小波分析工程应用实例代码。小波变换检测故障信号与小波类型的选择；图像多尺度边缘检测算法研究；基于小波图像压缩技术的算法等等实例。-Wavelet analysis of engineering application code. Failure detection signal wavelet transform and wavelet type selection image multi-scale edge detection algorithm wavelet-based image