Patent ID: 7324705

Claim:
An image distortion method comprising the steps of: (a) maintaining in computer memory a set of base data values representing an image to be subjected to a transformation function; (b) calculating an initial non identity approximation of the transformation function; (c) retrieving from computer memory one or more of the base data values; (d) calculating an intended magnification value (M c ) for one or more of the retrieved base data values; (e) calculating an estimated magnification value (M g ) for one or more of the retrieved base data values; (f) storing in computer memory the estimated magnification values as a set of transformed data values representing the transformed image; (g) calculating a difference (M E ) between the estimated magnification value(s) and the intended magnification value(s); and (h) repeating steps (c) to (g) until the difference M E is less than a predefined threshold.