Image sequence compression and decompression

摘要: A method and system for compressing decompressing a sequence of image frames is disclosed. According to the disclosed embodiments invention, compression process includes an intraframe decomposition (24, 24') performed upon each frame in both row column directions, including mth order averaging differencing operation (56, 62). Each then combined with others adjacent pair or group four by way interframe (28). Quantization (30) performed, preferably division coefficient quantizer (ρ) associated one frequency component subbands containing coefficient. Reconstruction compressed accomplished performing inverse process. embodiments, either decompression processes systems performs Cholesky filtering (60, 66; 170, 172), recursive manner forward backward filtering. In this way, other (CS) (DS) relieved from significant amount computing burden.