图像用小波变换方法来进行分解，再重构，从而再去除噪声-images using wavelet transform method for the decomposition and reconstruction, thereby removing noise

正弦信号加白噪信号，对叠加信号进行延拓并进行一维小波分解，重构逼近信号和细节信号并显示。-Sinusoidal signal with white noise signal, superimposed signals of continuation and the one-dimensional wavelet decomposition and reconstruction approximation signal and detail signal and displayed.