Shape data processing method

Details Shape data processing method Shape data processing method

1992-02-25

1994-06-21

Nguyen, Long T.

Boots, shoes, and leggings

36447422, G06F 1546

Patent

active

053233263

ABSTRACT:
Disclosed is a shape data processing method illustratively for use with a CAD,CAM (computed aided design/ computer aided manufacturing) system. The method involves measuring the volume of a target product based on the shape data of that product. In operation, a virtual projection surface is established for the target object to be measured. The surface of the object is divided into small regions. A column portion is formed as an extension from each small region to the projection surface. The volume of the column portion is measured for each small region. The measured volumes are accumulated in accordance with the orientation of the normal vector to each small region. This method allows the volume of the target object to be measured easily and with precision even if the shape thereof is complex.

REFERENCES:
patent: 4789931 (1988-12-01), Kuragano et al.
patent: 4819192 (1989-04-01), Kuragano et al.
Feinwerktechnik + Messtechnik vol. 98, No. 5, May 1990, Muenchen De pp. CA 146-CA 150 S. Bruno et al. `Freiformflachen graphisch-interaktiv digitalisieren` *abstract* * pg. CA 147, column 3, line 14-* pg. CA 148, column 3, line 10- * pg. CA 150, column 2, line 21-column 3, line 6 *
IEEE Computer Graphics and Applications vol. 9 No. 1, Jan. 1989, New York US pp. 26-39 R. B. Jerard et al. `Sculptured surfaces` * the whole document *
NTIS Tech Notes Aug. 1988, Springfield, Va. US pp. 660 1-660 2 `USAETL tests volume computation method` * the whole document *

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