Design and analysis of a 3D laser scanner

Isa, Mohammed; Lazoğlu, İsmail

doi:10.1016/j.measurement.2017.07.028

Cited by 50 publications

(18 citation statements)

References 20 publications

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“…Techniques such as Structure-From-Motion (SFM) [ 22 ] started to stand out in this scenario, mainly due to the low cost and the quality of the data set that can be obtained. The application of this technique, associated with lasers [ 23 ], the projection of light patterns [ 24 , 25 ], and inertial positioning systems [ 26 ], allowed the development of high-resolution 3D scanners capable of generating dense point clouds that are quite reliably faithful to the original objects.…”

Section: Review Of Surface 3d Scanningmentioning

confidence: 99%

Comparative Analysis of Object Digitization Techniques Applied to the Characterization of Deformed Materials in Ballistic Tests

Balbino

Medeiros

Barbosa

2020

Sensors

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Several three-dimensional scanning methods have been developed and improved over the past 40 years. The peculiarities of each technique, associated with the computational advances of the period, allowed the increasing application and diffusion of the technology in several sectors, among them those related to metrology in ballistics and the testing of protective materials. The specific goal of such ballistic tests is to estimate the depth of indentation caused by projectiles. In particular, this study presents a comparative analysis between two three-dimensional optical scanning methods, taking into account the same object of interest. The comparative analysis was based on reference planes detected by Random Sample Consensus methodology in each cloud. By comparing the results of the different techniques, it was found for this case that three-dimensional reconstruction by stereo images estimated values closer to the real ones in comparison to those estimated by the structured light scanner, mainly due to the fact that, for three-dimensional reconstruction, the image acquisition was conducted statically.

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Section: Review Of Surface 3d Scanningmentioning

confidence: 99%

Comparative Analysis of Object Digitization Techniques Applied to the Characterization of Deformed Materials in Ballistic Tests

Balbino

Medeiros

Barbosa

2020

Sensors

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“…Laser scanners are also used for non-contact geometry measurements, giving similar results in terms of accuracy to the scanners based on structured light projection [18][19][20][21]. The main difference is the much shorter time for simultaneous scanning of a large area in the case of structured light scanners, while laser scanning is done additively by moving a point, a stripe, or a mesh over the scanned surface.…”

Section: Introduction 1state Of the Artmentioning

confidence: 99%

An Approach to an Intelligent Scanning of the Machine Tool Workspace

Marchewka¹,

Grudziński²

2021

Journal of Machine Engineering

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Modern 3D scanners can measure the geometry with high accuracy and within a short time. In turn, currently produced CNC machine tools allow for very accurate manufacturing; however, processes beyond the machining cycle remain time-consuming. This paper presents the idea and experimental tests of the scanning system in the CNC machine, which allows to speed up on-machine measurements, align clouds of 3D data points with an accuracy close to that of the machine itself, and finally set the workpiece coordinate system for machining. This modern approach is in line with Industry 4.0, combining the terms of data processing, machine vision, manufacturing automation, and human-machine interfaces. The future implementation of the proposed system as an interchangeable tool will allow performing autonomous measurements, inspection, and supervision of the workspace, without engaging the machine operator. The system calibration and experimental results using the industrial 3D scanner and CNC machine are described.

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“…Due to its relative high accuracy, thermographic imaging is a good sensing technology that can be utilized. Line laser scanners have become more popular as they provide faster output than regular CMM [13]. This type of sensor are made of a laser source and an optical sensor.…”

Section: Introductionmentioning

confidence: 99%

“…However, this type of sensor has its drawbacks. Systematic error occurs due to reflection of the surface, defects of the lenses, laser source, and the nonuniform environmental illumination, which causes an increment in uncertainty [13]. In order to reduce or correct the systematic error obtained from Laser scanning, a global model of error is being studied and developed [15].…”

Section: Introductionmentioning

confidence: 99%

Automated Scanning Techniques Using UR5

Lopez-Hawa

VanPelt

Emmanuel

et al. 2019

Journal of Robotics

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This study seeks to advance technologies pertaining to integration of low-cost collaborative robots to perform scanning operations where moderate accuracy is needed. Part inspection is an almost universal aspect of manufacturing which traditionally requires human observation. Advanced metrology techniques, such as scanning, allow greater inspection capabilities but still require a human operator and require significant capital investment. Using off-the-shelf line scanners in conjunction with small collaborative robots can completely automate the inspection process while minimizing cost. This project seeks to investigate the feasibility of utilizing a UR5 robot with a Keyence line scanner for scanning inspection in an industrial setting. Data from the line scanner is gathered, along with the position and orientation of the end-effector of the robot. The data are collected, combined, and analyzed in MATLAB to generate surface geometry. A user interface will allow viewing of the specific points gathered, expedite product inspection during manufacturing, and involve humans in higher skill-based decision-making tasks. A professional grade scan of the test part is used for comparison of experimentally gathered data. Feasibility is assessed on cost, effectiveness, ease of programming and operation, and development difficulty. In the preliminary result, it was found that the UR5 and line scanner provide a cheap and easily programmable and automated solution to line inspection. However, effectiveness and difficulty of development may pose challenges that require future research.

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Design and analysis of a 3D laser scanner

Cited by 50 publications

References 20 publications

Comparative Analysis of Object Digitization Techniques Applied to the Characterization of Deformed Materials in Ballistic Tests

Comparative Analysis of Object Digitization Techniques Applied to the Characterization of Deformed Materials in Ballistic Tests

An Approach to an Intelligent Scanning of the Machine Tool Workspace

Automated Scanning Techniques Using UR5

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