发明名称 |
METHOD AND APPARATUS FOR TRIANGULATION-BASED 3D OPTICAL PROFILOMETRY |
摘要 |
<p>A method for determining a centerline for a triangulation-based optical profilometry system, compensating for the spatial variations of the reflectance of an object's surface. The method comprises providing a luminous line on the object, the luminous line being a triangulation line superposed with a compensation line; capturing an image of the triangulation line and of the compensation line; for each position along the imaged triangulation line, determining a transverse triangulation profile from the imaged triangulation line and a transverse compensation profile from the imaged compensation line; determining a transverse correction profile given by the reciprocal of the transverse compensation profile; multiplying the transverse triangulation profile with the transverse correction profile to obtain a corrected transverse triangulation profile; computing a center of the corrected transverse triangulation profile. The centers determined at positions along the triangulation line form the centerline. Embodiments of a triangulation-based optical profilometry system integrating the method are disclosed.</p> |
申请公布号 |
CA2799705(A1) |
申请公布日期 |
2014.06.18 |
申请号 |
CA20122799705 |
申请日期 |
2012.12.19 |
申请人 |
INSTITUT NATIONAL D'OPTIQUE |
发明人 |
DOUCET, MICHEL;ROBERT, MICHEL;LEFEBVRE, DANIEL |
分类号 |
G01B11/245 |
主分类号 |
G01B11/245 |
代理机构 |
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地址 |
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