Point and polygon representations have their respective merits in rendering objects. In this paper, we propose a novel hybrid multi-resolution approach, P-Quadtrees, to efficiently render highly detailed objects. P-Quadtrees are constructed from geometry images. Both point and polygon are tightly integrated into a uniform structure. While traversing the P-Quadtrees in rendering, the part of surface that face the viewer can be rendered by coarser quad mesh to reduce the numbers of rendering

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... tives. The shading details can be enhanced by hardware accelerated normal mapping. The view dependent LOD selects the finer hierarchy on silhouette, which is rendered by points. The rendering of large-scale model is greatly accelerated while the visual effect both at the surfaces and the silhouette is guaranteed.