1 | initial version |
If you pay attention those images seem rectified!
If you put both pictures of the result side by side, and draw a line from the points in the image on he right to the one in the left you have straight lines.
here are some good resources on this: http://blog.martinperis.com/search/label/Computer%20Vision http://shop.oreilly.com/product/9780596516130.do