The Experts below are selected from a list of 32748 Experts worldwide ranked by ideXlab platform
Kwan H Lee - One of the best experts on this subject based on the ideXlab platform.
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automated Laser Scanning System for reverse engineering and inspection
International Journal of Machine Tools & Manufacture, 2002Co-Authors: Seokbae Son, Hyunpung Park, Kwan H LeeAbstract:Recently, Laser scanners have been used more often for inspection and reverse engineering in industry, such as for motors, electronic products, dies and molds. However, due to the lack of efficient Scanning software, Laser scanners are usually manually operated. Therefore, the tasks that involve inspection and reverse engineering processes are very expensive. In this research, we propose an automated measuring System for parts having a freeform surface. In order to automate a measuring process, appropriate hardware System as well as software modules are required. The hardware System consists of a Laser Scanning device and setup fixtures that can provide proper location and orientation for the part to be measured. The software modules generate optimal scan plans so that the Scanning operation can be performed accordingly. In the scan planning step, various Scanning parameters are considered in the generation of optimal scan paths, such as the view angle, depth of field, the length of the stripe, and occlusion. In the Scanning step, the generated scan plans are downloaded to the industrial Laser scanner and the point data are captured automatically. The measured point data sets are registered automatically and the quality of point data is evaluated by checking the difference between the CAD model and the measured data. To demonstrate an automated measuring System, a motorized rotary table with two degrees of freedom and a CNC-type Laser scanner with four degrees of freedom are used.
Seokbae Son - One of the best experts on this subject based on the ideXlab platform.
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automated Laser Scanning System for reverse engineering and inspection
International Journal of Machine Tools & Manufacture, 2002Co-Authors: Seokbae Son, Hyunpung Park, Kwan H LeeAbstract:Recently, Laser scanners have been used more often for inspection and reverse engineering in industry, such as for motors, electronic products, dies and molds. However, due to the lack of efficient Scanning software, Laser scanners are usually manually operated. Therefore, the tasks that involve inspection and reverse engineering processes are very expensive. In this research, we propose an automated measuring System for parts having a freeform surface. In order to automate a measuring process, appropriate hardware System as well as software modules are required. The hardware System consists of a Laser Scanning device and setup fixtures that can provide proper location and orientation for the part to be measured. The software modules generate optimal scan plans so that the Scanning operation can be performed accordingly. In the scan planning step, various Scanning parameters are considered in the generation of optimal scan paths, such as the view angle, depth of field, the length of the stripe, and occlusion. In the Scanning step, the generated scan plans are downloaded to the industrial Laser scanner and the point data are captured automatically. The measured point data sets are registered automatically and the quality of point data is evaluated by checking the difference between the CAD model and the measured data. To demonstrate an automated measuring System, a motorized rotary table with two degrees of freedom and a CNC-type Laser scanner with four degrees of freedom are used.
Jon Avery - One of the best experts on this subject based on the ideXlab platform.
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Compact Multipurpose Mobile Laser Scanning System — Initial Tests and Results
Remote Sensing, 2013Co-Authors: Craig Glennie, Benjamin A. Brooks, Todd Ericksen, Darren Hauser, Kenneth W. Hudnut, James H. Foster, Jon AveryAbstract:We describe a prototype compact mobile Laser Scanning System that may be operated from a backpack or unmanned aerial vehicle. The System is small, self-contained, relatively inexpensive, and easy to deploy. A description of System components is presented, along with the initial calibration of the multi-sensor platform. The first field tests of the System, both in backpack mode and mounted on a helium balloon for real-world applications are presented. For both field tests, the acquired kinematic LiDAR data are compared with highly accurate static terrestrial Laser Scanning point clouds. These initial results show that the vertical accuracy of the point cloud for the prototype System is approximately 4 cm (1σ) in balloon mode, and 3 cm (1σ) in backpack mode while horizontal accuracy was approximately 17 cm (1σ) for the balloon tests. Results from selected study areas on the Sacramento River Delta and San Andreas Fault in California demonstrate System performance, deployment agility and flexibility, and potential for operational production of high density and highly accurate point cloud data. Cost and production rate trade-offs place this System in the niche between existing airborne and tripod mounted LiDAR Systems.
