2 research outputs found
Simplification of vector fields over tetrahedral meshes
Vectorfields produced by experiments or simulations are usually
extremely dense, which makes their manipulation and visualization
cumbersome. Often, such fields can be simplified without much loss of
information.
A simplification method for 3D vector fields defined over tetrahedral
meshes is presented. The underlying tetrahedral mesh is progressively
simplified by successive half-edge collapses. The order of collapses is
determined by a compound metric which takes into account the field and
domain error incurred as well as the quality of the resulting mesh.
Special attention is given to the preservation of the mesh boundary and
of critical points on the vector field.
A tool has been developed for the measurement of the difference between
two vector fields over tetrahedral meshes, and it is used to quantify
the simplification error