Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Reexamination Certificate
2006-04-25
2006-04-25
Brier, Jeffery A. (Department: 2672)
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
C345S467000
Reexamination Certificate
active
07034830
ABSTRACT:
A method generates a two-dimensional distance field within a cell associated with a corner of a two-dimensional object. A set of boundary descriptors for the two-dimensional object is determined. A corner point in the cell is identified from the set of boundary descriptors. The corner point represents the corner of the object. The corner point partitions the set of boundary descriptors into two subsets. The cell is partitioned into two regions where one region is closest to the corner point and the other region is closest to the set of boundary descriptors. Two lines passing through the corner point are determined such that each line corresponds to one of the two subsets of boundary descriptors. These lines delimit the two regions. A set of values and a method using the two regions are specified for reconstructing the distance field within the cell. The corner point, the lines delimiting the two regions, the reconstruction method, and the set of values are stored in a memory to enable reconstruction of the distance field within the cell by applying the reconstruction method.
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Frisken Sarah F.
Perry Ronald N.
Brier Jeffery A.
Brinkman Dirk
Curtin Andrew J.
Mitsubishi Electric Research Laboratories Inc.
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