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Stereological Techniques for Solid Textures Rob Jagnow MIT Julie Dorsey Yale University Holly Rushmeier Yale University

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Julie Dorsey Yale University. Holly Rushmeier Yale University. Stereological Techniques for Solid Textures. Rob Jagnow MIT. Objective. Given a 2D slice through an aggregate material, create a 3D volume with a comparable appearance. Real-World Materials. Concrete Asphalt Terrazzo - PowerPoint PPT Presentation

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Page 1: Stereological Techniques for Solid Textures

Stereological Techniquesfor Solid Textures

Rob Jagnow

MIT

Julie Dorsey

Yale University

Holly Rushmeier

Yale University

Page 2: Stereological Techniques for Solid Textures

Given a 2D slice through an aggregate material, create a 3D volume with a comparable appearance.

ObjectiveObjective

Page 3: Stereological Techniques for Solid Textures

Real-World MaterialsReal-World Materials

• Concrete

• Asphalt

• Terrazzo

• Igneous

minerals

• Porous

materials

Page 4: Stereological Techniques for Solid Textures

Independently Recover…Independently Recover…

• Particle distribution

• Color

• Residual noise

Page 5: Stereological Techniques for Solid Textures

Recovering ColorRecovering Color

Select mean particle colors fromsegmented regions in the input image

Input Mean ColorsSyntheticVolume

Page 6: Stereological Techniques for Solid Textures

Recovering NoiseRecovering NoiseHow can we replicate the noisy appearance of the input?

- =

Input Mean Colors Residual

The noise residual is less structured and responds well to

Heeger & Bergen’s method

Synthesized Residual

Page 7: Stereological Techniques for Solid Textures

without noise

Putting it all togetherPutting it all together

Input

Synthetic volumewith noise

Page 8: Stereological Techniques for Solid Textures

Prior Work – RevisitedPrior Work – Revisited

Input Heeger & Bergen ’95 Our result

Page 9: Stereological Techniques for Solid Textures

Results – Physical DataResults – Physical Data

PhysicalModel

Heeger &Bergen ’95

Our Method

Page 10: Stereological Techniques for Solid Textures

ResultsResultsInput Result

Page 11: Stereological Techniques for Solid Textures

ResultsResults

Input Result

Page 12: Stereological Techniques for Solid Textures

An Approximate Global Illumination System for Computer Generated Films

Eric TabellionPDI / DreamWorks

Arnauld LamorlettePDI / DreamWorks

Page 13: Stereological Techniques for Solid Textures

IntroductionIntroduction(a) Direct and indirect lighting (b) Direct lighting only

Example of a character in outside lighting conditions.(a) and (b) were rendered respectively with and without indirect lighting.

Page 14: Stereological Techniques for Solid Textures

Ray Tracing Simplified GeometryRay Tracing Simplified Geometry

Simplified Geometry Micro-polygons Effective Ray Origin

To ray trace simplified geometry, we adjust the ray origin.

Page 15: Stereological Techniques for Solid Textures

Ray Tracing Simplified GeometryRay Tracing Simplified Geometry

(a) (b) (c)

(a) 2 million displaced micro-polygons, without using the ray offsetting algorithm.

(b) using the ray offsetting algorithm, ray tracing only 4 thousand polygons, shown in (c).

Page 16: Stereological Techniques for Solid Textures

Art DirectionArt Direction

(a) using a single bounce of indirect light

(b) using multiple bounces of indirect light

Page 17: Stereological Techniques for Solid Textures

Art DirectionArt Direction

(a) reference (b) saturated (c) warm (d) directional

Page 18: Stereological Techniques for Solid Textures

Art DirectionArt Direction

Page 19: Stereological Techniques for Solid Textures

Triple Product Wavelet Integrals for All-Frequency Relighting

Ren NgStanford University

Pat HanrahanStanford University

Ravi RamamoorthiColumbia University

Page 20: Stereological Techniques for Solid Textures

VideoVideo

Page 21: Stereological Techniques for Solid Textures

Simulating Water and Smoke with anOctree Data Stucture

Frank LosassoStanford University

Industrial Light + Magic

Ron FedkiwStanford University

Industrial Light + Magic

FredericStanford University

Page 22: Stereological Techniques for Solid Textures

VideoVideo

Page 23: Stereological Techniques for Solid Textures

A Method for Animating Viscoelastic Fluids

Tolga G. Goktekin James F. O’BrienAdam W. Bargteil

University of California, Berkeley

Page 24: Stereological Techniques for Solid Textures

VideoVideo


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