select all pixels from x,y by 20 pixels radially in matlab

main.m
% define the center point and radius
x = 50;
y = 75;
r = 20;

% create a structuring element with a circular shape
se = strel('disk', r);

% create a binary mask with the selected pixels
bw = false(size(image)); % replace "image" with your actual image variable
bw(y,x) = true; % set the center pixel to true
bw = imdilate(bw, se); % perform a dilation operation

% apply the mask to your image
selected_pixels = image(bw);
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