Title:
自己校正するマルチカメラ機械視覚測定システム
Document Type and Number:
Japanese Patent JP4849757
Kind Code:
B2
Abstract:
An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and based on a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of two or more cameras used in the measuring system, and to use such measurements to calibrate the system. If the cameras move with respect to each other, their respective positions are calculated and used in subsequent measurements. The apparatus and method enable a machine vision measuring system to be used without field calibration at the time of installation.
Inventors:
Jackson, David A
Rob, Michael Jay
Donald El, Warchak
Rob, Michael Jay
Donald El, Warchak
Application Number:
JP2001569222A
Publication Date:
January 11, 2012
Filing Date:
March 16, 2001
Export Citation:
Assignee:
Snap-On Technologies, Inc.
International Classes:
G01B11/00; G01B21/00; G01B11/275; G01C11/06; G01C25/00; G01S5/16
Domestic Patent References:
| JP2001506369A | 2001-05-15 | |||
| JP2001501730A | 2001-02-06 |
Foreign References:
| WO1999022281A1 | 1999-05-06 | |||
| WO1998012503A1 | 1998-03-26 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai