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Apparatus and method for generating typical colors for image coding
US9183643B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9183643-B2 |
| Application number | US-201313948370-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 23, 2013 |
| Priority date | Sep 4, 2012 |
| Publication date | Nov 10, 2015 |
| Grant date | Nov 10, 2015 |
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Abstract
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According to one embodiment, an acquisition unit acquires a pixel block having a predetermined size from image data to be coded. A comparison unit calculates a distance between a color of a target pixel in the pixel block and each of a plurality of typical colors, and selects a typical color of which the distance is a minimum distance from the plurality of typical colors. A decision unit assigns a first index representing the selected typical color to the target pixel if the minimum distance is smaller than a first threshold, assigns a second index representing a new typical color to the target pixel if the minimum distance is larger than the first threshold, and adds the color of the target pixel as the new typical color when the second index is assigned. A coding unit codes the selected typical color, the new typical color, the first index and the second index.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for coding an image, comprising: acquiring a pixel block having a predetermined size from image data to be coded; calculating a distance between a color of a target pixel in the pixel block and each of a plurality of typical colors; selecting a typical color of which the distance is a minimum distance from the plurality of typical colors; assigning a first index representing the selected typical color to the target pixel if the minimum distanc…
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- G06T9/00Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US9183643B2 cover?
- According to one embodiment, an acquisition unit acquires a pixel block having a predetermined size from image data to be coded. A comparison unit calculates a distance between a color of a target pixel in the pixel block and each of a plurality of typical colors, and selects a typical color of which the distance is a minimum distance from the plurality of typical colors. A decision unit assign…
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification G06T9/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 10 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).