Orientable Textures for Image-Based Pen-and-Ink Illustration

Overview

We've built a system for creating pen-and-ink illustrations that uses three components: darkness, texture, and orientation. Previous systems have used the first two. To allow the user to specify the third one, orientation, we have built an interactive direction field editor in which the user effectively 'paints' directions onto the illustration. The system then automatically creates the illustration at the requested output scale.

See the paper, available at the bottom of this page, for details.

Here are some illustrations we've made with our system.

We created these illustrations attempting to closely follow pen-and-ink examples in art textbooks. The teapots are differently scaled versions of the same source components.


Books	Small teapot	Teapot	Teapot closeup

Here is an example of an oriented leaf texture.

Tree

Here is a visualization of curvature information of a surface. The directions and darknesses in this case were computed from the mathematical surface instead of created and edited by the user.

Vectors

And here are some examples of illustrations containing hard-to-model surfaces such as hair and fur.


Hair and Face	Raccoon	Raccoon detail

Personnel

Michael Salisbury - Graduate
Michael Wong - Post-Baccalaureate
John Hughes - Brown University
David Salesin - Professor

Publications

Orientable Textures for Image-Based Pen-and-Ink Illustration Michael P. Salisbury, Michael T. Wong, John F. Hughes, and David H. Salesin. To appear in SIGGRAPH 97.
[Compressed PostScript file, 2.3M]

<salisbur@cs.washington.edu>
<mtwong@cs.washington.edu>
<jfh@cs.brown.edu>
<salesin@cs.washington.edu>

Last updated on June 9, 1997.