System and method for dynamic images virtualisation
US-2024371084-A1 · Nov 7, 2024 · US
Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations
US8938008B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8938008-B2 |
| Application number | US-201113161480-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 15, 2011 |
| Priority date | Jul 24, 2002 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.
First claim
Opening claim text (preview).
We claim: 1. A method for encoding a sequence of video pictures comprising first, second, and third video pictures, the method comprising: computing a scaling value that is based on (i) a first order difference value between an order value for the third video picture and an order value for the first video picture, and (ii) a second order difference value between an order value for the second video picture and the order value for the first video picture, wherein computing the scali…
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- H04N19/51Primary
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 US8938008B2 cover?
- A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power …
- Who is the assignee on this patent?
- Haskell Barin Geoffry, Singer David William, Dumitras Adriana, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H04N19/51. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 20 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).