CS 1950-G Computational Photography

Instructor: James HaysHTA: Patrick DoranUTA: Alex Collins

Today

1) Introductions

2) Syllabus

3) Why Computational Photography?

A bit about me

James HaysAssistant Professor in Computer ScienceRecent grad from CMU and recent postdoc at MIT

Research

Graphics and vision, especially scene understanding and image manipulation driven by "Internet-scale“ data

Thesis: Large Scale Scene Matching for Graphics and Vision

My Research

An Empirical Study of Context in Object Detection

A Brief History of Visual Media

Why Computational Photography?

Depicting Our World: The Beginning

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

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

Depicting Our World: Middle Ages

Nuns in Procession. French ms. ca. 1300.

Depicting Our World: Middle Ages

Depicting Our World: RenaissanceEast Doors (1452)North Doors (1424)

Lorenzo Ghiberti(1378-1455)

Depicting Our World: Renaissance

Piero della Francesca,The Flagellation (c.1469)

Depicting Our World: Toward Perfection

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

Depicting Our World: Toward Perfection

Lens Based Camera Obscura, 1568

Depicting Our World: Perfection!

Still Life, Louis Daguerre, 1837

‘Still photographs are the most powerful weapon in the world.”

Eddie Adams, Pulitzer Prize winning photographer.

Depicting Our World: Ongoing Quest

Pablo Picasso David Hockney

Enter Computer Graphics...

Traditional Computer Graphics

3D geometry

physics

Simulation

projection

State of the Art (10 years ago)

•Amazingly real•But so sterile, lifeless, futuristic (why?)

The richness of our everyday world

Photo by Svetlana Lazebnik

People

From “Final Fantasy”

On the Tube, London

Faces / Hair

Photo by Joaquin Rosales Gomez

From “Final Fantasy”

Creating Realistic Imagery

+ great creative possibilities

+ easy to manipulate objects/viewpoint-Tremendous expertise and work for realism

+ instantly realistic

+ easy to aquire

- very hard to manipulate objects/viewpoint

Computer Graphics PhotographyComputationalPhotography

RealismManipulationEase of capture

Building Rome in a Day

Sameer Agarwal, University of WashingtonYasutaka Furukawa, University of Washington

Noah Snavely, Cornell UniversityIan Simon, University of Washington

Steve Seitz, University of WashingtonRichard Szeliski, Microsoft Research

Patchmatch