未使用matlab小波函数实现图像的二维小波分解和重构，分解和重构结果有对比-Matlab wavelet function is not used to achieve a two-dimensional image wavelet decomposition and reconstruction, decomposition and reconstruction contrasting results

通过小波技术对一维信号进行分解与重构，比较变换前后的图像，获取有用的信息(Wavelet technology is used to decompose and reconstruct one dimension signal, compare the image before and after the transformation, and obtain useful information)