Lit-Sphere extension for artistic rendering

Hideki Todo, Ken Anjyo, Shun'Ichi Yokoyama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The Lit-Sphere model proposed by Sloan et al. (Proceedings of Graphics Interface 2001, pp. 143-150, 2001) is a method for emulating expressive artistic shading styles for 3D scenes. Assuming that artistic shading styles are described by view space normals, this model produces a variety of stylized shading scenes beyond traditional 3D lighting control. However, it is limited to the static lighting case: the shading effect is only dependent on the camera view. In addition, it cannot support small-scale brush stroke styles. In this paper, we propose a scheme to extend the Lit-Sphere model based on light space normals rather than view space normals. Owing to the light space representation, our shading model addresses the issues of the original Lit-Sphere approach, and allows artists to use a light source to obtain dynamic diffuse and specular shading. Then the shading appearance can be refined using stylization effects including highlight shape control, sub-lighting effects, and brush stroke styles. Our algorithms are easy to implement on GPU, so that our system allows interactive shading design.

Original languageEnglish
Pages (from-to)473-480
Number of pages8
JournalVisual Computer
Volume29
Issue number6-8
DOIs
Publication statusPublished - Jun 2013

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All Science Journal Classification (ASJC) codes

  • Software
  • Computer Vision and Pattern Recognition
  • Computer Graphics and Computer-Aided Design

Cite this

Todo, H., Anjyo, K., & Yokoyama, SI. (2013). Lit-Sphere extension for artistic rendering. Visual Computer, 29(6-8), 473-480. https://doi.org/10.1007/s00371-013-0811-7