Abstract : We propose a new compression method devoted to large structured
hexahedral meshes having discontinuities. It is dedicated to applications
such as visualization or physical simulations whose management
by any workstation or mobile device with limited memory
and bandwidth is critical. Our method relies on a multiresolution
analysis that generates a hierarchy of meshes at increasing resolutions.
Our technique also uses a discontinuity tracking feature for
their preservation, whatever the resolutions, and consequently maintains
a coherent geometry with respect to the original mesh. Experimental
results emphasize the quality of our compression, in terms of
both geometrical distortion and compression ratio.