How to do De-Houghing of a Hough transform'ed Image?

1. How do you find the lines in an image using the Hough transform?
2. What is Hough transform in image processing?
3. How does the Hough transform work?

How do you find the lines in an image using the Hough transform?

Detect Lines in Images Using Hough

Find the edges in the image using the edge function. BW = edge(rotI,'canny'); imshow(BW); Compute the Hough transform of the binary image returned by edge . [H,theta,rho] = hough(BW);

What is Hough transform in image processing?

The Hough transform is a popular feature extraction technique that converts an image from Cartesian to polar coordinates. Any point within the image space is represented by a sinusoidal curve in the Hough space.

How does the Hough transform work?

The Hough transform takes a binary edge map as input and attempts to locate edges placed as straight lines. The idea of the Hough transform is, that every edge point in the edge map is transformed to all possible lines that could pass through that point.