Apparatus and method for converting line segment data to three-d

Details Apparatus and method for converting line segment data to three-d Apparatus and method for converting line segment data to three-d

1995-06-07

1997-07-15

Zimmerman, Mark K.

395143, G06T 1180

Patent

active

056490801

ABSTRACT:
An apparatus and method in which an operator can input a three-dimensional (3D) graphics to a graphic system by performing an operation that is as if he were sketching on a paper surface. A line segment of two-dimensional (2D) data is input through an input device such as a mouse, and is then temporarily stored in a storage device as well as being displayed on a 2D display screen. The line segment of 2D data is converted to 3D data when it obtains information in the depth direction based on its relationship to another line segment that constitutes a 3D graphics and has 3D data already. 3D data of line segments that have that data in addition to 2D data are stored in a storage device, and are projected by a projection conversion circuit onto a 2D projection plane that has been set by a visual field input device, so as to be converted to 2D data, which are then displayed on the display screen. Therefore, the line segments that have already been converted to 3D data are displayed on the display screen together with the line segments that have been input through the input device and still have only 2D data. An operator can construct a 3D graphics constituted of 3D line segments simply by inputting 2D line segments as if he were sketching.

REFERENCES:
patent: 5010502 (1991-04-01), Diebel et al.
patent: 5129054 (1992-07-01), Alstad et al.
patent: 5237647 (1993-08-01), Roberts et al.
patent: 5303337 (1994-04-01), Ishida
E. Sittas, "3D design reference framework", Computer-Aided design, vol. 23, No. 5, pp. 380-384. Jun. 1991.
Agui et al., "Solid Object Input System by Conformal Projection Method", Transactions of Information Processing Society of Japan, vol. 28, No. 1, pp. 20-28. Jan. 1987.

Affiliated with

Also associated with

Rating

Apparatus and method for converting line segment data to three-d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for converting line segment data to three-d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for converting line segment data to three-d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1498382