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how to take union of images?

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Elysi Cochin
Elysi Cochin 2014-3-13
编辑： Youssef Khmou 2014-3-14
i rotate an image a of size 150*150 from 0 to 90 degrees. I wanted to take the union of all images rotated and then calculate mean and max of the union images... how to do that.... please do reply...
for j = 0:90
rROI = imresize(ROI, [150 150]);
a = imrotate(rROI,j);
end
is it possible to display mean and max of that image also....
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Walter Roberson
Walter Roberson 2014-3-14
Still how do you define "union" for this purpose?

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Youssef Khmou
Youssef Khmou 2014-3-14
编辑：Youssef Khmou 2014-3-14
union is not clear yet, but try this way :
a Sample :
X=imread('circuit.tif');
ROI=X(1:100,1:100);
F1=rot90(ROI,1);
F2=rot90(ROI,2);
F3=rot90(ROI,3);
You have the rotated parts, for easy calculus ROI is considered square, you can now compte the mean (F1+F2+F3)/3 or the variance or the std.....

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