Patent ID: 8477394

Claim:
A color defringing filter: a red filter; a blue filter; a green filter; an red-green-blue (RGB) to luminance/chrominance (LC) converter coupled to the red filter, the blue filter and the green filter; a first chroma filter and a second chroma filter coupled to the RGB to LC converter; wherein the first chroma filter filters a first chroma component of the image in a scan direction and the second chroma filter filters a second chroma component of the image; wherein filtering the red component comprises applying a red shift filter in accordance with y r ⁡ ( n , m ) = 1 3 ⁢ x r ⁡ ( n , m + 1 ) + 2 3 ⁢ x r ⁡ ( n , m ) , where x r is a red component of an input image and y r is a red component of a filtered image y, and filtering the blue component comprises applying a blue shift filter.