IMPROVED METHOD OF COMPRESSING JPEG FILES USING A CONDITIONAL TRANSFORM

摘要

A method for compressing digital image data to improve theefficiency of serial data transmission is disclosed. More specifically, thepresent invention accomplishes image compression by performing the mostcomplex portions of a standard compression technique on a subset of theoriginally provided data utilizing a modified two-dimensional discrete cosinetransform. The invention includes a fast JPEG compressor using a Haartransform with a conditional transform.