Optics: measuring and testing – Shape or surface configuration – Triangulation
Reexamination Certificate
2011-01-25
2011-01-25
Toatley, Gregory J (Department: 2877)
Optics: measuring and testing
Shape or surface configuration
Triangulation
C356S602000
Reexamination Certificate
active
07876455
ABSTRACT:
A three-dimensional shape measuring apparatus includes a line laser light source (1) and an image capturing device (2). A three-dimensional shape measuring method and apparatus is characterized by irradiating a line laser beam to an object (3) to be measured from a laser projecting device, imaging points (6) irradiated with the laser beam by the image capturing device (2, detecting points on taken images as intersections (8), each of the points being detected from the taken images and being detected as a common point where line laser beams pass, deriving equations including the positions of the laser planes and the three-dimensional positions of the intersections as unknowns based on the detected intersections, determining the three-dimensional positions of the intersections and the positions of the laser planes by solving the derived equations as simultaneous equations, calculating by triangulation the three-dimensional positions of the points irradiated with the laser beams other than the intersections by using the positions of laser planes, and obtaining the three-dimensional shape of the object by repeating the series of processes.
REFERENCES:
patent: 4801207 (1989-01-01), Williams
patent: 6542249 (2003-04-01), Kofman et al.
patent: 6798527 (2004-09-01), Fukumoto et al.
patent: 2006/0055943 (2006-03-01), Kawasaki et al.
patent: A 08-086616 (1996-04-01), None
patent: 2003-130621 (2003-05-01), None
Szeliski, Richard and Sing Bing Kang, Recovering 3D Shape and MOtion from Image Streams using NOn-Linear Least Squares, Digital Equipment Corporation, Cambridge Research Lab, Mar. (1993).
Izquiero, M.A.G., M.T. Sanchez, A Ibanez, and L.G. Ullate, Sub-pixel measurement of 3D surfaces by laser scanning, Sensors and Actuators 76 (1999) 1-8.
Chang Woo Chu, Sungjoo Hwang and Soon Ki Jung, “Calibration-free Approach to 3D Reconstruction Using Light Stripe Projections on a Cube Frame,” Third International Conference on 3DIM (2001), pp. 13-19.
Hiroshi Kawasaki, “Three-Dimensional Shape Measuring Method and its Device,” U.S. Appl. No. 10/534,393, filed May 9, 2005.
Furukawa Ryo
Kawasaki Hiroshi
Oliff & Berridg,e PLC
Slomski Rebecca C
TechnoDream21 Co., Ltd.
Toatley Gregory J
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