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← Light and Rendering - Interactive 3D Graphics

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Showing Revision 3 created 05/25/2016 by Udacity Robot.

  1. There are any number of ways to figure out how much light arrives at each pixel
  2. to form an image. In theory, you could fully simulate the world around you.
  3. Photons start from a light source, hit atoms, and they're reflected, absorbed,
  4. and so on. You would a camera in this scene, and whatever very few photons
  5. actually happen to enter the camera's lens would then determine the image. As
  6. you might guess doing so would take a huge amount computation for even the most
  7. modest scene. A back of the envelope computation for a 40 watt bulb, shows that
  8. it emits about 10 to the 19th photons per second.