Implementation of modeling hair from multiple views

Modeling hair is difficult due to its complex geometry and reflectance properties [Marschner et al. 2003]. It often requires intensive user interactions. Paris et al. [Paris et al. 2004] developed an approach to capture hair geometry from a fixed viewpoint under controlled variable illumination. We developed a more practical approach in [Wei et al. 2005] that uses a hand-held camera under natural lighting conditions and does not require a specific setup. The success of this approach depends on good solutions for the following issues.