1, image filtering experiment ① with imnoise function adds salt and pepper noise image ' lena.bmp' in value, with observations ② medfilt2 function noisy image filtering. 2, using the function generation fspecial mean, Prewitt, Sobel, Laplacian filter template, and then filter2 function ' cameraman.tif' image spatial filtering, display filtering results. 3, the design of Gaussian low-pass and high-pass filter in the frequency domain, for ' phantom.bmp' image frequency domain filtering, filtering results show. Then change the filter cutoff frequency, observe the effect on the results. 4, with imdilate, imerode, imopen, imclose function ' 326.bmp' is expanded, erosion, opening and closing operations. (Structural units were taken 3* 3 rectangle template).

SC16005004+郭亚周+第十二次作业\326.bmp
..............................\cameraman.tif
..............................\lena.bmp
..............................\phantom.bmp
..............................\t12_1.m
..............................\t12_2.m
..............................\t12_3.m
..............................\t12_4.m
SC16005004+郭亚周+第十二次作业

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