| Residential College | false |
| Status | 已發表Published |
| Polygon splatting for multiple viewpoint rendering | |
| Sun Q.-J.1; Wang W.-C.1; Wu E.-H.1 | |
| 2002-07-01 | |
| Source Publication | Jisuanji Xuebao/Chinese Journal of Computers
 |
| ISSN | 02544164 |
| Volume | 25Issue:7Pages:737-746 |
| Abstract | This paper presents a new method for multiple viewpoint rendering to employ perspective coherence, which allows the viewpoint to be placed freely in the 3D space. At first, it creates an intermediate construct referred to as polygon splat for every polygon in the scene, which consists of a set of stripes, line segments parallel to the image plane and extracted from the polygon. As some linear relations between a stripe and its perspective projection with the viewpoint movement can be derived, polygons can be rendered stripe by stripe instead of the pixel-by-pixel manner used in the conventional scan conversion method, which greatly reduce the average cost for the ray cast from a pixel to intersect a polygon. For view independent shading and texture, they can be pre-computed and stored in the stripes to be reused to render high quality images by image-based rendering techniques to save a large amount of on-line shading and texture mapping calculations. In rendering, the farther the polygon is from the viewpoint, the fewer the stripes of the polygon are selected to represent the polygon. Thus, the new method can automatically implement the level-of-detail rendering without constructing many models of different levels of details. From experimental results, the new method is several times faster than the conventional scan conversion method for multiple viewpoint rendering. As the new method only aims to replace the scan conversion method in the rendering pipeline, it is easy to integrate with other efficient rendering methods such as visibility determination and shading methods to further improve the rendering efficiency. Also, the new method can be easily extended to render curve surfaces. |
| Keyword | Multiple viewpoint rendering Perspective projection Polygon splat Stripe |
| URL | View the original |
| Language | 英語English |
| Fulltext Access | |
| Document Type | Journal article |
| Collection | University of Macau |
| Affiliation | 1.Institute of Software Chinese Academy of Sciences 2.Universidade de Macau |
| Recommended Citation GB/T 7714 | Sun Q.-J.,Wang W.-C.,Wu E.-H.. Polygon splatting for multiple viewpoint rendering[J]. Jisuanji Xuebao/Chinese Journal of Computers, 2002, 25(7), 737-746. |
| APA | Sun Q.-J.., Wang W.-C.., & Wu E.-H. (2002). Polygon splatting for multiple viewpoint rendering. Jisuanji Xuebao/Chinese Journal of Computers, 25(7), 737-746. |
| MLA | Sun Q.-J.,et al."Polygon splatting for multiple viewpoint rendering".Jisuanji Xuebao/Chinese Journal of Computers 25.7(2002):737-746. |
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