.
Multiple illuminated paper textures for drawing strokes
Kyoko Murakami, Reiji Tsuruno, Etsuo Genda.
Computer Graphics International 2005 (CGI'05), pp. 156--161, 22-24 June,
2005. [BibTeX]
Pastel-like Rendering Considering the Properties of Pigments and Support Medium
Kyoko Murakami, Reiji Tsuruno.
SIGGRAPH 2002 Sketches,
2002. [BibTeX]
Polygon-based Pastel-like Rendering for Animation
Kyoko Murakami, Reiji Tsuruno.
Sketches SIGGRAPH 2003,
2003. [BibTeX]
Strokes for Drawings Using Illuminated Paper Surfaces
Kyoko Murakami, Reiji Tsuruno, Etsuo Genda.
SIGGRAPH 2004 sketches,
2004. [BibTeX]
Trans-Polygon Stroke Method for Frame Coherent Pastel Images
Author(s): Kyoko Murakami, Reiji Tsuruno.
Proceedings: Eurographics 2003 - Short Presentations,
2003.
[BibTeX] 
Abstract:
We propose Trans-Polygon Stroke Method (TPSM) for creating pastel-like animation that keeps frame-to-frame coherence. There are several variable factors in hand-drawn pastel such as paper roughness and pigments. When these factors are simulated in computer graphics animation, they cause flickers, which reduces visibility. To increase the visibility of pastel-like animation by reducing the flickers, it is need to fix the factors. The procedure of the TPSM is to (1) model objects with quadrilateral polygons, (2) generate particles on the polygons, (3) give a vector direction to each particle, and (4) draw a line from the particle to the n-th polygon along with the direction. Besides the TPSM, the amount of pigments used for one stroke is read from a given table to fix this variable factor. We demonstrate several types of drawn strokes, such as hatching, stipple, and blending, using the proposed method.