.
Automatic Generation of Pencil Drawing from 2D Images Using Line Integral Convolution
Xiaoyang Mao, Yoshiyasu Nagasaka, Atsumi Imamiya.
7th International Conference on Computer Aided Design and Computer Graphics (CAD/GRAPHICS'01), pp. 240--248, August,
2001. [BibTeX]
Colored Pencil Filter with Custom Colors
Shigefumi Yamamoto, Xiaoyang Mao, Atsumi Imamiya.
12th Pacific Conference on Computer Graphics and Applications (PG'04), pp. 329--338, Seoul, Korea, October 06 - 08,
2004. [BibTeX]
Enhanced LIC Pencil Filter
Shigefumi Yamamoto, Xiaoyang Mao, Kenji Tanii, Atsumi Imamiya.
International Conference on Computer Graphics, Imaging and Visualization (CGIV'04), pp. 251--256, July,
2004. [BibTeX]
Interactive Hairstyle Modeling Using a Sketching Interface
Xiaoyang Mao, Kouichi Kashio, Hiroyuki Kato, Atsumi Imamiya.
International Conference on Computational Science (ICCS'02), PartII, pp. 131--140, April,
2002. [BibTeX]
Sketch Interface Based Expressive Hairstyle Modelling and Rendering
Xiaoyang Mao, Hiroki Kato, Atsumi Imamiya, Ken Anjyo.
Computer Graphics International (CGI'04), pp. 608--611, June,
2004. [BibTeX]
Sketchy hairstyles
Author(s): Xiaoyang Mao, Shiho Isobe, Ken Anjyo, Atsumi Imamiya.
Proceedings: Computer Graphics International 2005 (CGI'05), pp. 142--147, 22-24 June,
2005.
[BibTeX] [DOI] 
Abstract:
We present an intuitive, interactive modeling and rendering system for creating non-photorealistic hairstyle images. The main feature of our system lies in its user-friendly sketch interface that allows the user to generate his/her desired hairstyle simply by drawing a few free-form strokes on the 3D model of a scalp. Hairstyles are modeled with a polygon based technique called cluster polygons, and are rendered expressively to obtain non-photorealistic images similar to those found in hand-drawn animations and cartoons.