说明：  本文对小波分析在多尺度边缘检测、静止图像压缩和数字水印三个方面应用的方法进行了研究。对于写毕业论文的同学很有帮助
(In this paper, wavelet analysis in the multi-scale edge detection, still image compression and digital watermarking method of the application of the three studied. For thesis students to write very helpful)