.
A Unified Scheme for Adaptive Stroke-based Rendering
Hyung Woo Kang, Charles K. Chui, Uday K. Chakraborty.
The Visual Computer: International Journal of Computer Graphics, Vol. 22, No. 9, pp. 814--824,
2006. [BibTeX]
Image-based Painterly Rendering by Evolutionary Algorithm
Author(s): Uday K. Chakraborty, Hyung Woo Kang, Paul P. Wang.
Article: New Mathematics and Natural Computation, Vol. 3, No. 2, pp. 239--257,
2007.
[BibTeX] 
Abstract:
This paper presents an effective method based on genetic algorithm for optimizing the
rendering quality in image-based painterly rendering. Based on a multi-level evolutionary approach, the proposed method produces, for a variety of input images, results that are better in a statistically significant way than previous methods.
Interactive Sketch Generation
Hyung Woo Kang, Wenjie He, Charles K. Chui, Uday K. Chakraborty.
13th Pacific Conference on Computer Graphics and Applications (PG'05),
2005. [BibTeX]