Patent ID: 7702489

Claim:
A method comprising: receiving a plurality of frames of training image data; for each frame, a processor determining a set of probabilities, the set of probabilities comprising a separate probability for each of a set of possible translations of a pixel in the frame, each probability in the set of probabilities providing the probability of a translation of a pixel in the frame given the frame; for each frame, determining a Fourier transform of the set of probabilities for the frame as ∑ T ⁢ ⁢ p ⁡ ( T ❘ f j ) ⁢ e - i ⁢ ⁢ αω ⁢ ⁢ T where the summation is performed over all translations in the set of possible translations, T is a translation, f j is the frame, and p(T|f j ) is the probability of translation T given frame f j ; using the Fourier transform to determine a Fourier transform of an estimate of a prototype pattern; determining the inverse Fourier transform of the Fourier transform of the estimate of the prototype pattern to form an estimate of the prototype pattern; using the estimate of the prototype pattern to form an image model; receiving test image data; and using the image model to convert the test image data into an image identification.