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小波变换是一种时频域信号分析理论，是信号分析处理的一种强有力的新工具。文中根据小波变换特点和边缘的时频空特性，在Ｍａｌａｔ关于小波边缘提取理论的基础上，将二通道小波变换的边缘提取问题推广到Ｍ通道小波变换的边缘提取，讨论和分析了如何利用Ｍ带小波来获取边缘的方法和实现步骤
Wavelet transform is a time-frequency domain signal analysis theory, which is a powerful new tool for signal analysis and processing. According to Malat’s theory of wavelet edge extraction, this paper generalizes the problem of edge extraction of two-channel wavelet transform to the edge extraction of M-channel wavelet transform according to the characteristics of wavelet transform and the time-frequency-space characteristics of the edge. It is discussed and analyzed how to use M WAVELETS TO OBTAIN EDGE AND METHODS OF IMPLEMENTATION