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1. 发明授权

US09696143B2 Device for optical profilometry with conical light beams 有权
公开(公告)号：US09696143B2
公开(公告)日：2017-07-04
申请号：US14974011
申请日：2015-12-18
申请人： INSTITUT NATIONAL D'OPTIQUE
发明人： Daniel Lefebvre , Éric Samson , Michel Doucet , Sébastien Roy
IPC分类号： G01B11/24 , G01B11/12
CPC分类号： G01B11/24 , G01B11/12
摘要： There is described an optical system for sensing the surface of an object. The system comprises: a light source for emitting at least one light beam centered on the optical axis of the system; a light reflector for reflecting the at least one incident light beam to generate at least two hollow conical light beams centered on the optical axis and having different opening angles, the at least two reflected hollow conical light beams for illuminating the surface; and an image capture device for imaging the illuminated surface.

2. 发明授权

US11204241B2 Methods for measuring properties of rock pieces 有权
公开(公告)号：US11204241B2
公开(公告)日：2021-12-21
申请号：US16486065
申请日：2018-02-15
申请人： Her Majesty The Queen in Right of Canada as Represented by the Minister of Natural Resources Canada , Institut National d'Optique/National Optics Institute
发明人： Magella Bilodeau , Andre Demers , Daniel Lefebvre , Sebastien Roy
IPC分类号： G06K9/00 , G01B11/25 , G06T7/62 , G01N3/40 , G01N15/02 , G01N21/85 , G01N33/24 , G01N15/14
摘要： Provided herein is a method for measuring the size distribution and/or hardness of free falling rock pieces. The method comprises projecting at least one laser line on the falling rock pieces by a laser device; capturing images of the falling rock pieces at an angle from the at least one laser line by at least one camera; and obtaining size distribution data of the falling rock pieces based on data obtained from a topographical map generated from the captured images. Certain embodiments further comprise: obtaining at least one of the volume and area of individual rock pieces from the topographical map; conducting a data analysis on at least one of the volume and area measurements of the rock pieces to reduce at least one of sampling and measurement errors; determining the size distribution of the falling rock pieces based on the data analysis and, optionally, evaluating a rock hardness index for the rock. Further provided is a method comprising: producing two topographical maps of the pieces from captured images; and obtaining the volume of pieces from the topographical map by adding half-volumes from each of the topographical maps.

3. 发明申请

US20140168368A1 METHOD AND APPARATUS FOR TRIANGULATION-BASED 3D OPTICAL PROFILOMETRY 有权
标题翻译：用于基于三角形的3D光学特性的方法和装置
公开(公告)号：US20140168368A1
公开(公告)日：2014-06-19
申请号：US13718585
申请日：2012-12-18
申请人： INSTITUT NATIONAL D'OPTIQUE
发明人： Michel DOUCET , Michel Robert , Daniel Lefebvre
IPC分类号： G01B11/24 , H04N13/02
CPC分类号： H04N13/20 , G01B11/2518
摘要： 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.
摘要翻译：用于确定基于三角测量的光学轮廓测量系统的中心线的方法，补偿对象表面的反射率的空间变化。该方法包括在物体上设置发光线，发光线为与补偿线重叠的三角线; 捕获三角测量线和补偿线的图像; 对于沿着成像的三角测量线的每个位置，从成像的三角测量线和来自成像的补偿线的横向补偿曲线确定横向三角剖分轮廓; 确定由横向补偿曲线的倒数给出的横向校正曲线; 将横向三角剖面图与横向校正曲线相乘以获得校正的横向三角剖面; 计算校正横向三角剖面的中心。沿三角测量线位置确定的中心线形成中心线。公开了集成该方法的基于三角测量的光学轮廓测量系统的实施例。

4. 发明授权

US09131219B2 Method and apparatus for triangulation-based 3D optical profilometry 有权
标题翻译：用于基于三角测量的3D光学轮廓测量法的方法和装置
公开(公告)号：US09131219B2
公开(公告)日：2015-09-08
申请号：US13718585
申请日：2012-12-18
申请人： INSTITUT NATIONAL D'OPTIQUE
发明人： Michel Doucet , Michel Robert , Daniel Lefebvre
IPC分类号： H04N13/02 , G01B11/25
CPC分类号： H04N13/20 , G01B11/2518
摘要： 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.
摘要翻译：用于确定基于三角测量的光学轮廓测量系统的中心线的方法，补偿对象表面的反射率的空间变化。该方法包括在物体上设置发光线，发光线为与补偿线重叠的三角线; 捕获三角测量线和补偿线的图像; 对于沿着成像的三角测量线的每个位置，从成像的三角测量线和来自成像的补偿线的横向补偿曲线确定横向三角剖分轮廓; 确定由横向补偿曲线的倒数给出的横向校正曲线; 将横向三角剖面图与横向校正曲线相乘以获得校正的横向三角剖面; 计算校正横向三角剖面的中心。沿三角测量线位置确定的中心线形成中心线。公开了集成该方法的基于三角测量的光学轮廓测量系统的实施例。

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