Feature-preserving deformation of tessellated surfaces

The traditional displacement mapping techniques based on the height map suffer from stair-stepping artifacts. Further, in order to combine surface deformation and displacement mapping, complex operations such as Laplacian of surface should be performed by analyzing the surfaces. This paper proposes a novel 3D displacement mapping and map generation techniques, which overcomes the limitations of the existing techniques. Proposed displacement mapping algorithm reduces distortion of surface even though the surfaces are highly deformed. The displacement map generated by our method has the effect of the adaptive tessellation with no additional stage for determining LODs. The rendering performance is as fast as traditional displacement mapping.