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Method for measuring the fidelity of warped image layer approximations in a real-time graphics rendering pipeline

  • US 6,064,393 A
  • Filed: 07/30/1997
  • Issued: 05/16/2000
  • Est. Priority Date: 08/04/1995
  • Status: Expired due to Term
First Claim
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1. In a real time graphics rendering pipeline, a method for measuring fidelity of a transformed image layer that approximates motion of 3D object geometry, comprising:

  • factoring a scene into scene elements, where the scene elements include a 3D object or set of 3D objects in the scene;

    independently rendering the scene elements to separate image layers;

    computing a 2D transform that approximates motion of a scene element from an initial frame to a current frame in an animation sequence;

    computing sampling distortion of the 2D transform;

    using the sampling distortion to determine whether to re-render the scene element for the current frame;

    approximating motion of the scene element by using the sprite transform to transform an initial rendering of the scene element at the initial frame to a new position in the current frame;

    compositing the image layers, including at least one transformed layer, into an output image in output device coordinates to construct each frame in the animation sequence.

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