In a method for reducing color moire in digital images, the object is to
improve the suppression of color moire in such a way that effects on edge
areas and fine structures are further reduced in that low-frequency beats
causing color moire are detected and attenuated in such a way that
correction is carried out only for two-dimensionally extensive areas and
the edge areas and fine structures remain excluded to a great extent. A
comparison of bandpass energies between the luminance channel and
chrominance channels serves as a marking criterion in order initially to
determine pixels in which color moire is present and then to carry out a
frequency-selective energy reduction in the chrominance channels at
middle frequencies for suppressing the long-wave color moire.