Patent ID: 7330209
Filing Date: 2008-02-12
Classification: G06T,H04N

Abstract:
1. A method of interpolation for a complementary-color-filtered array image, comprising the steps of: (a) provide a complementary-color-filtered array of pixel values with yellow pixel values Ye on a first subarray, cyan pixel values Cy on a second subarray, magenta pixel values Mg on a third subarray, and green pixel values G on a fourth subarray; (b) interpolating the subarray of yellow pixel values to form a yellow array; (c) interpolating the subarray of cyan pixel values to form a cyan array; (d) interpolating the subarray of magenta pixel values to form a magenta array; (e) interpolating the subarray of green pixel values to form a green array; (f) adjusting the color values for each pixel by (i) subtracting a quantity (Ye+Cy−2*G−Mg)/4 from Ye to generate the pixel's adjusted yellow value where Ye is the pixel's yellow value from step (b), Cy is the pixel's cyan value from step (c), Mg is the pixel's magenta value from step (d), and G is the pixel's green value from step (e); (ii) subtracting the quantity (Ye+Cy−2*G−Mg)/4 from Cy to generate the pixel's adjusted cyan value; (iii) adding the quantity (Ye+Cy−2*G−Mg)/4 to Mg to generate the pixel's adjusted magenta value; and (iv) adding the quantity (Ye+Cy−2*G−Mg)/8 to G to generate the pixel's adjusted green value.