homework1\cacupsnr.m .........\fig1.jpg .........\fig2.jpg .........\fig3.jpg .........\graylena.bmp .........\plotthrf.m .........\thrfunc.m .........\Untitled3.m .........\wavethrdn.m .........\wthresfunc.m .........\增强hou图像.jpg .........\增强后图像.jpg .........\增强和图像.jpg .........\增强的图像.jpg homework1