Signal processing method and apparatus for producing interpolate

Details Signal processing method and apparatus for producing interpolate Signal processing method and apparatus for producing interpolate

1986-02-03

1987-02-10

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 43, H04N 9077, H04N 907

Patent

active

046426787

ABSTRACT:
A signal processing method and apparatus for processing a sampled color image signal of the type having luminance values and chrominance values representing a highly sampled luminance component and less highly sampled chrominance components to produce interpolated chrominance values between sampled chrominance values is characterized by producing hue values at neighboring chrominance component sample locations as a function of a luminance value and the chrominance value at the neighboring locations; producing a signal representing an interpolated hue value as a function of neighboring hue values; and producing a signal representing an interpolated chrominance value as a function of the interpolated hue value and a luminance value at the interpolated location. The signal processing method reduces color fringing in an image reproduced from the sampled image signal without introducing unwanted hue shifts.

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