Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2007-05-15
2007-05-15
Chauhan, Ulka (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S422000
Reexamination Certificate
active
10808534
ABSTRACT:
A hidden line processing method includes the steps of obtaining the maximum value PZmaxof the Z-axis direction component of each vertex in a viewpoint coordinate system for each of the plurality of polygons; sorting the plurality of polygons in a descending order based on the obtained maximum values PZmax; obtaining a value LZminthat is the smaller of the Z-axis direction components in the viewpoint coordinate system of two end points of an arbitrary line obtained from the plurality of polygons; and comparing the maximum value PZmaxof the Z-axis direction component of the plurality of polygons with the value LZminthat is the smaller of the above obtained Z-axis direction components of the arbitrary line, in the sorted order, wherein at the time when LZmin≧PZmax, determination of whether or not the lines are hidden lines is avoided for polygons subsequent to the plurality of polygons sorted.
REFERENCES:
patent: 5220646 (1993-06-01), Fossum
patent: 5574835 (1996-11-01), Duluk et al.
patent: 5870095 (1999-02-01), Albaugh et al.
patent: 2003/0043148 (2003-03-01), Mei et al.
patent: 2004/0119710 (2004-06-01), Piazza et al.
patent: 5-067219 (1993-03-01), None
patent: 7-37120 (1995-02-01), None
patent: 9-305791 (1997-11-01), None
patent: 2000-268191 (2000-09-01), None
patent: 2003-187263 (2003-07-01), None
Chauhan Ulka
Prendergast Roberta
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