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18 lines
416 B
Matlab
18 lines
416 B
Matlab
function [mask] = make_circular_mask(N, radius)
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%Make a circular mask. Made by YJ
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% N: size of image
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% radius: radius
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if length(N)==1
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x = linspace(-floor(N/2),ceil(N/2)-1,N);
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y = linspace(-floor(N/2),ceil(N/2)-1,N);
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else
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x = linspace(-floor(N(2)/2),ceil(N(2)/2)-1,N(2));
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y = linspace(-floor(N(1)/2),ceil(N(1)/2)-1,N(1));
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end
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[Y, X] = meshgrid(x,y);
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S = sqrt(X.^2+Y.^2);
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mask = S <= radius;
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end
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