Switching between streaming video bitstreams
US-9686546-B2 · Jun 20, 2017 · US
Method and apparatus for encoding and decoding image by using rotational transform
US8929673B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8929673-B2 |
| Application number | US-201313920711-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 18, 2013 |
| Priority date | Oct 28, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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An image encoding method includes generating a first frequency coefficient matrix by transforming a predetermined block to a frequency domain; determining whether the first frequency coefficient matrix includes coefficients whose absolute values are greater than a predetermined value; generating a second frequency coefficient matrix by selectively partially switching at least one of rows and columns of the first frequency coefficient matrix according to an angle parameter based on a determination result; and selectively encoding the second frequency coefficient matrix based on the determination result.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of decoding an image, the method comprising: obtaining information indicating whether a first frequency coefficient matrix of a predetermined block includes non-zero coefficients; when the predetermined block is a block predicted by performing intra prediction, decoding data of a second frequency coefficient matrix based on the obtained information; restoring the first frequency coefficient matrix by partially switching at least one of rows and…
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Electricity · mapped topic
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 US8929673B2 cover?
- An image encoding method includes generating a first frequency coefficient matrix by transforming a predetermined block to a frequency domain; determining whether the first frequency coefficient matrix includes coefficients whose absolute values are greater than a predetermined value; generating a second frequency coefficient matrix by selectively partially switching at least one of rows and co…
- Who is the assignee on this patent?
- Samsung Electronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04N19/00812. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 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).