- Display histogram
- imhist(I)
- Histogram equalization
- lena_eq=histeq(lena,256);
- Contrast-limited adaptive histogram equalization
- lena_enhanced = adapthisteq(lena,'NumTiles', [8 8] ,'ClipLimit',0.0005); %Higher numbers result in more contrast, local histogram equalization
- Histogram sliding
- lena_enhanced=lena;
- greater_than_200 = find(lena > 200);
- lena_enhanced(greater_than_200) = imadd(lena(greater_than_200),10); %shift the image histogram to the right 10 values for all pixel values greater than 200.
Thursday, February 16, 2012
Image enhancement
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