Hough變換源代碼說明

Question

hough_in = bwareaopen(bin_im(:,:,n),20);  
% Compute the Hough transform of the image using the hough function 
[H,T,R] = hough(hough_in); 
P = houghpeaks(H,3,'threshold',ceil(0.3*max(H(:)))); 
x = T(P(:,2)); 
y = R(P(:,1)); 
lines = houghlines(hough_in,T,R,P,'FillGap',5,'MinLength',7); 

x和y這裏代表什麼？

Answer 1

x包含theta和y是檢測到的行的rhos。

請參考：

https://de.mathworks.com/help/images/ref/hough.html

和

https://de.mathworks.com/help/images/ref/houghpeaks.html