1. Don Norman’s Fall 2003 Seminar 8-Dimensional Digital Photography for Historical Preservation Jack Tumblin jet@cs.northwestern.edu jet@cs.northwestern.edu

2. Museum Challenge The Vast Lonely Warehouse, $tarved Share, Preserve, and Educate (aquire, restore, explore…) Can’t we do better than just web photos?

3. Better: Other, Multiple Viewpoints? Paul Rademacher, “Multiple Center of Projection Images” SIGGRAPH1998

4. Malzbender,HPlabs “ Polynomial Texture Maps ” SIGG2001 Better: Variable Lighting? Get: Interactive synthetic re-lighting... Find: just 6 coeffs/pixel

5. A Complete ‘Optical Archive’ ? SIGGRAPH 1996: ‘4D Light Fields’ or ‘Lumigraph’: Camera AngularResolution: at camera? at camera? at surface pt? at surface pt? Levoy et al.Gortler et al.

6. Coupling Between:Coupling Between: –Orthographic camera, (x,y) positioned on sphere, ( ,  ) and –Orthographic projector, (x,y) positioned on sphere ( ,  ). F( x c, y c,  c,  c, x p, y p,  p,  p,, t) How: An ‘8-D Appearance Field’ camera cccc cccc

7. Coupling Between:Coupling Between: –Orthographic camera, (x,y) positioned on sphere, ( ,  ) and –Orthographic projector, (x,y) positioned on sphere ( ,  ). F( x c, y c,  c,  c, x p, y p,  p,  p,, t) How: An ‘8-D Appearance Field’ camera cccc cccc Projector (laser brick) pppp pppp

8. Conclusions Unified Ray ArchiveUnified Ray Archive More photos  completeMore photos  complete Preposterously huge, redundantPreposterously huge, redundant Many new tricks needed…Many new tricks needed…

9. end

10. Seitz: ‘View Morphing’ SIGG`96 http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.ht m http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.ht m http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.ht m http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.ht m Mix 2D and VERY SPARSE 3D data…

11. Seitz: ‘View Morphing’ SIGG`96 http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htmhttp://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htm

12. Seitz: ‘View Morphing’ SIGG`96 http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htmhttp://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htm

13. Seitz: ‘View Morphing’ SIGG`96 http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htmhttp://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htm

14. Seitz: ‘View Morphing’ SIGG`96 http://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htmhttp://www.cs.washington.edu/homes/seitz/vmorph/vmorph.htm

15. ‘Scene’ causes Light Field Light field: holds all outgoing light rays Shape,Position,Movement, BRDF,Texture,Scattering EmittedLight Reflected,Scattered, Light … Cameras capture subset of these rays.

16. ? Can we recover Shape ? Can you find ray intersections? Or ray depth?

17. ? Can we recover Surface Material ? Can you find ray intersections? Or ray depth? Ray colors might not match for non-diffuse materials (BRDF)