Patent ID: 7206001
Filing Date: 2007-04-17
Classification: G09G

Abstract:
1. A method for dithering an image having a plurality of 16-bit color channel pixel planes, each pixel plane having a plurality of pixels, each pixel having a 16-bit value, the method comprising: for each pixel, dividing the pixel value into a first portion including the 8 most-significant bits of the pixel value and a second portion including the 8 least-significant bits of the pixel value channel; dividing the bits of the second portion into a third portion, including the 4 most-significant bits of the second portion, and a fourth portion, including the 4 least-significant bits of the second portion; comparing the bits of the third portion to a first entry in a 4-by-4 matrix A, accessed by A responsive to the bits of the third portion being greater than the first entry in the matrix, incrementing the value of the first portion of the pixel value; responsive to the bits of the third portion equaling the first entry in the matrix: