how to calculate the area size of each spot in the image of ROI (pixels) in Matlab

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chihyu on 18 Sep 2021
Commented: chihyu on 19 Sep 2021
I have a spot pattern (similar to the picture of rice grains below). I want to calculate the area of each rice grain in the image ROI. But no relevant discussions were found
height = 200;
width = 200;
roi = images.roi.Rectangle(gca,'Position',[10,10,width,height],'StripeColor','r');

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