CODEWITHSUNDEEP
matlabgeometrymaskbsxfun
jasheq
jasheq

Reputation: 23

Creating a circle mask in Matlab using bsxfun

I am trying to cut out the circle from the image using Matlab.

c(1) and c(2) are x,y coordinates to the center of circle and r is the radius. 

mask = bsxfun(@plus, (1:256) - c(1)^2, (transpose(1:256) - c(2)^2)) < r^2;

figure
imshow(im(mask));

Everything seems to work but instead of mask I am getting a vector.

Upvotes: 1

Views: 1164

Answers (1)

lennon310
lennon310

Reputation: 12689

It is the ((1:256) - c(1))^2 instead of (1:256) - c(1)^2

mask = bsxfun(@plus, ((1:256) - c(1)).^2, (transpose(1:256) - c(2)).^2) < r^2;

figure
imshow((mask));

Upvotes: 1

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