Using MATLAB, to achieve the following four functions First, access to image RGB value: Given a picture, get the point (x, y), and (x, y) around 8 o clock in the R, G, B values. Second, the realization rgb2gray function: using matlab realize rgb2gray functions, and can calculate the variance after the conversion of grayscale image. Third, the grayscale contrast enhancement: namely, the use of gray stretch and histogram equalization, contrast enhancement given graph. Fourth, the image denoising: for a given image add salt and pepper noise, and you know at least two denoising algorithm to remove salt and pepper noise.

MATLAB_PICTURE_PROCESSING\test_1.m
.........................\test_2.m
.........................\test_3.m
.........................\test_4.m
.........................\pic\pic1.jpg
.........................\...\pic1_灰度.jpg
.........................\...\pic1_灰度_灰度拉伸.jpg
.........................\...\pic1_灰度_直方图均衡化.jpg
.........................\...\pic2.jpg
.........................\...\pic2_灰度.jpg
.........................\pic
MATLAB_PICTURE_PROCESSING

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