Title:
SYSTEM AND METHOD FOR INTERLINKING MACHINE VISION COORDINATE SPACES IN GUIDED ASSEMBLING ENVIRONMENT
Document Type and Number:
Japanese Patent JP2017037642
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method that interlink the coordinate spaces at two locations during calibration time using features on a runtime workpiece rather than a calibration target.SOLUTION: The features of the same workpiece are imaged and identified at first and second locations 122, 110. The imaged features of the runtime workpiece 124 differ at each location (CAD or measured workpiece representation is available). The first location which includes a motion stage is pre-calibrated to the motion stage using hand-eye calibration and the second location is calibrated to the same motion stage using hand-eye calibration by reciprocating the runtime workpiece between the two locations. The quality of the first two techniques can be improved by moving the runtime workpiece in their respective postures multiple times, extracting and storing the features at each location, and then interlinking the two coordinate spaces using the stored features.SELECTED DRAWING: Figure 1
Inventors:
GURUPRASAD SHIVARAM
CYRIL C MARRION JR
LIU LIFENG
LI TUOTUO
CYRIL C MARRION JR
LIU LIFENG
LI TUOTUO
Application Number:
JP2016152273A
Publication Date:
February 16, 2017
Filing Date:
August 02, 2016
Export Citation:
Assignee:
COGNEX CORP
International Classes:
G06T3/00; G01B11/00
Domestic Patent References:
| JP2010541293A | 2010-12-24 | |||
| JP2001284899A | 2001-10-12 |
Foreign References:
| US5547537A | 1996-08-20 | |||
| US20100017161A1 | 2010-01-21 |
Attorney, Agent or Firm:
Hiroyuki Kurihara
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