Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2005-05-17
2005-05-17
Nguyen, Phu K. (Department: 2671)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
Reexamination Certificate
active
06894688
ABSTRACT:
A program which can render an object dynamically by using metaballs in a three-dimensional imaginary space is provided. All metaballs MB are disposed in an imaginary box IB, (r/R)2is calculated according to a calculation equation expressing a given solid shape of a metaball MB from a center of the metaball MB towards the minimum direction and the maximum direction of a voxel index of a voxel Vx for each vertex of the voxel Vx. At this time, a second-order divided difference is calculated, based upon the second-order divided difference and a first-order divided difference calculated last time the first-order divided difference is updated, and (r/R)2is calculated (S618and S634) Only two times of addition are performed by utilizing information on vertexes of the adjacent voxels Vx calculated last time, thereby a computation time for (r/R)2can be shortened.
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Kato Takao
Kim Jae-Young
Nakamura Satoshi
Tsuda Jumpei
Koei Co., Ltd.
Nguyen Phu K.
Wong Wean Khing
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