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7. Line Drawings From 3D Models
Half-Day, Sunday, 31 July, 1:45 - 5:30 pm
Room 502A
Level: Intermediate
Techniques for automated rendering of 3D models using sparse line drawing styles, for applications ranging from illustration through cartoons
and games. The course introduces concepts of visual perception; defines silhouettes, contours, creases, and suggestive contours; describes efficient algorithms for finding these lines; and presents methods for artistic stylization.
Prerequisites
Basic familiarity with the computer graphics
pipeline and some knowledge of calculus and linear algebra.
Intended Audience
Practitioners and researchers who would like a deeper understanding
of how NPR line drawings are created and why they are effective.
Organizer
Szymon Rusinkiewicz
Princeton University
Lecturers
Doug DeCarlo
Rutgers University
Adam Finkelstein
Princeton University
Schedule
| 1:45 |
I. Nonphotorealistic Rendering
- Why NPR?
- Techniques
Finkelstein
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| 2:15 |
II. Defining Lines on Surfaces
- Silhouettes and Contours
- Basics of Differential Geometry for Surfaces in 3D
- Suggestive Contours
Rusinkiewicz
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| 3 |
III. Line Drawings and Perception
- Line Drawings by Artists
- Information in Line Drawings
- Ambiguities
- Psychophysical studies
DeCarlo
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| 3:30 |
Break
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| 3:45 |
IV. Algorithms for Finding Lines
- Image-Space Algorithms
- Object-Space Algorithms and Acceleration Techniques
- Hybrid Algorithms
Rusinkiewicz
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| 4:15 |
V. Stylization of Line Drawings
- Visibility
- Parameterization
- Temporal Coherence
- User Interaction
Finkelstein
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| 5 |
VI. Abstraction and Evaluation
- Abstraction, Attention and Detail
- Evaluation of NPR Displays
DeCarlo
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