Hello. How to get a fit line by using Hough Transform? Currently I just got these points and it is not fully fit to the original black line. My goal is to get a fit line by using Hough Transform.

[Image Analyst]

I don't understand your goal It looks like it's finding the edge lines pretty well. What do you want? Do you want it to find a line in the middle of the black rectangle where there is no line at all?

[Irine Mila]

I mean, how to get a fit black rectangle edge by using Hough Transform? From the picture above, its not fully fit the black line.