1. A method of amplifying temporal variation in at least two images, the method comprising: converting two or more images to a transform representation; for each spatial position within the two or more images, examining a plurality of coefficient values; calculating a first vector based on the plurality of coefficient values, the first vector representing change from a first image to a second image of the at least two images describing deformation; modifying the first vector to create a second vector; calculating a second plurality of coefficients based on the second vector.