.
A Resolution Independent Nonrealistic Imaging System for Artistic Use
Atsushi Kasao, Masayuki Nakajima.
IEEE International Conference on Multimedia Computing and Systems, pp. 358--367,
1998. [BibTeX]
Curvature-based stroke rendering
Suguru Saito, Akane Kani, Youngha Chang, Masayuki Nakajima.
The Visual Computer, Vol. 24, No. 1, pp. 1--11,
2008. [BibTeX]
Example-based color stylization based on categorical perception
Youngha Chang, Keiji Uchikawa, Suguru Saito, Masayuki Nakajima.
1st Symposium on Applied perception in graphics and visualization, pp. 91--98, ACM Press,
2004. [BibTeX]
Example-Based Color Stylization of Images
Youngha Chang, Suguru Saito, Keiji Uchikawa, Masayuki Nakajima.
ACM Transactions on Applied Perception (TAP), Vol. 2, No. 3, pp. 322--345, July,
2005. [BibTeX]
Example-based color transformation for image and video
Youngha Chang, Suguru Saito, Masayuki Nakajima.
3rd International Conference on Computer Graphics and Interactive Techniques in Australasia and South East Asia (GRAPHITE'05), pp. 347--353, Dunedin, New Zealand,
2005. [BibTeX]
Generation of Varying Line Thickness
Suguru Saito, Akane Kani, Youngha Chang, Masayuki Nakajima.
Computer Graphics International, pp. 294, Tokyo, Japan, July 09 - 11,
2003. [BibTeX]
Paintbrush rendering of lines using HMMs
Yuta Okabe, Suguru Saito, Masayuki Nakajima.
3rd International Conference on Computer Graphics and Interactive Techniques in Australasia and South East Asia (GRAPHITE'05), pp. 91--98, Dunedin, New Zealand,
2005. [BibTeX]
Volumetric Modeling of Colored Pencil Drawing
Author(s): Saeko Takagi, Masayuki Nakajima, Issei Fujishiro.
Proceedings: 7th Pacific Conference on Computer Graphics and Applications (PG'99), pp. 250--258, Seoul, Korea, October 05 - 07,
1999.
[BibTeX] [DOI] 
Abstract:
Not only photo-realistic rendering but non-photo-realistic rendering is considered an important research topic in artistic image synthesis. However, little attention has been given to colored pencil drawing. This paper proposes a volume graphics model for colored pencil drawing. The model consists of three sub-models, which describe in a volumetric fashion, the microstructure of paper, pigment distribution on paper, and pigment redistribution, respectively. The model takes advantage of volumetric offset distance accessibility and line integral convolution, and thus is highly controllable with a small number of parameters. A couple of synthesized color pencil drawing data sets are rendered using an existing volume visualizer to empirically prove that the model is descriptive enough to produce realistic images of colored pencil drawing.