Table of Contents
Using NPR to Communicate Shape
Motivation
Photograph
Illustration
Technical Illustration
Illustrators Use of Lines
Level of Abstraction
Background
Background
Perception
PPT Slide
Shading in Technical Illustration
Diffuse shaded model I = kdka + kd max(0, L.n) with kd=1 and ka = 0.
Just Highlights and Edge Lines
Hand-Tuned Phong Shaded Image
State of the Art
Smallest Effective Difference
Smallest Effective Difference
PPT Slide
Shading used by Artists
Tints, Tones, and Shades
Creating Tones
Model Shaded using Tones
Using Color Temperature
Constant Luminance, with a Color Shift
Test your perception
PPT Slide
Creating Undertones
Model tone shaded with cool to warm undertones
Combining Tones with Undertones
Model shaded with tones and undertones
Undertones on Gray Model
Shaded Spheres
With and without Silhouettes
Shaded Spheres
Shading Formulas
Metallic Objects
Imitating Material Properties
Results
Results
Results
Future Work
Thanks...
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