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Computational Photography Introduction Jinxiang Chai Computer Science and Engineering Texas A&M University

Computational Photography Introduction

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Computational Photography Introduction. Jinxiang Chai Computer Science and Engineering Texas A&M University. Computational Photography. Staff - Prof: Jinxiang Chai , Texas A&M University - office hours: TR: 11:00-11:50 AM - or by appointments Web Page - PowerPoint PPT Presentation

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Page 1: Computational Photography  Introduction

Computational Photography Introduction

Jinxiang Chai Computer Science and Engineering

Texas A&M University

Page 2: Computational Photography  Introduction

Computational Photography

• Staff - Prof: Jinxiang Chai, Texas A&M University - office hours: TR: 11:00-11:50 AM - or by appointments

• Web Page- http://faculty.cs.tamu.edu/jchai/spring2011/cp

Page 3: Computational Photography  Introduction

Textbooks

• Mainly lecture notes, papers and online documents

• Suggested readings: Computer Vision: Algorithms and Applications

Page 4: Computational Photography  Introduction

Today

• Introductions• Why Computational Photography?• Overview of the course

Page 5: Computational Photography  Introduction

A bit about me

• Jinxiang Chai- Ph.D in School of Computer Science, Carnegie Mellon

- Joined Texas A&M Univ. in 2006

• Research- Animation, Graphics and Vision

Page 6: Computational Photography  Introduction

VideoMocap

• Goal: capture human motion from single-camera video streams

Page 7: Computational Photography  Introduction

Animation Control and Synthesis

• Goal: a novice user can animate and control a highly realistic human character quickly and easily

Page 8: Computational Photography  Introduction

A super-brief History of Artand its futile Search for Realism

Why Computational Photography?

Page 9: Computational Photography  Introduction

Depicting Our World: The Beginning

Prehistoric Painting, Lascaux Cave, France~ 13,000 -- 15,000 B.C.

Page 10: Computational Photography  Introduction

The Empress Theodora with her court. Ravenna, St. Vitale 6th c.

Depicting Our World: Middle Ages

Page 11: Computational Photography  Introduction

Priests and Nuns in Procession. French ms. ca. 1300.

Depicting Our World: Middle Ages

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Depicting Our World: Renaissance

Piero della Francesca,The Flagellation (c.1469)

Page 13: Computational Photography  Introduction

Depicting Our World: Toward Perfection

Jan van Eyck, The Arnolfini Marriage (c.1434)

Page 14: Computational Photography  Introduction

Depicting Our World: Toward Perfection

Lens Based Camera Obscura, 1568

Page 15: Computational Photography  Introduction

Depicting Our World: Toward Perfection

Lens Based Camera Obscura, 1568

Page 16: Computational Photography  Introduction

Depicting Our World: Toward Perfection

Lens Based Camera Obscura, 1568

Page 17: Computational Photography  Introduction

Depicting Our World: Perfection!

Still Life, Louis Jaques Mande Daguerre, 1837

Page 18: Computational Photography  Introduction

Depicting Our World: Realism?

Page 19: Computational Photography  Introduction

Flickr Paris

Page 20: Computational Photography  Introduction

Youtube

Page 21: Computational Photography  Introduction

Enter Computer Graphics...

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GRAPHICS

Traditional Computer Graphics

3D geometry

physics

Simulation

projection

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Traditional Computer Graphics

Page 24: Computational Photography  Introduction

State of the Art

•Amazingly real•But so sterile, lifeless

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The richness of our everyday world

Photo by Svetlana Lazebnik

Page 26: Computational Photography  Introduction

Beauty in complexity

University Parks, Oxford

Page 27: Computational Photography  Introduction

Which parts are hard to model?

Photo by Svetlana Lazebnik

Page 28: Computational Photography  Introduction

People

From “Final Fantasy”

On the Tube, London

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Faces / Hair

Photo by Joaquin Rosales Gomez

From “Final Fantasy”

Page 30: Computational Photography  Introduction

Urban Scenes

Virtual LA (SGI)

Photo of l LA

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Nature

River Cherwell, Oxford

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The Realism Spectrum

+ easy to create new worlds+ easy to manipulate objects/viewpoint- Very hard to look realistic

+ instantly realistic+ easy to aquire- very hard to manipulate objects/viewpoint

Computer Graphics PhotographyComputationalPhotography

RealismManipulationEase of capture

Page 33: Computational Photography  Introduction

Virtual Real World

• Campanile Movie

http://www.debevec.org/Campanile/

Page 34: Computational Photography  Introduction

Parametric Reshaping of Human Bodies

http://www.youtube.com/watch?v=9LJ-Gn5BM7A&feature=player_embedded

Page 35: Computational Photography  Introduction

Seam Carving for Content-Aware Image Resizing

• Click here

Page 36: Computational Photography  Introduction

Next Lecture

Pin-hole Camera

Perspective projection matrix

Image formation

Plenoptic function