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Difference between graythresh and multithresh for one value of threshold.

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D_coder
D_coder 2018-8-30
评论： Amir Xz 2018-9-4
graythresh(I) and multithresh(I,1) gives me different values even if both are based on otsu's method of thresholding Why?

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Amir Xz
Amir Xz 2018-8-31
t1 = multithresh(I,1);
t2 = graythresh(I);
t1 is a LEVEL, which means is a number between 0 to 255.
t2 is same LEVEL that mapped in [0 1].
In other word:
t1 == uint8(256*t2)
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Amir Xz
Amir Xz 2018-9-4
I gave you an example for an 8-bit digital image.
Example: Check it for 'coins.png' image.
What kind of image that you use?

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