# is there a way to sort rectangle to 4 lines

조회 수: 1(최근 30일)
i want to sort the points to 4 groups upper line lower line left and right please dont use hough tranbsform
m=zeros(200,300);
m=logical(m);
m(50,30:190)=1;
m(100,30:190)=1;
m(50:100,30)=1;
m(50:100,190)=1;
figure,imshow(m)
##### 댓글 수: 1표시숨기기 없음
David Young 11 Jul 2014
I'm curious: what's the reason for avoiding the Hough transform?

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### 답변(1개)

Image Analyst 10 Jul 2014
Uh yeah. Why not just do
topLine = [50,30; 50, 190]; % The x,y coordinates where each row is one endpoint.
bottomLIne = [100,30; 100, 190];
leftLine = [50,30; 100,30];
rightLine = [50,190; 100,190];
If you don't mean that , then you'd better explain specifically what you mean by "4 groups".
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Image Analyst 10 Jul 2014
I can think of a few methods. What are you thinking of? You could use RANSAC or use traditional image processing methods (like convhull, activecontour, morphological closing, etc.) and try to extract out upper, lower, left, and right parts and then call polyfit().

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