High-speed triangulation-based 3-D imaging with orthonormal data projections and error detection

Harrison, Daniel; Weir, Michael P.

doi:10.1109/34.50627

“…[1][2][3][4][5][6][7][8][9][10][11] These methods can be roughly categorized into the following groups.…”

Section: Introductionmentioning

confidence: 99%

Rainbow three‐dimensional camera: new concept of high‐speed three‐dimensional vision systems

Zhang

¹

1996

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A novel principle of a high-speed 3-D camera is presented. This 3-D camera system is able to achieve the instantaneous full-frame 3-D imaging capabilities that no other commercially available 3-D image acquisition systems or 3-D rangefinders can currently achieve. There are no mechanical moving parts in this system, therefore the mechanical design can be very simple and reliable, and there is no ''eye-safe'' problem. The 3-D camera can be integrated using all off-the-shelf products, which leads to a very low production cost and short development period. The 3-D camera is also able to provide normal 2-D intensity image of the scene using a single camera, which will greatly facilitate the object recognition and the sensor fusion tasks in machine vision applications. Simulations and hardware experiments have been performed, and the results are presented.

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“…Raster Scanning device [5] --------------------------------------------------9 Mirror synchronized scanner [6] ------------------------------------------ ----------- ------------14 Stereo laser line reconstruction [14] ----------------------------------15 Linear and rotary laser scanner [15] -------------------------------------16 Top view, turn-table laser scanner [16] ---------------------------------17 Side view, turn-table laser scanner [16] ------------------------------- ----------18 Three Cartesian axis scanner [18] ------------------------------------1 --------------------------------------24 A photo of the constructed scanner - -------------------------------------25 PC interfacing with the scanner components - ----------------------- ------------------- --------------29 Focus adjustment using graph paper - ---------------------------------- ------------- ----------------------------------------33 (.c) file generated by C IN node for cylindrical scan - --------------38 (.c) file generated by CIN node for spherical scan - ---------------39 Beginning of DXF file format - -----------------------------------------------40 V lll -----------------------…”

mentioning

confidence: 99%

Novel Cylindrical/Spherical Scanner Configuration for Reverse Engineering

Samaan¹

2021

Preprint

0

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Laser scanners are often used in geometric reverse engineering to generate a CAD drawing out of an existing physical part. This often requires careful path planning to ensure the correct stand-off distance of the sensor, to prevent any collisions of the sensor with the target object and to prevent any scan occlusions in the resulting data. A dedicated system was constructed to collect data using a 3-axis cylindrical/spherical device. The benefit of this scanning system is the ability to scan completely around the target object, including the bottom of the object. A stripe-type laser diode is used along with a CCD camera. The target object sits on a transparent plexiglass table, which can be rotated 360⁰. Both the laser and the CCD are mounted on an arm, such that they can be traversed along a linear path, as well as being rotated 360⁰ around the table. This permits the device to scan in either spherical or cylindrical paths with 360⁰ rotation around the target object. This system allows for the quick scanning of any object while minimizing the number of occlusions in the resulting scan data.

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“…Raster Scanning device [5] --------------------------------------------------9 Mirror synchronized scanner [6] ------------------------------------------ ----------- ------------14 Stereo laser line reconstruction [14] ----------------------------------15 Linear and rotary laser scanner [15] -------------------------------------16 Top view, turn-table laser scanner [16] ---------------------------------17 Side view, turn-table laser scanner [16] ------------------------------- ----------18 Three Cartesian axis scanner [18] ------------------------------------1 --------------------------------------24 A photo of the constructed scanner - -------------------------------------25 PC interfacing with the scanner components - ----------------------- ------------------- --------------29 Focus adjustment using graph paper - ---------------------------------- ------------- ----------------------------------------33 (.c) file generated by C IN node for cylindrical scan - --------------38 (.c) file generated by CIN node for spherical scan - ---------------39 Beginning of DXF file format - -----------------------------------------------40 V lll -----------------------…”

mentioning

confidence: 99%

Novel Cylindrical/Spherical Scanner Configuration for Reverse Engineering

Samaan¹

2021

Preprint

0

View full text Add to dashboard Cite

Laser scanners are often used in geometric reverse engineering to generate a CAD drawing out of an existing physical part. This often requires careful path planning to ensure the correct stand-off distance of the sensor, to prevent any collisions of the sensor with the target object and to prevent any scan occlusions in the resulting data. A dedicated system was constructed to collect data using a 3-axis cylindrical/spherical device. The benefit of this scanning system is the ability to scan completely around the target object, including the bottom of the object. A stripe-type laser diode is used along with a CCD camera. The target object sits on a transparent plexiglass table, which can be rotated 360⁰. Both the laser and the CCD are mounted on an arm, such that they can be traversed along a linear path, as well as being rotated 360⁰ around the table. This permits the device to scan in either spherical or cylindrical paths with 360⁰ rotation around the target object. This system allows for the quick scanning of any object while minimizing the number of occlusions in the resulting scan data.

show abstract

High-speed triangulation-based 3-D imaging with orthonormal data projections and error detection

Cited by 7 publications

References 11 publications

Rainbow three‐dimensional camera: new concept of high‐speed three‐dimensional vision systems

Rainbow three‐dimensional camera: new concept of high‐speed three‐dimensional vision systems

Novel Cylindrical/Spherical Scanner Configuration for Reverse Engineering

Novel Cylindrical/Spherical Scanner Configuration for Reverse Engineering

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