Detect all the rectangles in image
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Hey all,
in the following image, all the rectangles are a little bit deformed due to power leakage effect. I want to detect all the rectangles and obtain the positions of the rectangles.
Is there a way to detect all rectangles?
Thank you
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채택된 답변
Image Analyst
2019년 2월 18일
It's trivial. Just use regionprops(). See my Image Segmentation Tutorial
댓글 수: 9
Image Analyst
2019년 2월 20일
How about you just compute the centroid, even with the tails, then take a vertical and horizontal line through the centroid and use find() to find the top and bottom lines and left and right columns of the rectangle?
추가 답변 (1개)
KSSV
2019년 2월 18일
I = imread('myImage.jpeg') ;
[y,x] = find(I>50) ;
imshow(I)
hold on
idx = kmeans([x y],4) ;
for i = 1:4
plot(x(idx==i),y(idx==i),'.')
% GEt L and B of rectangles
x0 = min(x(idx==i)) ; x1 = max(x(idx==i)) ;
y0 = min(y(idx==i)) ; y1 = max(y(idx==i)) ;
%
L = x1-x0 ;
B = y1-y0 ;
coor = [x0 y0 ; x0 y1 ; x1 y1 ; x1 y0] ;
patch(coor(:,1),coor(:,2),rand(1,3))
end
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