Patent ID: 8270713
Filing Date: 2012-09-18
Classification: G06T,H04N

Abstract:
1. A method of determining a missing color value associated with a subject pixel in digital image data derived from a Bayer-patterned pixel array, the method comprising: computing a horizontal gradient score, a horizontal chroma score, a vertical gradient score, and a vertical chroma score associated with the subject pixel; adding the horizontal gradient score to the horizontal chroma score to yield a combined horizontal score, and adding the vertical gradient score to the vertical chroma score to yield a combined vertical score; comparing the combined horizontal score to the combined vertical score to determine an interpolation direction; and determining the missing color value by interpolating in the interpolation direction, wherein the subject pixel is a native red pixel, the horizontal gradient score, D and the vertical gradient score, D v , is computed as follows: wherein B represents the blue value associated with the pixel located at the row and column indicated in the subscript, and G represents the green value associated with the pixel located at the row and column indicated in the subscript.