前言: 图象信号处理是当前人们十分关心的课题之一。图象信号的编码压缩作为图象处理的一个分支,大都以图象通信和存储为目的。图象信号经过编码压缩以后,便可以在较低容量的数字信道上传送,又可以较低的容量来存储。就通信的角度来说,图象的传送也就实现了数字通信所具有的好处,诸如通信距离远,保密性好等近十年来图象信号的编码压缩方面已取得很大的进展,这无疑与大规模集成的功能器件的发展及计算机应用的推广有很 Introduction: Image signal processing is one of the topics that people are very concerned about now. As a branch of image processing, the coding and compression of image signals are mainly for the purpose of image communication and storage. After encoding and compressing the image signal, the image signal can be transmitted on a lower capacity digital channel and can be stored at a lower capacity. In terms of communication, the transmission of images has also realized the benefits of digital communications, such as the long distance of communication and the high degree of confidentiality. Great progress has been made in the coding and compression of image signals in the past decade. This undoubtedly And large-scale integration of the development of functional devices and computer applications have a lot of promotion