JPEG Software Implementation Techniques Based On A 32-bit RISC CPU

Abstract

New implementation techniques of DCT-based JPEG image compression software is proposed The techniques make effective use of RISC architecture and data of the quantized DCT domain representation. As a result, 640 x 480 (VGA size) YCbCr images in the 4:2:2 format can be encoded and &co&d in about 0.5 seconds by using a 32-bit RISC CPU and DRAM.