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Method and system for inversion of detail-in-context presentations

  • US 6,727,910 B2
  • Filed: 08/20/2001
  • Issued: 04/27/2004
  • Est. Priority Date: 12/19/2000
  • Status: Expired due to Term
First Claim
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1. In a data processing system that executes a program of instructions, a method for inverting a distorted surface in a detail-in-context presentation comprising the steps of:

  • a) locating a first approximation point Pi for an inversion of a point X, wherein said point Pi is on an undistorted surface and said point X is on said distorted surface;

    b) obtaining a point PiD by displacing said point Pi onto said distorted surface by applying a distortion function D;

    calculating a magnitude of the difference |PiD

    X| between said point X and said PiD;

    determining whether said point Pi is acceptable for said inversion of said point X by comparing said magnitude of the difference to a tolerance δ

    ; and

    , selecting said tolerance δ

    as a fraction of a width of a pixel for a computer display surface wherein said fraction includes one half;

    c) locating a next approximation point Pi+1 for said inversion of said point X if said approximation point Pi is not acceptable for said inversion of said point X; and

    , d) repeating steps (b) and (c) until said approximation point is acceptable for said inversion of said point X.

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