中文说明：利用小波分析进行边缘检测，结合双阈值的边缘提取方法。边缘提取效果明显优于传统的边缘检测算子，噪声性能较好。供大家参考。
English Description：
Using wavelet analysis for edge detection, combined with double threshold edge extraction method. The effect of edge detection is better than the traditional edge detection operator, and the noise performance is better. For your reference.