How to get access of the individual houghlines detected in a image

After using houghlines to detect lines in a image I was able to get the image like this

http://oi55.tinypic.com/2yuezkk.jpg

Can someone explain how to get access to a individual line to detect the edge along that line only

Answer 1

[Sandhu]

P  = houghpeaks(H,5,'threshold',ceil(0.3*max(H(:))));

u can access hough line from here. in 'P' variable(2-d matrix) Hough lines coordinates will store. if u can take it out and use in a place where u need. check in P variable.

[Gova ReDDy]

But my requirement is to detect the edge along that line only.

Is this possible ?

[Sandhu]

ha ha ha ha.....

[Gova ReDDy]

So houghlines are only used to detect the lines in a image