finding the exact thrreshold for im2bw
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Hello to everyone, i'm trying to convert an image to logical,so i have to find a threshold for im2bw, but i don't know which is the right algorithm to do this?
回答（3 个）
Walter Roberson
2011-5-31
1 个投票
There is no one algorithm: it depends on what you are interested in examining.
Image Analyst
2011-7-14
0 个投票
You might be interested in a visual/interactive GUI to allow you to pick a threshold: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
Sean de Wolski
2011-7-14
It is calculated from the range of the class(im)
range = getrangefromclass(A);
BWp = (A > range(2) *level);
Is the engine: So for example:
range = getrangefromclass(uint8(magic(3)));
level = 0.75;
range(2) *level
ans =
191.25
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2011-5-31
2023-12-29
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