Method and device for designing low-frequency non-separable transform
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Video encoding method and apparatus using low-complexity frequency transformation, and video decoding method and apparatus
US9300972B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9300972-B2 |
| Application number | US-201013148657-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 8, 2010 |
| Priority date | Feb 9, 2009 |
| Publication date | Mar 29, 2016 |
| Grant date | Mar 29, 2016 |
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Abstract
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Provided are a video encoding method and apparatus using a low-complexity transformation and a video decoding method and apparatus using a low-complexity inverse transformation. The video encoding method includes: receiving image data of an input picture in predetermined data units; generating coefficients of the predetermined data units by performing a low-complexity transformation on the image data; and outputting the generated coefficients. The low-complexity transformation includes at least one of a selective frequency-domain transformation that uses a transformation basis for a predetermined frequency-domain, a sub data unit transformation that performs a transformation by respectively selecting and applying transformation bases for a plurality of sub data units divided from the image data, and a scale-down transformation that uses a scale-down rectangular transformation basis that is a combination of a rectangular matrix and a square matrix.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of encoding video by using a low-complexity transformation, the method comprising: receiving image data of an input picture in predetermined data units; generating coefficients of the predetermined data units by performing the low-complexity transformation, wherein the low-complexity transformation comprises at least one of a selective frequency-domain transformation that applies a sub-basis of a transformation basis, which corresponds to a pre…
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Electricity · mapped topic
- H04N19/18Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9300972B2 cover?
- Provided are a video encoding method and apparatus using a low-complexity transformation and a video decoding method and apparatus using a low-complexity inverse transformation. The video encoding method includes: receiving image data of an input picture in predetermined data units; generating coefficients of the predetermined data units by performing a low-complexity transformation on the imag…
- Who is the assignee on this patent?
- Cheon Min-Su, Kim Il-Koo, Lee Tammy, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04N19/18. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 29 2016 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).