Block implementation of arithmetic coding for image compression
Jun Wei, Marco Ma, Pongskorn Saipetch, Keh‐Shih Chuang, Bruce K. T. Ho · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1994
The full frame discrete cosine transform (FFDCT) compression method has the capability to eliminate block artifacts that exist in JPEG and MPEG compressed images. Previous FFDCT algorithm used an adaptive bit allocation (BA) method to pack quantized DCT coefficients. In this work, we replaced BA with arithmetic coding (AC) to improve compression performance markedly. We also show that by partitioning the quantized cosine domain much higher arithmetic coding efficiency can be achieved, especially in highly quantized images.