The Painterly Approach
Wasinee Rungsarityotin, Victor Zordan.
Georgia Tech. - (Project: Advanced Topics in Rendering),
1996. [BibTeX]
The Virtual Painting Paintbox
Dominique Sobczyk, Vincent Boyer, Jean-Jaques Bourdin.
Short Presentations, Eurographics 2003,
2003. [BibTeX]
Turning Images into Simple Line-Art
Author(s): Samuel G. Noble.
Misc: Undergraduate Thesis, Reed College, December,
2001.
[BibTeX] 
Abstract:
This thesis presents a method for turning an image, such as a black and white photograph, into a set of simple strokes which can be drawn at any resolution. First is a brief survey of existing work in the field of non-photorealistic rendering. Next is an introduction to some standard image processing techniques, followed by a basic introduction to piecewise cubic curves. Finally, I explain how to assemble pixels into B-Splines and present a method for simplifying the curves which make up the strokes.
Varieties of Digital Painting
Alvy Ray Smith.
Tech Memo 8, Aug 30,
1995. [BibTeX]
VelvetPath - Layout Design System with Sketch and Paint Manipulations
Hiroaki Tobita.
2003. [BibTeX]