im2bw finding an alternative
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Hey everybody, I try to find an alternative to im2bw(x,y).
Here's the code excerpt:
A1 = imread('filename.png'); A2 = im2bw(A1,0.5); %Make BW matrix (0=black, 1=white)
thanks for helping
1 个评论
Geoff Hayes
2017-9-26
Lisa - are you looking for an alternative because you don't have access to this function? I don't think it would be that difficult to come up with your own implementation of this function.
回答（2 个）
Eeshan Mitra
2017-9-29
0 个投票
If you do not have access to the Image Processing Toolbox as Geoff commented, you can manually threshold, as described in the following post:
Image Analyst
2017-9-29
To threshold at a level of one half, try this:
level = intmax(class(A1)) / 2;
BW = A1 > level; % Or can use < instead to get dark things.
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2017-9-26
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