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Test

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Test

  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>

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