Facial Animation - Computer Animation: Algorithms and Techniques - page 325

FIGURE 10.10
Feature points corresponding to the MPEG-4 FDPs [ 15 ] .
Laser scanners are capable of collecting information on intensity as well as depth, resulting in a
high-resolution surface with a matching high-resolution texture. However, once the face deforms,
the texture no longer matches exactly. Since the scanner revolves around the model, the texture res-
olution is evenly spread over the head. However, places are missed where the head is self-occluding (at
the ears and maybe the chin) and at the top of the head.
Texture maps can also be created from photographs by simply combining top and side views using
pixel blending where the textures overlap [ 1 ]. Lighting effects must be taken into consideration, and