SIGGRAPH 2012 presentation slides

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How the Fitting was Done

• Levenberg-Marquardt nonlinear optimization

• Yields a mean radiance and radiance distribution array

• These are then used as control points for Bezier

interpolation

• Albedo 0-1

Turbidity 1-10

Solar elevation 0-90°

320nm – 720nm bands, 40nm increment

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How the Fitting was Done • Levenberg-Marquardt nonlinear optimization • Yields a mean radiance and radiance distribution array • These are then used as control points for Bezier interpolation • Albedo 0-1 Turbidity 1-10 Solar elevation 0-90° 320nm – 720nm bands, 40nm increment

Results

Page 1 and 2: An Analytic Model for Full Spectral
Page 3 and 4: The Preetham Model • De facto sta
Page 5 and 6: Issues With the Preetham Model •
Page 7 and 8: • spectral (including UV) • lar
Page 9 and 10: Obtaining Reference Data
Page 11 and 12: Result: Comparison
Page 13: inputs Model flowchart once per sce
Page 17 and 18: UV & Fluorescence
Page 19: Conclusion • Reference implementa

SIGGRAPH 2012 presentation slides

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