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This proggram is for thresholding :

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ATTAR Mehenni
ATTAR Mehenni 2018-2-24
关闭： MATLAB Answer Bot 2021-8-20
[n,m]=size(a);
abin=zeros(n,m);
thresh = 90;
for i=1:n
for j=1:m
if (a(i,j)>thresh)
abin(i,j)=0;
else
abin(i,j)=1;
end
end
end
Why, in another example, did I find thresh = 0.1 ( 0 < thresh < 1 )? What's the difference? Thanks

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Image Analyst
Image Analyst 2018-2-25
I'll fix your formatting this time for you but for next time, read this link
The answer is because the other program wanted 0.1 for a threshold - because they were using a floating point image - and you decided to use 90 because you probably have a uint8 integer image. HOW you go the 90, I don't know, but you can do your whole program more simply with just 2 lines:
thresh = 90;
abin = a <= thresh;
Everything else you have is unnecessary or overly complicated.

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