caa a22 4500 605540683 CHVBK 20210128100912.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00371-014-0941-6 doi (NATIONALLICENCE)springer-10.1007/s00371-014-0941-6 Multi-resolution terrain rendering with GPU tessellation [Elektronische Daten] [HyeongYeop Kang, Hanyoung Jang, Chang-Sik Cho, JungHyun Han] GPU tessellation is very efficient and is reshaping the terrain-rendering paradigm. We present a novel terrain-rendering algorithm based on GPU tessellation. The planar domain of the terrain is partitioned into a set of tiles, and a coarse-grained quadtree is constructed for each tile using a screen-space error metric. Then, each node of the quadtree is input to the GPU pipeline together with its own tessellation factors. The nodes are tessellated and the vertices of the tessellated mesh are displaced by filtering the displacement maps. The multi-resolution scheme is designed to optimize the use of GPU tessellation. Further, it accepts not only height maps but also geometry images, which displace more vertices toward the higher curvature feature parts of the terrain surface such that the surface detail can be well reconstructed with a small number of vertices. The efficiency of the proposed method is proven through experiments on large terrain models. When the screen-space error threshold is set to a pixel, a terrain surface tessellated into 8.5 M triangles is rendered at 110 fps on commodity PCs. Springer-Verlag Berlin Heidelberg, 2014 Terrain rendering nationallicence GPU tessellation nationallicence Height map nationallicence Geometry image nationallicence Kang HyeongYeop Computer Science and Engineering, Korea University, Seoul, Korea aut Jang Hanyoung NCsoft, Seongnam, Korea aut Cho Chang-Sik Electronics and Telecommunications Research Institute, Daejeon, Korea aut Han JungHyun Computer Science and Engineering, Korea University, Seoul, Korea aut The Visual Computer Springer Berlin Heidelberg 31/4(2015-04-01), 455-469 0178-2789 31:4<455 2015 31 371 https://doi.org/10.1007/s00371-014-0941-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00371-014-0941-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kang HyeongYeop Computer Science and Engineering, Korea University, Seoul, Korea aut NATIONALLICENCE 700 1- Jang Hanyoung NCsoft, Seongnam, Korea aut NATIONALLICENCE 700 1- Cho Chang-Sik Electronics and Telecommunications Research Institute, Daejeon, Korea aut NATIONALLICENCE 700 1- Han JungHyun Computer Science and Engineering, Korea University, Seoul, Korea aut NATIONALLICENCE 773 0- The Visual Computer Springer Berlin Heidelberg 31/4(2015-04-01), 455-469 0178-2789 31:4<455 2015 31 371