Figure 2.

(A) The heads were used to render two-dimensional (2D) facial images in the frontal (0°) and both profile views (±90°). A new set of head models was then generated by morphing both the shape and textural information of pairs of heads selected from a single training group. These new heads were then rendered to 2D facial images in left and right ±45° views. The images were then organized into sequences of five views. (B) The complementary sequence was also prepared in which the second head was seen in profile and the first head from the front, resulting in a total of 12 such sequences per training group.