Rectifiy image of DVD cover

Question

I'm trying to get the cover image of a DVD as a rectangular image from a photo. Now as the cover on the photo is usually a bit skewed I need to rectify it programmatically. I've already removed most of the surroundings using the Laplacian of Gauss filter, but now I need to find the borders of the cover and somehow fill the whole frame with the coverimage. I thought of using the Hough-Transformation, but this seems to be pretty brute-force for linking edges. I want to run this on a Windows RT Device (Surface), so a low-level idea for C# would be great. Any ideas?

Answer 1

You should look into OpenCV and the image segmentation parts. After that you can perform a skew / shear transformation on the 2D image.