Patent ID: 8068145
Filing Date: 2011-11-29
Classification: H04N

Abstract:
1. A method for demosaicing an image that is acquired by a color sensor, the method comprises: receiving intensity values for pixels of the image, and carrying out, for each pixel of a group of pixels of the image, the stages of: calculating at least one chrominance value for the pixel in response to intensity values of neighboring pixels; and computing a luminance value for the pixel in response to the at least one chrominance value of the pixel and to an intensity value of the pixel; wherein the intensity value of each pixel is indicative of an amount of light that was detected by a chromatically filtered sensing element of the color sensor; wherein the calculating comprises: determining a first chrominance vector that is responsive to differences between intensity values of pixels of each horizontal pair of adjacent pixels out of the neighboring pixels; determining a second chrominance vector that is responsive to differences between intensity values of pixels of each vertical pair of adjacent pixels out of the neighboring pixels; and determining the least one chrominance value in response to the first chrominance vector, to the second chrominance vector, and to gray color reference.