Method and apparatus for encoding video based on scanning order of hierarchical data units, and method and apparatus for decoding video based on scanning order of hierarchical data units
US-9225997-B2 · Dec 29, 2015 · US
Low complexity large transform
US8995532B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995532-B2 |
| Application number | US-201113250667-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2011 |
| Priority date | Sep 30, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Methods of encoding a video stream in a video encoder and decoding an encoded video stream in a video decoder using a low complexity large transform are provided. An encoding method includes receiving an n×n residual block in a transform component of the video encoder, and transforming the n×n residual block using an n×n transform to generate an n×n transform coefficient block, wherein the n×n transform is based on (n/m*n/m) m×m Hadamard transforms and (m*m) (n/m)×(n/m) discrete cosign transforms, wherein m<n. A decoding method includes receiving an n×n transform coefficient block in an inverse transform component of the video decoder, and applying an n×n inverse transform to the n×n transform coefficient block to reconstruct an n×n residual block, wherein the n×n inverse transform is based on (n/m*n/m) m×m Hadamard transforms and (m*m) (n/m)×(n/m) inverse discrete cosign transforms, wherein m<n.
First claim
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What is claimed is: 1. A method of encoding a video stream in a video encoder, the method comprising: receiving an n×n residual block in a transform component of the video encoder; and transforming the n×n residual block using an n×n transform to generate an n×n transform coefficient block, wherein the n×n transform is based on (n/m*n/m) m×m Hadamard transforms and (m*m) (n/m)×(n/m) discrete cosine transforms (DCT), wherein m<n, and a matrix D that is derived as the Kronecker pr…
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Classifications
- H04N7/50Primary
Electricity · mapped topic
Electricity · mapped topic
- H04N19/122Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US8995532B2 cover?
- Methods of encoding a video stream in a video encoder and decoding an encoded video stream in a video decoder using a low complexity large transform are provided. An encoding method includes receiving an n×n residual block in a transform component of the video encoder, and transforming the n×n residual block using an n×n transform to generate an n×n transform coefficient block, wherein the n×n …
- Who is the assignee on this patent?
- Budagavi Madhukar, Gupte Ajit, Texas Instruments Inc
- What technology area does this patent fall under?
- Primary CPC classification H04N7/50. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).