An adaptive image coder based on residue number system

An efficient coder for adaptive lossy compression of still images is presented. It is based on a computational efficient extraction of the details of image blocks. The Discrete Cosine Transform and an efficient Lattice Vector Quantizer based on the Residue Number System are applied. The coder has a very regular and modular structure, has very low computational complexity, and provides a very efficient signal-to-noise ratio at low bit-rates. No blocking effects are introduced.