METHOD, PROGRAM FOR THINNING THREE-DIMENSIONAL DATA, MANUFACTURE OF PROSTHETIC APPLIANCE FOR DENTISTRY AND THINNING DEVICE OF THREE-DIMENSIONAL DATA

摘要

PROBLEM TO BE SOLVED: To efficiently search for a proper thinning processing.;SOLUTION: The thinning method of this invention thins a plurality of pieces of three-dimensional data, reduces the pieces of data to the desired number of pieces of data and is provided with a network setting step for obtaining branches to constitute a group of routes by creating a plurality of routes by connecting the plurality of three-dimensional data so as to become the desired number of pieces of data, an error calculation step for calculating an interpolation error of the pieces of three-dimensional data to be thinned by the branches, a route searching step for calculating a 'proper route to a pass point on the way' in which the interpolation errors to be accumulated by passage of the branches as gradually tracing a group of routes in stages are minimized or defined as equal to or less than a tolerance and a thinning step for determining the proper route in which an accumulated value of the interpolation error is finally minimized or defined as equal to or less than the tolerance and for thinning the purality of pieces of three-dimensional data according to the proper route.;COPYRIGHT: (C)2003,JPO