I am trying to detect all possible lines in an image with hough method, however I need to adjust the "MinLength" and "FİllGap" for better results, my question as I mentioned in the headline, is there any way to detect all possible lines with a special function or something else? The code I used is given and the image is added.
I = imread("line2.png");
BW2gray = rgb2gray(I);
BW = edge(BW2gray,"canny");
[H,theta,rho] = hough(BW);
P = houghpeaks(H,10,'threshold',ceil(0.3*max(H(:))));
x = theta(P(:,2));
y = rho(P(:,1));
lines = houghlines(BW,theta,rho,P,'FillGap',20,'MinLength',50);
figure, imshow(BW), hold on
max_len = 0;
for k = 1:length(lines)
xy = [lines(k).point1; lines(k).point2];
plot(xy(:,1),xy(:,2),'LineWidth',2,'Color','cyan');
plot(xy(1,1),xy(1,2),'x','LineWidth',2,'Color','red');
plot(xy(2,1),xy(2,2),'>','LineWidth',2,'Color','cyan');
end
for i = 1:length(lines)
velocityX(i) = lines(i).point2(1,1)-lines(i).point1(1,1);
velocityY(i) = -lines(i).point2(1,2)-lines(i).point1(1,2);
fprintf("the velocity vector of line %d is %fi %dj \n",i,velocityX(i),velocityY(i));
end
