Object shape expression apparatus

Details Object shape expression apparatus Object shape expression apparatus

1994-09-01

1998-05-19

Couso, Yon

Image analysis

Applications

3-d or stereo imaging analysis

345423, 356376, G06T 1720

Patent

active

057546800

ABSTRACT:
The object shape expression apparatus includes a surface data producing unit which produces three dimensional coordinate data of the object surface by impinging a slit light on the object. A surface orientation calculation means calculates tilted angle of normal lines extended from said object surface defined by said three dimensional coordinate data. An area dividing unit divides the three dimensional data into a plurality of sets such that the surface orientation included in each sets are within a predetermined range. Each of thus obtained sets of three dimensional coordinate data represents a single unit of areas conforming the object surface. A plane patch generator generates flat or curved plane patches for each of area to form a three dimensional model data representing the object. Since the object surface is divided into areas based on the surface orientation thereof, the portion changing its configuration greater is expressed by more areas.

REFERENCES:
patent: 4385361 (1983-05-01), Moates
patent: 4674869 (1987-06-01), Pryor et al.
patent: 4791482 (1988-12-01), Barry et al.
patent: 4802759 (1989-02-01), Matsumoto et al.
patent: 4819195 (1989-04-01), Bell et al.
patent: 4961154 (1990-10-01), Pomerantz et al.
patent: 4982438 (1991-01-01), Usami et al.
patent: 4997369 (1991-03-01), Shafir
patent: 5003498 (1991-03-01), Ota et al.
patent: 5027281 (1991-06-01), Rekow et al.
patent: 5102224 (1992-04-01), Uesugi et al.
patent: 5170352 (1992-12-01), McTamaney et al.
patent: 5189626 (1993-02-01), Colburu
patent: 5280542 (1994-01-01), Ozeki et al.
patent: 5280569 (1994-01-01), Tsujido
patent: 5369734 (1994-11-01), Suzuki et al.
patent: 5465323 (1995-11-01), Mallet
Schmitt et al, "Fast Segmentation of Range Images into Planar Regions, " Proceedings 1991 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp. 710-711, Jun. 1991.
Yang, et al. "An Overview of Geometric Modeling Using Active Sensing" IEEE Control Systems Mag. vol. 8, Iss:3, Jun. 1988, pp. 5-13.
Y. Chen et al., "Object Modeling by Registration of Multiple Range Images", Proceedings IEEE International Conference on Robotics and Automation, pp. 2724-2729 (Apr. 1991).
G.A. Bastov, et al., "Program Complex for Synthesizing Digital Models of the Surfaces of Complex Objects from Plane Images", Measurement Techniques, vol. 35, No. 3, pp. 293-297 (Mar. 1992).
EPO Search Report (93104419.2) dated Feb. 10, 1995.
K. Sato & S. Inokuchi, "Range-Imaging System Utilizing Nematic Liquid Crystal Mask", IEEE, at 657-661 (1987).

Affiliated with

Also associated with

Rating

Object shape expression apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Object shape expression apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Object shape expression apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1861502