********************手工制造 请勿复制*********************************Image enhancement (enhancement) refers to the dura image enhancement, the useful information, it can be a distortion of the process, its purpose is to enhance the visual effect. Will not clear image becomes clear or emphasize certain interest, inhibit the characteristic is not interested, that improving image quality and abundant information, strengthen image interpretation and recognition of the image processing first chapter introduces image processing and image enhancement, and then introduced the research purpose and 2 introduces the basic theory of image enhancement, convolution theorem and Fourier transform. Then introduces the subject of development tools, as well as the development of Matlab Matlab, main function, etcThe third chapter basically introduces image enhancement method of spatial filtering, smooth and airspace airspace, use sharpen the different effects of program of the filterThe fourth chapter basically introduces image enhancement method of frequency domain filtering enhancement in frequency domain, the frequency domain and frequency domain high-pass filter low-pass words: image enhancement, MATLAB, Spatial filtering enhancement, Enhanced