Patent ID: 6356280
Filing Date: 2002-03-12
Classification: G06T

Abstract:
A method comprising:providing a model of a geometric surface, said model comprising a set of portions of said geometric surface, said model being stored in a memory device, said model comprising a plurality of polygons; excising at least some of said portions of said geometric surface in response to the slope of said some of said portions; and displaying an image on a display device based on said geometric surface after said portions have been excised, wherein said polygons are excised in accordance with the formula:Max(A0, A1, . . . An)âˆ’Min(A0, A1, . . . An)where Max(A0, A1, . . . An) is the largest coordinate value of any of the polygon vertex coordinates along an axis, Min(A0, A1, . . . An) is the smallest coordinate value of any of the polygon vertex coordinates along said axis, and e is a threshold value.