Patent Document ID: 9049334
Application ID: 13405195
Patent Status: 1

Claim One:
1. A method for chroma denoising a color digital image created in a digital camera comprising: decomposing the color digital image into at least a first spatial frequency band and a second spatial frequency band; calculating from a color correction matrix associated with the camera a first modified color correction matrix for the first spatial frequency band and a second modified color correction matrix for the second spatial frequency band; applying the first modified color correction matrix to all pixel data in the first spatial frequency band to produce color-corrected data in the first spatial frequency band and applying the second modified color correction matrix to all pixel data in the second spatial frequency band to produce color-corrected data in the second spatial frequency band; and combining the color-corrected data in the first spatial frequency band and the color-corrected data in the second spatial frequency band to produce an output color digital image; wherein calculating from a color correction matrix associated with the camera a first modified color correction matrix for the first spatial frequency band and a second modified color correction matrix for the second spatial frequency band comprises deriving the first and second modified color matrices from desaturated color values of a color calibration chart.