Apparatus for matching colors in image signals

Details Apparatus for matching colors in image signals Apparatus for matching colors in image signals

H - Electricity

04

N

H04N 9/64 (2006.01) G01J 3/50 (2006.01) G01N 21/84 (2006.01) H04N 9/77 (2006.01) H04N 17/02 (2006.01)

Patent

CA 2164459

An inexpensive, yet robust color matcher is achieved, in accordance with the invention, by an apparatus which includes a compare device coupled to receive, as a first input, an input signal representing a combination of a luminance component Y and a chrominance component, and further coupled to receive as a second input, a threshold T, for comparing the input signal to the threshold T and outputting a color match signal if the input signal falls within a range defined by T and -T; and a threshold supply device coupled to the second input for supplying the threshold T, wherein the threshold T is a function of Y and at least two adjustable parameters.

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