Patent ID: 7072508

Claim:
An apparatus for reconstructing color filter array images, comprising: an image recording module for generating an image of spatially consistent sampled values output from a color filter array; each of a plurality of pixels in the image having a location at which a sampled value of only one of a plurality of color channels is recorded; and an image reconstruction module for linearly transforming the sampled value at the location of a selected one of the plurality of pixels in the image to estimate a color channel not recorded by the image recording module at the location of the selected pixel in the image; wherein the image reconstruction module computes coefficients of a linear transformation using color channels of sampled values of the plurality of pixels in the image without interpolating values of other color channels of the plurality of pixels not recorded in the image by the image recording module; and wherein the image reconstruction module fits the linear transformation to at least one pair of sums of color channels that are summed along lines through a window of the image.