G - Physics – 09 – G
Patent
G - Physics
09
G
354/1
G09G 1/16 (2006.01)
Patent
CA 1283481
A METHOD FOR GLOBAL BLENDING OF COMPUTER MODELED SOLID OBJECTS USING A CONVOLUTION INTEGRAL Abstract of the Disclosure A method is provided for generating a plurality of points that lie on the surface of a blended solid model These points are obtained from the unblended solid model by a numerical solution to a convolution integral, wherein the convolution integral includes a spherically symmetric blending function with a size responsive to the blend radius desired for each of one or more regions on the solid model. For example, the spherical blending function may possess a constant valve everywhere inside a sphere of radius R, and a value of zero outside (here called a "hard sphere"), or it may be represented by other functions of the radial direction, more specifically, the gaussian bell curve, in which case it will be called a "gaussian sphere". The numerical solution to convolution integral is performed iteratively by placing the blending sphere at a plurality of locations along each of a set of rays that are defined substantially normal to and intersecting the solid model surface. The location on each ray at which the convolution integral is equal to a preselected value is stored. These stored locations may be used directly, or they may be used to defined a set of surfaces that interpolate the blend solid model.
564993
Caterpillar Inc.
Colburn Stephen
Kirby Eades Gale Baker
LandOfFree
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