如何使用Matlab将8灰度级更改为32-灰度（GLCM）

Question

I want to change 8-gray level to 32 gray level, i have tried to use 8-gray level in my image, but the value is like this:

so I want to try use 32-gray level:

this is my code

I = imread('001 A.png');
gray = rgb2gray(I);
offsets = [0 1;-1 1;-1 0;-1 -1];
[GLCMS,SI] = graycomatrix(gray,'Of', offsets);  
stats = graycoprops(GLCMS,
{'contrast','homogeneity','correlation','energy'});

maybe anyone can help me

Thanks in advance

Answer 1

Set Numlevel to 32

I = imread('001 A.png');
gray = rgb2gray(I);
offsets = [0 1;-1 1;-1 0;-1 -1];
[GLCMS,SI] = graycomatrix(gray, 'Of', offsets, 'Numlevel', 32);  
stats = graycoprops(GLCMS, {'contrast','homogeneity','correlation','energy'});