Computer graphics processing and selective visual display system – Computer graphics processing – Animation
Reexamination Certificate
2005-08-30
2005-08-30
Zimmerman, Mark (Department: 2671)
Computer graphics processing and selective visual display system
Computer graphics processing
Animation
C345S474000, C345S475000
Reexamination Certificate
active
06937240
ABSTRACT:
In the present invention, for an unprocessed joint, a joint index and a joint rotation angle are obtained (S25, S27). For the unprocessed vertex corresponding to the obtained joint index, a vertex index and a weight w for the vertex are obtained. On the basis of the weight w and the rotation angle in the current frame, coordinate values of the vertex buffer are changed. A quarternion q1 according to the joint rotation angle in the current frame and a unit quarternion are sphere-linear interpolated with the weight w. From the resultant quarternion q, a conversion matrix R is determined for the joint. An overall conversion matrix M is obtained as M=RJTB, where a matrix T represents a relative coordinates from a parent joint, a matrix J represents a basic rotation angle, and B denotes a conversion matrix of the parent joint.
REFERENCES:
patent: 5877778 (1999-03-01), Dow et al.
patent: 6317130 (2001-11-01), Ishikawa et al.
patent: 6384819 (2002-05-01), Hunter
patent: 6515669 (2003-02-01), Mohri
patent: 10-074270 (1998-03-01), None
patent: 2000-242811 (2000-09-01), None
Beyer Weaver & Thomas LLP
Santiago Enrique L.
Square Enix Co., Ltd.
Zimmerman Mark
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