Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.



Published on

  • Be the first to comment

  • Be the first to like this


  1. 1. Graduate Professional Project Chance Harris April 10, 2007 Panel: Dr. Michael Korpi, Brian Elliott, Robert Darden
  2. 2. Project Overview <ul><li>Construct a 3D model of locations/scenarios from Justin Wilson’s script </li></ul><ul><li>Shoot green screen test footage </li></ul><ul><li>Test lighting scenarios </li></ul><ul><ul><li>Matching virtual lights with on-set lights </li></ul></ul><ul><ul><li>Green screen lighting for visual effects </li></ul></ul><ul><li>Composite footage into virtual sets </li></ul>
  3. 3. Software/Equipment Used <ul><li>Software </li></ul><ul><ul><li>Blender 3D </li></ul></ul><ul><ul><li>Shake </li></ul></ul><ul><ul><li>Sketchup Pro </li></ul></ul><ul><ul><li>Final Cut Pro </li></ul></ul><ul><li>Equipment </li></ul><ul><ul><li>Sony HDW F900 camcorder </li></ul></ul><ul><ul><li>Mac Pro </li></ul></ul>
  4. 4. Conceptualize <ul><li>Hand drawn map courtesy of Justin </li></ul>
  5. 5. Conceptualize cont’d <ul><li>Pictures… </li></ul>
  6. 6. Initial 3D modeling/lighting tests <ul><li>Best strategy for large scale modeling project </li></ul><ul><li>Software workflow (Blender, Sketchup, Shake) </li></ul><ul><li>Collaboration with Justin for overall lighting (“bluish nighttime”) </li></ul>
  7. 7. Acquisition/Creation of Elements <ul><li>Textures </li></ul>
  8. 8. Acquisition/Creation of Elements <ul><li>Use basic polygons in Blender 3D and Sketchup to create objects </li></ul><ul><li>Apply textures to finished models </li></ul>
  9. 9. Organize Objects <ul><li>Rough layout of streets, concrete, grass, crops, etc. </li></ul><ul><li>Add buildings according to the grid of streets </li></ul><ul><li>Gradual transition from downtown to rural </li></ul><ul><li>Pepper with details </li></ul><ul><ul><li>Street lights, dumpsters, fences, railroad, crates, tractor, etc. </li></ul></ul>
  10. 10. Lighting <ul><li>Very versatile…allows for lights to be placed, moved, articulated, dimmed, and colored very specifically.--- DEMO </li></ul><ul><li>Position lights </li></ul><ul><ul><li>Street lamps, accents, “global sun” </li></ul></ul><ul><li>Adjust specularity , reflectance, and translucence of objects </li></ul><ul><ul><li>Ex: window is very similar to white wall, except the window will have much higher translucence and specularity </li></ul></ul><ul><ul><li>Concrete tweaked to have low reflectance/specularity </li></ul></ul>
  11. 11. Cameras <ul><li>Equally versatile as lights </li></ul><ul><li>Ability to place, rotate, move, and manipulate properties (focus, lens type, aspect ratio, frame rate) </li></ul><ul><li>Add as many as I want </li></ul><ul><li>Animated or stationary </li></ul><ul><li>Helpful for composition before long renders </li></ul><ul><li>DEMO </li></ul>
  12. 12. Studio Work <ul><li>Test shots of Justin in front of the green screen </li></ul><ul><li>Natural lighting vs. even lighting </li></ul><ul><li>Determine best simulation for passing lights while driving </li></ul><ul><ul><li>Obstruct light, spin light, constant light…fix in post </li></ul></ul><ul><li>Swivel chair for camera moves </li></ul>
  13. 13. Shake Compositing <ul><li>Integrate footage with 3D renders </li></ul><ul><li>Extensive use of masks to make Justin appear “inside the car” </li></ul><ul><li>Color correcting (animations looked much “cleaner” that footage) </li></ul><ul><ul><li>Dirty up the animation </li></ul></ul><ul><ul><li>Advantages of stylized looks in Sin City and 300 </li></ul></ul><ul><li>Artificial lighting </li></ul><ul><li>Motion tracking and keyframing for simulated camera moves </li></ul>
  14. 14. Complications <ul><li>RENDERING TIME! </li></ul><ul><ul><li>30 second animation took almost 3 days </li></ul></ul><ul><ul><li>Textures and lighting = long renders </li></ul></ul><ul><ul><li>Importance of renderfarm </li></ul></ul><ul><ul><li>Pixar average of 6 hours/frame </li></ul></ul><ul><li>Motion Tracking </li></ul><ul><ul><li>Shake can only track in 2D, which makes a simulated camera rotation around the car very difficult to match. </li></ul></ul><ul><ul><li>3D tracking programs (PFTrack, Boujou) are very expensive </li></ul></ul>
  15. 15. Complications <ul><li>Lighting </li></ul><ul><ul><li>Balance between set lights and virtual sources is very delicate </li></ul></ul><ul><ul><li>Easier to have virtual sets lighted and rendered before shooting </li></ul></ul><ul><li>No green floor </li></ul><ul><ul><li>Had to shoot around this </li></ul></ul><ul><ul><li>No ability to include actor’s feet in shots </li></ul></ul>