After 3D garment surface resampling, the topological graph of the resampling points should be reconstructed, that is a new triangular mesh can be generated. We exploit automatic method to generate topology of the mesh with total number of resampling points. In our approach, α-shapes based and ball-pivoting algorithm based surface reconstruction techniques are introduced respectively, α-shapes has an accurate shape approximated the original resampling points cloud, but exists large unwanted components. The ball-pivoting algorithm is selected to reconstruct the topological graph, as the principle is simple, the ball with given radius can pivot along an existing edge to touch another point to shape a new triangle. Eventually the 3D garment surface mesh reconstructed by the ball-pivoting algorithm has regular and uniform visual effect.
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