1. A method for face model fitting comprising: receiving a first observed image; receiving a second observed image; and fitting an active appearance model of a third image to the second observed image and the first observed image with an algorithm that includes a first function of a mean-square-error between a warped image of the second observed image and a synthesis of the active appearance model and a second, function of a mean-square-error between the warped image of the second observed image and an appearance data of the first observed image.