Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Efficient Hair Rendering under Dynamic, Low-Frequency Environmental Light Using Spherical Harmonics
Title: | Efficient Hair Rendering under Dynamic, Low-Frequency Environmental Light Using Spherical Harmonics |
Authors: | Xing, Xiaoxiong Browse this author | Dobashi, Yoshinori Browse this author →KAKEN DB | Yamamoto, Tsuyoshi Browse this author →KAKEN DB | Katsura, Yosuke Browse this author | Anjyo, Ken Browse this author |
Keywords: | hair rendering | spherical harmonics | environmental light | voxelization |
Issue Date: | Feb-2015 |
Publisher: | The Institute of Electronics, Information and Communication Engineers (IEICE) |
Journal Title: | IEICE transactions on information and systems |
Volume: | E98D |
Issue: | 2 |
Start Page: | 404 |
End Page: | 411 |
Publisher DOI: | 10.1587/transinf.2014EDP7203 |
Abstract: | We present an algorithm for efficient rendering of animated hair under a dynamic, low-frequency lighting environment. We use spherical harmonics (SH) to represent the environmental light. The transmittances between a point on a hair strand and the light sources are also represented by SH functions. Then, a convolution of SH functions and the scattering function of a hair strand is precomputed. This allows us to efficiently compute the intensity at a point on the hair. However, the computation of the transmittance is very time-consuming. We address this problem by using a voxel-based approach: the transmittance is computed by using a voxelized hair model. We further accelerate the computation by sampling the voxels. By using our method, we can render a hair model consisting of tens of thousands of hair strands at interactive frame rates. |
Rights: | Copyright @2015 The Institute of Electronics, Information and Communication Engineers |
Type: | article |
URI: | http://hdl.handle.net/2115/59625 |
Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 土橋 宜典
|