Reducing color aliasing artifacts from color digital images

Details Reducing color aliasing artifacts from color digital images Reducing color aliasing artifacts from color digital images

2005-08-09

2005-08-09

Kostak, Victor R. (Department: 2614)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S242000, C345S611000

Reexamination Certificate

active

06927804

ABSTRACT:
A method of reducing color aliasing artifacts from a color digital image having color pixels includes providing luminance and chrominance signals from the color digital image; using such luminance and chrominance signals to separate the image into textured and nontextured regions having boundaries; downsampling the chrominance signals and texture region mapping; producing cleaned chrominance signals in the textured regions in response to the boundaries of the textured region and chrominance signals; producing cleaned chrominance signals in the nontextured regions in response to the chrominance signals; upsampling the noise-cleaned chrominance signals; and using the luminance and upsampled noise-cleaned chrominance signals to provide a color digital image having reduced color aliasing artifacts.

REFERENCES:
patent: 6326964 (2001-12-01), Snyder et al.
patent: 2004/0070677 (2004-04-01), Adams et al.
patent: 1 202 220 (2002-05-01), None

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