In this study, approaches of image enhancement, edge extraction, and line-based image matching for remote sensing images are proposed. The image enhancement includes noise reduction and contrast enhancement. We apply wavelet shrinkage technique

数字图像的大作业，能够读取图像，显示，并且能够锐化，锐化程度可以调节-Digital image of the big jobs, be able to read the image, display, and can sharpen Sharpness can be adjusted