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compact multipurpose mobile Laser Scanning System initial tests and results
Remote Sensing, 2013Co-Authors: Craig Glennie, Benjamin A. Brooks, Todd Ericksen, Darren Hauser, Kenneth W. Hudnut, James H. Foster, Jon AveryAbstract:We describe a prototype compact mobile Laser Scanning System that may be operated from a backpack or unmanned aerial vehicle. The System is small, self-contained, relatively inexpensive, and easy to deploy. A description of System components is presented, along with the initial calibration of the multi-sensor platform. The first field tests of the System, both in backpack mode and mounted on a helium balloon for real-world applications are presented. For both field tests, the acquired kinematic LiDAR data are compared with highly accurate static terrestrial Laser Scanning point clouds. These initial results show that the vertical accuracy of the point cloud for the prototype System is approximately 4 cm (1σ) in balloon mode, and 3 cm (1σ) in backpack mode while horizontal accuracy was approximately 17 cm (1σ) for the balloon tests. Results from selected study areas on the Sacramento River Delta and San Andreas Fault in California demonstrate System performance, deployment agility and flexibility, and potential for operational production of high density and highly accurate point cloud data. Cost and production rate trade-offs place this System in the niche between existing airborne and tripod mounted LiDAR Systems.
Hyunpung Park - One of the best experts on this subject based on the ideXlab platform.
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automated Laser Scanning System for reverse engineering and inspection
International Journal of Machine Tools & Manufacture, 2002Co-Authors: Seokbae Son, Hyunpung Park, Kwan H LeeAbstract:Recently, Laser scanners have been used more often for inspection and reverse engineering in industry, such as for motors, electronic products, dies and molds. However, due to the lack of efficient Scanning software, Laser scanners are usually manually operated. Therefore, the tasks that involve inspection and reverse engineering processes are very expensive. In this research, we propose an automated measuring System for parts having a freeform surface. In order to automate a measuring process, appropriate hardware System as well as software modules are required. The hardware System consists of a Laser Scanning device and setup fixtures that can provide proper location and orientation for the part to be measured. The software modules generate optimal scan plans so that the Scanning operation can be performed accordingly. In the scan planning step, various Scanning parameters are considered in the generation of optimal scan paths, such as the view angle, depth of field, the length of the stripe, and occlusion. In the Scanning step, the generated scan plans are downloaded to the industrial Laser scanner and the point data are captured automatically. The measured point data sets are registered automatically and the quality of point data is evaluated by checking the difference between the CAD model and the measured data. To demonstrate an automated measuring System, a motorized rotary table with two degrees of freedom and a CNC-type Laser scanner with four degrees of freedom are used.
Bo Yang - One of the best experts on this subject based on the ideXlab platform.
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Low Cost Multi-Sensor Robot Laser Scanning System and its Accuracy Investigations for Indoor Mapping Application
ISPRS - International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences, 2017Co-Authors: Chi Chen, Xuming Zou, Mao Tian, Y. Song, Wenxia Dai, Bo YangAbstract:Abstract. In order to solve the automation of 3D indoor mapping task, a low cost multi-sensor robot Laser Scanning System is proposed in this paper. The multiple-sensor robot Laser Scanning System includes a panorama camera, a Laser scanner, and an inertial measurement unit and etc., which are calibrated and synchronized together to achieve simultaneously collection of 3D indoor data. Experiments are undertaken in a typical indoor scene and the data generated by the proposed System are compared with ground truth data collected by a TLS scanner showing an accuracy of 99.2% below 0.25 meter, which explains the applicability and precision of the System in indoor mapping applications.
