1. Available at: [accessed 21 April 2011].
2. Linder W. Digital Photogrammetry: A Practical Course, 2006, 3rd edition (Springer, New York).
3. Available at: [accessed 21 April 2011].
4. Gonzalez RC, Woods RE. Digital Image Processing, 2002, 2nd edition (Prentice Hall, Upper Saddle River, NJ).