Computer graphics processing and selective visual display system – Computer graphics processing – Graphic manipulation
Reexamination Certificate
2005-11-01
2005-11-01
Brier, Jeffery (Department: 2672)
Computer graphics processing and selective visual display system
Computer graphics processing
Graphic manipulation
C345S646000, C345S660000, C345S649000, C345S629000
Reexamination Certificate
active
06961071
ABSTRACT:
A method is for inverting a distorted surface presentation into an undistorted surface presentation in a detail-in-context presentation system including the steps of: selecting an input point on the undistorted surface; calculating a vector from the input point to a reference viewpoint; locating a starting point lying above the distorted surface and on the vector; locating a first bracketing point for a first intersection point of the vector and the distorted surface lying above the distorted surface and on the vector; locating a second bracketing point for the first intersection point lying below the distorted surface, and below the first intersection point, but above any subsequent intersection points of the vector and the distorted surface; locating a midpoint between the first and second bracketing points; and, determining if the midpoint is an acceptable approximation for the first intersection point thus being an inversion point corresponding to the input point.
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Montagnese Catherine
Tigges Mark H. A.
Brier Jeffery
Conneely Joseph
Idelix Software Inc.
Ogilvy Renault LLP
Woods Eric
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