Synthesis of bidirectional texture functions on arbitrary surfaces

The bidirectional texture function (BTF) is a 6D function that can describe textures arising from both spatially-variant surface reflectance and surface mesostructures. In this paper, we present an algorithm for synthesizing the BTF on an arbitrary surface from a sample BTF. A main challenge in surface BTF synthesis is the requirement of a consistent mesostructure on the surface, and to achieve that we must handle the large amount of data in a BTF sample. Our algorithm performs BTF synthesis based on surface textons, which extract essential information from the sample BTF to facilitate the synthesis. We also describe a general search strategy, called the -coherent search, for fast BTF synthesis using surface textons. A BTF synthesized using our algorithm not only looks similar to the BTF sample in all viewing/lighthing conditions but also exhibits a consistent mesostructure when viewing and lighting directions change. Moreover, the synthesized BTF fits the target surface naturally and...

• Type: Journal
• Year: 2002
• Where: TOG
• Authors: Xin Tong, Jingdan Zhang, Ligang Liu, Xi Wang, Baining Guo, Heung-Yeung Shum
• Keywords: BTF Sample, Sample Btfs, Surface Btf Synthesis, TOG 2002