how to detect border irregularity?
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I have traced exterior boundaries of this region. now i want to have boundary box and centre of mass around it. How can I do this?
回答（1 个）
KSSV
2020-3-20
If (x,y) are your boundary points.
% Get bounding box
x0 = min(x) ; x1 = max(x) ;
y0 = min(y) ; y1 = max(y) ;
%
A = [x0,y0] ;
B = [x1,y1] ;
Also to get the center, you can find mean.
iwant = [mean(x) mean(y)] ;
9 个评论
joynob ahmed
2020-3-20
B = cell2mat(B) ; % assuming B is two columns
x = B(:,2) ; y = B(:,1) ;
joynob ahmed
2020-3-21
编辑：joynob ahmed
2020-3-21
No,it can't give me the bounding box and centre of mass. May be I have done some mistake. Please check this out.I have attached the resultant image with code:
[B,L] = bwboundaries(rotatedImage,'noholes');
imshow(label2rgb(L, @jet, [1 1 1]))
hold on
for k = 1:length(B)
boundary = B{k};
plot(boundary(:,2), boundary(:,1), 'black', 'LineWidth', 2)
end
% Get bounding box
B = cell2mat(B) ; % assuming B is two columns
x = B(:,2) ; y = B(:,1) ;
x0 = min(x) ; x1 = max(x) ;
y0 = min(y) ; y1 = max(y) ;
A = [x0,y0] ;
B = [x1,y1] ;
plot(A, B, 'r', 'LineWidth', 2)
iwant = [mean(x) mean(y)] ;
plot(iwant, 'g', 'LineWidth', 2) 
joynob ahmed
2020-3-25
KSSV
2020-3-26
Attach your original image.
joynob ahmed
2020-3-26
KSSV
2020-3-26
Attach B and L into mat file and share.
joynob ahmed
2020-3-28
joynob ahmed
2020-4-2
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2020-3-20
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