology area does this patent fall under?
- Primary CPC classification H04N19/463. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 16 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).