一、引言 随着我国经济的发展,通讯事业取得了突飞猛进的发展,同时由于人民生活水平的不断提高,人们已不能满足于简单的话音通信,集语音、数据和图像于一体的多媒体通讯方式因而成为通讯发展的一个必然趋势。另一方面,超大规模集成电路集成度的不断提高,图像压缩 I. INTRODUCTION With the development of economy in our country, the cause of communication has made rapid development. At the same time, people are no longer satisfied with simple voice communication due to the continuous improvement of people’s living standard. Therefore, the multimedia communication method integrating voice, data and image Become an inevitable trend of development of communications. On the other hand, the integration of very large scale integrated circuits continues to improve, image compression