Level-of-detail representation of bidirectional texture functions for real-time rendering

Wan Chun Ma*, Sung Hsiang Chao, Yu Ting Tseng, Yung Yu Chuang, Chun Fa Chang, Bing Yu Chen, Ming Ouhyoung

*此作品的通信作者

研究成果: 會議貢獻類型會議論文同行評審

20 引文 斯高帕斯(Scopus)

摘要

This paper presents a new technique for rendering bidirectional texture functions (BTFs) at different levels of detail (LODs). Our method first decomposes each BTF image into multiple subbands with a Laplacian pyramid. Each vector of Laplacian coefficients of a texel at the same level is regarded as a Laplacian bidirectional reflectance distribution function (BRDF). These vectors are then further compressed by applying principal components analysis (PCA). At the rendering stage, the LOD parameter for each pixel is calculated according to the distance from the viewpoint to the surface. Our rendering algorithm uses this parameter to determine how many levels of BTF Laplacian pyramid are required for rendering. Under the same sampling resolution, a BTF gradually transits to a BRDF as the camera moves away from the surface. Our method precomputes this transition and uses it for multiresolution BTF rendering. Our Laplacian pyramid representation allows real-time anti-aliased rendering of BTFs using graphics hardware. In addition to provide visually satisfactory multiresolution rendering for BTFs, our method has a comparable compression rate to the available single-resolution BTF compression techniques.

原文英語
頁面187-194
頁數8
DOIs
出版狀態已發佈 - 2005
事件I3D 2005: ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games - Washington, DC, 美国
持續時間: 2005 四月 32005 四月 6

其他

其他I3D 2005: ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
國家/地區美国
城市Washington, DC
期間2005/04/032005/04/06

ASJC Scopus subject areas

  • 軟體
  • 人機介面
  • 電腦繪圖與電腦輔助設計

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