Coupled-View Active Appearance Models

This paper describes building models which represent the appearance of an object (in particular, a face) as seen from two or more dierent viewpoints simultaneously. A small number of 2D linear statistical models are suÆcient to capture the shape and appearance of a face from a wide range of viewpoints. Given multiple images of the same face we can learn a coupled model describing the relationship between the frontal appearance and the prole of a face. This relationship can be used to predict new views of a face seen from one view. Such a coupled model can be used to constrain search algorithms which seek to locate a face in multiple views simultaneously, leading to more robust results than searching each view independently. 1