Inventors:
James Adams - Rochester NY, US
Andrew McMahon - Sunnyvale CA, US
Pierre Della Nave - Sunnyvale CA, US
Amy Enge - Spencerport NY, US
International Classification:
H04N 9/64
Abstract:
A method of reducing noise in a digital image produced by a digital imaging device, includes producing a luminance and at least one chrominance channel from a full-color digital image with each channel having a plurality of pixels and each such pixel has a value; producing an edge value from neighboring pixels in neighborhoods in the at least one chrominance channel; modifying the pixel value in the chrominance channel with an infinite impulse response filter responsive to the edge value of the corresponding pixel neighborhood to provide a modified chrominance channel; and producing a full-color digital image from the luminance channel and the modified chrominance channel, with reduced noise.