Specific web references:

1. Affine Transformation http://homepages.inf.ed.ac.uk/rbf/HIPR2/affine.htm
2. Affine Transformations http://www.geom.uiuc.edu/docs/reference/CRC-formulas/node15.html
3. Affine Transformation (and cousins) http://www.leptonica.com/affine.html
4. Affine http://www.roborealm.com/help/Affine.php

Basic web references

1. Advanced Image Processing Lab http://www.eng.tau.ac.il/~yaro/lectnotes/
2. Digital Image Processing http://www.cs.nmt.edu/~ip/lectures.html

Books:

1. A.K.Jain, Fundamentals of Digital Image Processing, Prentice-Hall, 1989.
2. A.M.Tekalp, Digital Video Processing, Prentice-Hall, 1995.
3. A.Bovik, Handbook of Image Video Processing, Academic Press, 2000.
4. H.Stark and J.W.Woods, Probability, Random Processes, and Estimation Theory for Engineers, Prentice-Hall, 1994.
5. A.M.Yaglom, Correlation Theory of Stationary and Related Random Functions I: Basic Results, Springer-Verlag, 1987.
6. L.Breiman, Probability, SIAM, 1992.
7. H.V.Poor, An Introduction to Signal Detection and Estimation, 2nd Ed., Springer-Verlag, 1994.
8. A.Gersho and R.M.Gray, Vector Quantization and Signal Compression, Kluwer, 1992
9. M.Vetterli and J.Kovacevic, Wavelets and Subband Coding, Prentice-Hall, 1995.