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公开(公告)号：US20180218517A1
公开(公告)日：2018-08-02
申请号：US15886489
申请日：2018-02-01
发明人： Christian Schleith , Tom Jaeckel , Alexander Frey , Markus Basel
CPC分类号： G06T7/85 , G03B7/093 , G06K9/00201 , G06K9/2027 , G06K9/4604 , G06K9/4661 , G06K2209/40 , G06T7/97 , H04N5/2353 , H04N5/2357 , H04N13/189 , H04N13/207
摘要： A method for determining an exposure, in particular an exposure time, for a recording in a method for determining the 3D coordinates of an object is provided, in which a pattern is projected onto the object and the light reflected by the object is recorded. To improve such a method, a recording of the object is produced with a predetermined exposure, in particular exposure time. A mask image of this recording is produced, in which mask image the regions of the object lying within the measurement volume are depicted. The exposure, in particular the exposure time, for the recording is determined depending on the predetermined exposure, in particular exposure time, depending on the mean greyscale value in the regions, lying within the measurement volume, of the recording with a predetermined exposure and depending on an ideal greyscale value.
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公开(公告)号：US20230419471A1
公开(公告)日：2023-12-28
申请号：US18215739
申请日：2023-06-28
发明人： Christian Schleith , Stefan Dieball , Béla Pontai
IPC分类号： G06T7/00 , H04N23/56 , H04N23/90 , H04N23/695
CPC分类号： G06T7/0004 , H04N23/56 , G06T2207/30108 , H04N23/695 , G06T2207/10024 , H04N23/90
摘要： A surface inspection system for capturing surface defects of a surface to be checked, includes a camera system, an illumination system including one or more light sources, and an evaluation system. The evaluation system evaluates a brightness and/or color distribution of the surface to be checked in at least one image captured by the camera system and captures surface defects of the surface to be checked as local deviations in the brightness and/or color. The evaluation system is configured to assess a local deviation in the brightness and/or color as a surface defect when the local deviation appears brighter in at least one first subregion and darker in at least one second subregion than a surface region surrounding the local deviation, and/or different colors are dominant in different subregions.
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公开(公告)号：US20240168369A1
公开(公告)日：2024-05-23
申请号：US18516758
申请日：2023-11-21
发明人： Christian Schleith
CPC分类号： G03B21/54 , G01B11/254
摘要： A stripe projection system for three-dimensionally capturing the surface of a measurement object includes a projector configured to project a stripe pattern onto the measurement object and a digital camera for capturing the stripe pattern. The projector includes a binary amplitude mask having transparent and opaque regions. The amplitude mask has first stripe regions which extend in a first direction and in which the proportion of the opaque and of the transparent area proportions varies depending on a position in a second direction. In this case, it is provided that the first stripe regions each form a transition region between continuous opaque or transparent stripes extending in the first direction and alternate with these stripes in the second direction.
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公开(公告)号：US10853971B2
公开(公告)日：2020-12-01
申请号：US15886489
申请日：2018-02-01
发明人： Christian Schleith , Tom Jaeckel , Alexander Frey , Markus Basel
IPC分类号： G06T7/80 , G06T7/00 , G06K9/00 , H04N13/189 , G06K9/46 , H04N5/235 , G06K9/20 , H04N13/207 , G03B7/093
摘要： A method for determining an exposure, in particular an exposure time, for a recording in a method for determining the 3D coordinates of an object is provided, in which a pattern is projected onto the object and the light reflected by the object is recorded. To improve such a method, a recording of the object is produced with a predetermined exposure, in particular exposure time. A mask image of this recording is produced, in which mask image the regions of the object lying within the measurement volume are depicted. The exposure, in particular the exposure time, for the recording is determined depending on the predetermined exposure, in particular exposure time, depending on the mean greyscale value in the regions, lying within the measurement volume, of the recording with a predetermined exposure and depending on an ideal greyscale value.
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