How do I know the length from the center of the object to the vertical axis edge and the horizontal axis edge?

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Kantachai Chamnarnkit
评论： Image Analyst 2023-1-31
Here's a picture of the pill, you can see that it's not a circle. I want to know the length from the center to the vertical axis edge and the horizontal axis edge

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回答（1 个）

Bora Eryilmaz
Bora Eryilmaz 2023-1-31
Ran in:
You can do something along these lines, where the location of the centroids seems like what you want:
I = imread('image.jpeg');
Ibw = im2bw(I);
Ilabel = bwlabel(Ibw);
stat = regionprops(Ilabel,'centroid');
imshow(I);
hold on;
for i = 1:numel(stat)
plot(stat(i).Centroid(1), stat(i).Centroid(2), 'ro');
stat(i)
end
ans = struct with fields:
Centroid: [961.5471 479.7054]
ans = struct with fields:
Centroid: [956.8800 409.4163]
ans = struct with fields:
Centroid: [951 63]
ans = struct with fields:
Centroid: [997 448]
  1 个评论
Image Analyst
Image Analyst 2023-1-31
Or
xyCentroids = vertcat(stats); % N by 2 array. x in column 1, y in column 2
% Or if you want them in separate vectors:
xCentroids = xyCentroids(:, 1);
yCentroids = xyCentroids(:, 2);

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