Apparatus and method of automatically creating supplemental segm

Details Apparatus and method of automatically creating supplemental segm Apparatus and method of automatically creating supplemental segm

1995-04-26

1998-09-08

Teska, Kevin J.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345441, G06T 1740

Patent

active

058058583

ABSTRACT:
The present invention is directed to an apparatus for and a method of automatically creating a supplemental segment in two-dimensional drawings. Two-dimensional drawing data concerning at least three views depicted based on orthogonal projection is previously stored in a drawing data storage device. Knowledge for recognizing three-dimensional solid model restored on the basis of the two-dimensional drawing data is previously stored in a knowledge storage device. The knowledge stored in the knowledge storage device is applied to the two-dimensional drawing data stored in the drawing data storage device, so that the three-dimensional solid model restored on the basis of the two-dimensional drawing data is recognized. An area where the supplemental segment is to be created is determined in the two-dimensional drawings on the basis of the recognized three-dimensional solid model. At least two end points of the supplemental segment to be created are determined in the determined area. The supplemental segment connecting the determined end points is finally created.

REFERENCES:
patent: 5010502 (1991-04-01), Diebel et al.
patent: 5101475 (1992-03-01), Kaufman et al.
patent: 5428715 (1995-06-01), Suzuki
patent: 5467293 (1995-11-01), Summer et al.
patent: 5561748 (1996-10-01), Niu et al.
Tomiyama et al., "Auxiliary Lines in Three View Drawings," IEEE Int. Conf. on Sys. Eng., Sep. 17-19, 1992, pp. 250-256.
Kitajima et al., "Reconstruction of CSG Solid," IEEE Int. Conf. on Sys. Eng., Sep. 17-19, 1992, pp. 220-224.

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