In this paper, we present a new geometry compression technique
particularly suitable for 3D mesh models of engineering class
-- architectural models, machine plants, factories, etc. We observe
that such models have a number of repeating features at various
levels of granularity. In most of the widely available models in
this class, the geometric description of such features are also
repeated.
A major distinctive aspect of our compression technique is that
repeating geometric features in the geometric model are automatically
discovered and then compactly encoded. The proposed method discovers
repetition first at the connected component level and then at the subcomponent
level across components and also at the aggregate component level.
The results from a straight forward implementation tried on large mesh models
downloaded from the net are extremely encouraging.
