Polyhedral Morphing Using Feature-Based Surface Decomposition

MPEG Demos:

Jack and Jill

Jack and Jill

The male head consists of 3,426 triangles. The female head consists of 4,020 triangles. The feature nets (red) consist of 134 extremal vertices on each of the two polyhedra. All morphing trajectories are straight lines.


Doughnut Cup

Doughnut Cup

The doughnut consists of 4,096 triangles. The cup consists of 8,452 triangles. The feature nets (red) consist of 63 extremal vertices on each of the two polyhedra. Most morphing trajectories are straight lines, except for a few around the rim of the cup, where material was "routed" along curved paths to avoid self-intersections. The crumpled appearance of the morphing surface around the rim of the cup is due to the dramatic change in surface shape between the two polyhedra, combined with a rather coarse triangulation. The shape of the folds matches the feature net portions on the doughnut which map to the rim of the cup.


Tracy to Ruby

Tracy to Ruby

The human consists of 17,528 triangles. The triceratops consists of 5,660 triangles. The feature nets (red) consist of 185 extremal vertices on each of the two polyhedra. Most morphing trajectories are straight lines, except for a few around the rather flat tail, which was made to "inflate" slightly to avoid self-intersections.