method for reduction of farbmoire in digital images

摘要

The invention relates to a method for reducing color moiré in digital images. The aim of the invention is to improve color moiré suppression such that effects on edge areas and fine structures can be further reduced by detecting and damping low-frequency interference causing color moiré, wherein it is possible to correct surface areas only, edge areas and fine structures remaining substantially excluded. A comparison of band pass energies between the luminance channel and chrominance channels is used as a marker criterion in order to determine pixels initially affected by color moiré and to subsequently carry out a frequency-selective energy reduction for medium frequencies in order to suppress long-wave color moiré.