Triangulated irregular network (TIN) can produce terrain meshes with a reduced triangle count compared to regular grid. At the same time, TIN meshes are more challenging to optimize in real-time in comparison to other approaches. This paper explores efficient generation of view-dependent, adaptive TIN meshes for terrain during runtime with no or minimal preprocessing. This is achieved by reducing the problem of mesh simplification to that of inexpensive 2D Delaunay triangulation and lifting it back to 3D. The approach and its efficiency is validated with suitable datasets.
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