Method and system for improving color reduction
US7468733B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Sep 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for reducing or eliminating artifacts that may occur during color reduction of images. A bias is added to a data structure that is arranged to store counts of pixel colors of an image. Counts of pixel colors of the image are added to the data structure. Via the data structure, colors from the image are grouped into buckets until the number of buckets is less than or equal to a number of colors in a palette. Then, colors of pixels in the image are mapped to colors in the palette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.