Manga Colorization
Yingge Qu, Tien-Tsin Wong, Pheng-Ann Heng.
ACM Transcations on Graphics (Proc. of SIGGRAPH'06), Vol. 25, No. 3, pp. 1214--1220, July,
2006. [BibTeX]
Methods for two dimensional stroke based painterly rendering. Effects and applications
Levente Kovács.
University of Pannonia, Veszprém, Hungary,
2006. [BibTeX]
Modeling Plant Structures Using Concept Sketches
Fabricio Anastacio, Mario Costa Sousa, Faramarz Samavati, Joaquim A. Jorge.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 105--113, New York, NY, USA, June, ACM Press,
2006. [BibTeX]
Multi-scale line drawings from 3D meshes
Alex Ni, Kyuman Jeong, Seungyong Lee, Lee Markosian.
SI3D '06: Proceedings of the 2006 symposium on Interactive 3D graphics and games, pp. 133--137, New York, NY, USA, ACM Press,
2006. [BibTeX]
Natural-looking strokes for drawing applications
Author(s): Kyoko Murakami, Reiji Tsuruno, Etsuo Genda.
Article: The Visual Computer, Vol. 22, No. 6, pp. 415--423,
2006.
[BibTeX] [DOI] 
Abstract:
This paper presents an algorithm for generating realistic drawing strokes in real-time that can take on the appearance of pastels, charcoals, or crayons. The similarity between the pigment deposit patterns on paper surfaces produced by pastel strokes and the shadows/shades on illuminated paper surfaces have been investigated. Multiple paper textures have been prepared and the paper surfaces have been ascertained by illumination from various directions to represent strokes in arbitrary directions. These textures have been processed as if they could be used as a height field, and pigments deposited on the paper have been calculated using the height field and tablet inputs.
Non-Photorealistic Rendering in Context: An Observational Study
Tobias Isenberg, Petra Neumann, M. Sheelagh T. Carpendale, Mario Costa Sousa, Joaquim A. Jorge.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 115--126, New York, NY, USA, June, ACM Press,
2006. [BibTeX]
NPAR by Example: Line Drawing Facial Animation from Photographs
Yuan Luo, Marina L. Gavrilova, Mario Costa Sousa.
International Conference on Computer Graphics, Imaging and Visualisation (CGIV'06), pp. 514--521, Los Alamitos, CA, USA, IEEE Computer Society,
2006. [BibTeX]
Organic Labyrinths and Mazes
Hans Pedersen, Karan Singh.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 79--86, New York, NY, USA, June, ACM Press,
2006. [BibTeX]
Perceptually-motivated Non-Photorealistic Graphics
Holger Winnemöller.
Northwestern University, Evanston, Illinois, U.S.A.,
2006. [BibTeX]
Procedural Image Processing for Visualization
Xiaoru Yuan, Baoquan Chen.
Lecture Notes in Computer Science (2nd International Symposium on Visual Computing (ISVC). Lake Tahoe, Nevada. Nov 6-8), Vol. 4291, pp. 50--59, Springer Berlin / Heidelberg,
2006. [BibTeX]