Method, apparatus and system for measuring a welding-groove position
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United States of America Patent
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Feb 2, 2010
Grant Date -
Jul 20, 2006
app pub date -
Jan 18, 2006
filing date -
Jan 18, 2005
priority date (Note) -
Expired
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Abstract
A method of measuring a welding-groove position for an over-lapped fillet welding of thin members, comprising a projection step of projecting a slit light so that the slit light is projected on both the thin members crossing a welding-groove face, a two-dimensional image acquisition step of capturing the slit-light image projected on each of the thin members as two-dimensional images; a three-dimensional conversion step of converting the two-dimensional images into three-dimensional images using a predetermined three-dimensional conversion parameter, and a calculation step of calculating the welding-groove position based on the three-dimensional data of the projected slit-light images, and relative positions between the projected slit-light images in the three-dimensional data defined by shapes and arrangement of the thin members.
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