小波变换在数字化图象的压缩中起着极其重要的作用。本文在简单阐述小波变换基本理论和Mallat算法基本思想的基础上,着重利用Matlab软件研究了小波变换在图像压缩技术中的具体应用,结合实例给出了具体程序,并对程序进行了详细说明。 Wavelet transform plays an extremely important role in the compression of digital images. Based on the basic theory of wavelet transform and the basic idea of ​​Mallat algorithm, this paper focuses on the application of wavelet transform in image compression technology with emphasis on Matlab software, and gives a specific program combining with examples, and gives a detailed description of the program.