Patent Document ID: 8351694
Application ID: 13156991
Patent Status: 1

Claim One:
1. A method, comprising: determining a most frequently occurring color in a color-mapped image of a physical rendering which is not included in a color table, wherein the color table represents a predefined discrete set of colors known prior to the physical rendering being created, and the colors in the predefined discrete set of colors have respective color values; designating the most frequently occurring color which is not included in the color table as a background color and assigning a color value to the background color, wherein the background color value is different from the color values included in the color table; determining, for pixels comprising the color-mapped image, whether a pixel of the pixels exhibits a color value equal to a color value associated with the background color; setting a flag for the pixel to a background value corresponding to a background pixel in response to the color value of the pixel being equal to the color value associated with the background color; setting the flag for the pixel to a foreground value corresponding to a foreground pixel in response to the color value of the pixel being different than the value associated with the background color; compressing respective flags for the pixels of the color-mapped image; and compressing color value information for foreground pixels of the color-mapped image.