Image analysis – Color image processing
Reexamination Certificate
2005-05-20
2009-11-24
Bali, Vikkram (Department: 2624)
Image analysis
Color image processing
C348S223100, C348S225100, C358S001900, C358S533000
Reexamination Certificate
active
07623703
ABSTRACT:
In a method for reducing color moiré in digital images, the object is to improve the suppression of color moiré in such a way that effects on edge areas and fine structures are further reduced in that low-frequency beats causing color moiré 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 moiré 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 moiré.
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Bali Vikkram
Entezari Michelle
Jenoptik Laser, Optik Systeme GmbH
Reed Smith LLP
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