Houghtransform: Hough line function

hello! I have to detect only the horizontal lines in the image using the hough transform.... but when i use houghline function n then plot the detected lines it plot both horizontal and vertical lines.... how can i remove the vertical lines??????????

Answer 1

[Image Analyst]

If you have the endpoints for all the lines, it should be rather straightforward - just delete those where the delta y of the endpoints is less than the delta x or some other delta that you want to use to define vertical.

[qjwgeuwe]

this is what i have

lines = houghlines(edge_img,theta,rho,pp,'FillGap',100,'MinLength',100);

figure, imshow(I), hold on

max_len = 0;

totlen = 0;

for k = 1:length(lines)

xy = [lines(k).point1; lines(k).point2];

plot(xy(:,1),xy(:,2),'LineWidth',1,'Color','green');

end

fimg= my edge image using sobel edge function

pp= hough peaks (for rho and theta lines)

theta=-90 to 90

rho= +/-sqrt diagonal of image

please correct it as per my objective.... thanks!

[Image Analyst]

But it doesn't look like you even made any sort of attempt to try my suggestion. Why not?

Fill in the code where you read in an image so I can run it. Hopefully you used a standard demo image that ships with MATLAB. Or else upload your image somewhere.

[qjwgeuwe]

please find the code and the image link in ur MSG box

[qjwgeuwe]

have you received???????

[qjwgeuwe]

please advise the solution.... i tried but getting no result...

[Image Analyst]

No. I don't have a message box. Where did you send it? Why don't you just edit your above question right here and add the code?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

[qjwgeuwe]

well the problem has been solved thanks for your suggestions.... :)