Projection Mapping and You

Evan's talk on Projection Mapping theory and techniques for Openlab Workshops and Codasign's workshop on Projection Mapping, June 1012 http://openlabworkshops.org

Transcript

1. Projec'on  Mapping  and  You   A  20-­‐ish  minute  rant  by  Evan  Raskob  (pixelpusher)   for  hEp://openlabworkshops.org  with   hEp://codasign.com       Orinally  from  Dorkbot  #81  @  Ravensbourne,  London   May  30,  2012  
2. What  is  Projec'on  Mapping?  
3. OMG!  It’s  falling,  innit!  
7. Fine  Art-­‐y  
8. Chiaroscuro:  light/dark  
11. Which  side  is  brighter?  
12. Actual  brightness,  graphed:  
13. Proof!  
14. Behold:  The  Magic  Goblet  
16. Contrast  effects   •  hEp://web.mit.edu/persci/gaz/gaz-­‐teaching/ flash/contrast-­‐movie.swf  
18. Ligh'ng  direc'on  
20. Gestalt  Laws   •  Intermediate  spaces   •  Law  of  Proximity   –  Narrow  and  far   •  Invisible  shapes   •  The  smooth  curve:     –  Closure  (of  shapes)   •  Reversing  paEerns   –  Symmetry  (balance)  in  form  across  the  image   •  Con'nua'on,  Unity  in  the  whole     •  Common  Fate  (mo'on)    
21. Forced  Perspec've   •  Ames  Rooms  (Honi  Effect)  
22. Approxima'ons  of  Reality   •  Empirical  evidence  from  our  experience   •  Sta's'cal,  pragma'c  
23. Like  they  do  on  the  Discovery  Channel  
24. RAWR!!!!  
25. it  defies  be-­‐leaf  
26. Wood  you  believe  this  moth??  
27. WHAT  HAVE  I  DONE?   puns  aside…  
28. Before              /              A_er  !  
29. arbitrary  shapes  (3D?)  
30. What  I  Wanted   •  Teach  basic  concepts  of  fiang  video  /  imagery   into  arbitrary  shapes  
31. What  I  wanted   •  Hackable  (extensible)   plaborm  for  s'cking   Processing  sketches  into   arbitrary  shapes   •  Visual  edi'ng   •  Tin'ng  /  post-­‐render  FX   (blur,  glow)   •  Config  XML  file  saving  /   loading   •  wri'ng  to  movies   •  Performance  mode  
32. Thoughts   •  Anima'on  'meline  (sequence  of  events)  vs.   independent  sketches?   – loading  new  XML  configs  to  change  “scenes”     •  Mul'ple  projectors  synced?     •  Do  we  really  NEED  3D?  
33. Features!!!    Want!!!!!   •  BeEer  edi'ng  controls  (scale,   rotate)   •  3D  support??   •  Physics??  For  shapes   •  Kinect  object  scanning   •  BeEer  GUI  (many  small  fixes)   •  Undo  /  redo   •  Object  tracking  (people  follower?)   •  PEOPLE  WHO  ARE  INTERESTED   AND  ENJOY  SH*TTY  CODE  
34. GET  IT!  IT’S  FREE  LIKE  BEER.   hEp://github.com/pixelpusher/P5Projec'onMapping/    
35. The  So_ware,  etc.       Using  Processing  for  ease  of  coding  (some'mes)  and  maximum  portability,  and   community     3D  vs  2D?  Project  onto  3D  models  using  3D  models  as  a  guide?  (requires  all   sorts  of  math).  This  could  be  done  using  saitoobjloader:   hEp://code.google.com/p/saitoobjloader/     Other  libraries:       SurfaceMapper  (open  souce,  bezier  surfaces,  movie  support)   hEp://www.ixagon.se/surfacemapper/     Projected  Quads  from  Mar'n  Ingac:   hEp://marcinignac.com/blog/projectedquads-­‐source-­‐code/     Quase-­‐Cinema  Feijoada  VJ  so_ware   hEps://github.com/AlexandreRangel/QuaseCinemaFeijoada