Patent ID: 6289118
Filing Date: 2001-09-11
Classification: G06T,H04N

Abstract:
A method of selecting a compression algorithm for compressing information comprising:a computer implemented process analyzing the characteristics of the information content in a data file by determining whether a number of colors in the information exceeds a threshold;if the number of colors exceeds the threshold, discarding sufficient colors to at least meet the threshold bydetermining the number of colors Y that are among a lesser used set of colors individually representing less than a predetermined percentage of the total number of pixels in the information,computing the number of colors Z in excess of a predetermined number,determining if there are a sufficient number of colors to discard in the lesser used set of colors by determining if Y is greater than or equal to Z, and if so,replacing one or more of the colors in the lesser used set of colors by mapping the one or more colors to one or more neighboring colors present in the information; andthe computer implemented process selecting a compression method based on the characteristics of the information content in the data file.