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Computational Photography Introduction

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

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Computational Photography Introduction

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

  2. 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

  3. Textbooks • Mainly lecture notes, papers and online documents • Suggested readings: Computer Vision: Algorithms and Applications

  4. Today • Introductions • Why Computational Photography? • Overview of the course

  5. 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

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

  7. Animation Control and Synthesis • Goal: a novice user can animate and control a highly realistic human character quickly and easily

  8. Why ComputationalPhotography? A super-brief History of Artand its futile Search for Realism

  9. Depicting Our World: The Beginning Prehistoric Painting, Lascaux Cave, France ~ 13,000 -- 15,000 B.C.

  10. Depicting Our World: Middle Ages The Empress Theodora with her court. Ravenna, St. Vitale 6th c.

  11. Priests and Nuns in Procession. French ms. ca. 1300. Depicting Our World: Middle Ages

  12. Depicting Our World: Renaissance Piero della Francesca, The Flagellation (c.1469)

  13. Depicting Our World: Toward Perfection Jan van Eyck, The Arnolfini Marriage (c.1434)

  14. Depicting Our World: Toward Perfection Lens Based Camera Obscura, 1568

  15. Depicting Our World: Toward Perfection Lens Based Camera Obscura, 1568

  16. Depicting Our World: Toward Perfection Lens Based Camera Obscura, 1568

  17. Depicting Our World: Perfection! Still Life, Louis Jaques Mande Daguerre, 1837

  18. Depicting Our World: Realism?

  19. Flickr Paris

  20. Youtube

  21. Enter Computer Graphics...

  22. 3D geometry projection Simulation GRAPHICS physics Traditional Computer Graphics

  23. Traditional Computer Graphics

  24. State of the Art • Amazingly real • But so sterile, lifeless

  25. The richness of our everyday world Photo by Svetlana Lazebnik

  26. Beauty in complexity University Parks, Oxford

  27. Which parts are hard to model? Photo by Svetlana Lazebnik

  28. People On the Tube, London From “Final Fantasy”

  29. Faces / Hair From “Final Fantasy” Photo by Joaquin Rosales Gomez

  30. Urban Scenes Photo of l LA Virtual LA (SGI)

  31. Nature River Cherwell, Oxford

  32. + 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 The Realism Spectrum Computational Photography Computer Graphics Photography Realism Manipulation Ease of capture

  33. Virtual Real World • Campanile Movie http://www.debevec.org/Campanile/

  34. Parametric Reshaping of Human Bodies http://www.youtube.com/watch?v=9LJ-Gn5BM7A&feature=player_embedded

  35. Seam Carving for Content-Aware Image Resizing • Click here

  36. Next Lecture Pin-hole Camera Perspective projection matrix Image formation Plenoptic function

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