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.
