標題: Tighter error bounds and weighted error metrics for hierarchical radiosity
作者: Chang, CC
Shih, ZC
資訊工程學系
Department of Computer Science
關鍵字: global illumination;error analysis;radiosity;visibility;shadow
公開日期: 1-四月-1998
摘要: In this paper we first derive a tighter error bound on form factors as a subdivision criterion for the hierarchical radiosity algorithm. Such an error bound can reduce more unnecessary links and improve the performance of the hierarchical radiosity algorithm to meet a user-specified error tolerance. We then propose a weighted error metric in form factor computation such that more effort is automatically applied to shadow boundaries. Evaluating form factors along shadow boundaries with a higher degree of precision should enhance the quality of human perception. Using the proposed tighter error bound on the weighted error metric, we not only improve the performance but also increase the accuracy of the hierarchical radiosity algorithm. (C) 1998 John Whey & Sons, Ltd.
URI: http://hdl.handle.net/11536/32705
ISSN: 1049-8907
期刊: JOURNAL OF VISUALIZATION AND COMPUTER ANIMATION
Volume: 9
Issue: 2
起始頁: 53
結束頁: 63
顯示於類別:期刊論文


文件中的檔案:

  1. 000073636900002.pdf