how to calculate the area size of each spot in the image of ROI (pixels) in Matlab
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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
clc;close
I=imread('rice.png');
imshow(I);
height = 200;
width = 200;
roi = images.roi.Rectangle(gca,'Position',[10,10,width,height],'StripeColor','r');
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/742299/image.jpeg)
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Image Analyst
2021 年 9 月 18 日
See my Image Segmentation Tutorial and adapt as needed:
If you need to background correct your image, see my attached demo.
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