Investigations of the Geometrical Accuracy of Handheld 3D Scanning Systems

2016 ◽  
Vol 2016 (5) ◽  
pp. 271-283 ◽  
Author(s):  
ThomasP. Kersten ◽  
Heinz-J�rgen Przybilla ◽  
Maren Lindstaedt
Keyword(s):  
3D Scanning ◽  
Geometrical Accuracy ◽  
Scanning Systems

Evaluation of New In-Ditch Methods for Measurement and Assessment of External Corrosion

2014 ◽  
Author(s):  
Pablo Cazenave ◽  
Katina Tiñacos ◽  
Ming Gao ◽  
Richard Kania ◽  
Rick Wang
Keyword(s):  
New Technologies ◽  
3D Scanning ◽  
Primary Objective ◽  
Scanning System ◽  
Calculation Methods ◽  
Integrity Assessment ◽  
External Corrosion ◽  
Non Destructive ◽  
Scanning Systems ◽  
Inspection Performance

New technologies for in-ditch non-destructive evaluation were lately developed and are becoming of mainstream use in the evaluation of external corrosion features for both In-Line-Inspection performance evaluation and pipeline integrity assessment. However, doubt was cast about the reliability and repeatability of these new technologies (hardware and processing software) when compared with those used in the traditional external-corrosion in-ditch measurement and the reliability of the pipeline integrity assessment calculations (PBurst) embedded in their software when compared with industry-wide accepted calculation methods. Therefore, the primary objective of this study is to evaluate the variation and repeatability of the measurements produced by these new technologies in corrosion feature profiling and associated PBurst calculations. Two new 3D scanning systems were used for the evaluation of two pipe samples removed from service which contain complex external corrosion features in laboratory. The reliability of the 3D scanning system in measuring corrosion profiles was evaluated against traditional profile gage data. In addition, the associated burst pressures reported by the systems were compared with results obtained using industry-widely used calculation methods. Also, consistencies, errors and gaps in results were identified. In this paper, the approach used for this study is described first, the evaluation results are then presented and finally the findings and their implications are discussed.

scholarly journals 3D scanning systems for monitoring the size of mesh implants

2018 ◽  
Vol 412 ◽  
pp. 012090
Author(s):  
A A Kaleev ◽  
L N Kashapov ◽  
N F Kashapov ◽  
R N Kashapov
Keyword(s):  
3D Scanning ◽  
Scanning Systems

Efficient rate-distortion compression of dynamic point cloud for grid-pattern-based 3D scanning systems

3D Research ◽  
2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Ismael Daribo ◽  
Ryo Furukawa ◽  
Ryusuke Sagawa ◽  
Hiroshi Kawasaki ◽  
Shinsaku Hiura ◽  
...  
Keyword(s):  
Point Cloud ◽  
Rate Distortion ◽  
3D Scanning ◽  
Grid Pattern ◽  
Scanning Systems

Features 3D scanning systems for rapid prototyping

1997 ◽  
Vol 17 (3) ◽  
pp. 206-210 ◽  
Author(s):  
Jim Clark
Keyword(s):  
Rapid Prototyping ◽  
3D Scanning ◽  
Scanning Systems

scholarly journals Investigation in optimisation of accuracy with non-contact systems by influencing variable processes

2019 ◽  
Author(s):  
Ranveer S. Matharu ◽  
Wayne Sadler ◽  
Bekim V. Gashi ◽  
Trevor Toman
Keyword(s):  
3D Scanning ◽  
Ease Of Use ◽  
Shop Floor ◽  
Accurate Information ◽  
High Quality ◽  
Essential Tool ◽  
Scanning Systems

The use of 3D scanning systems is becoming increasingly popular and an essential tool for manufacturers for inspection and measurement. With such systems being utilised on the manufacturing shop floor due to their portability and ease of use, it is no doubt that such systems are designed to address a variety of users whom, with minimal training can operate the equipment. Due to continuing demands of high-quality products there is the need for manufacturers of 3D scanning systems to develop technologies that deliver fast and accurate information. However, one of the key challenges lies not in the training of people to use the equipment, but to develop engineers who can produce traceable, accurate and precise results with a declared statement of confidence quantifying the quality of the measurement. This statement of the quality of the output results relies on employing a set of workflow actions that involve planning, capture, processing and analysis, and finally output. This paper sets out to show how the results from a set of workflow actions from different categories of 3D scanning devices affects the quality of output.

scholarly journals Calibration of Turntable Based 3D Scanning Systems

2019 ◽  
Vol E102.D (9) ◽  
pp. 1833-1841
Author(s):  
Duhu MAN ◽  
Mark W. JONES ◽  
Danrong LI ◽  
Honglong ZHANG ◽  
Zhan SONG
Keyword(s):  
3D Scanning ◽  
Scanning Systems

Image binarization method for markers tracking in extreme light conditions

2021 ◽  
pp. 1-15
Author(s):  
Milan Ćurković ◽  
Andrijana Ćurković ◽  
Damir Vučina
Keyword(s):  
Image Processing ◽  
3D Scanning ◽  
Scanning System ◽  
Image Size ◽  
Image Binarization ◽  
Basic Part ◽  
Binarization Algorithm ◽  
Binarization Method ◽  
Scanning Systems ◽  
Time Image

Image binarization is one of the fundamental methods in image processing and it is mainly used as a preprocessing for other methods in image processing. We present an image binarization method with the primary purpose to find markers such as those used in mobile 3D scanning systems. Handling a mobile 3D scanning system often includes bad conditions such as light reflection and non-uniform illumination. As the basic part of the scanning process, the proposed binarization method successfully overcomes the above problems and does it successfully. Due to the trend of increasing image size and real-time image processing we were able to achieve the required small algorithmic complexity. The paper outlines a comparison with several other methods with a focus on objects with markers including the calibration system plane of the 3D scanning system. Although it is obvious that no binarization algorithm is best for all types of images, we also give the results of the proposed method applied to historical documents.

scholarly journals Using the 3D Ear Scanner: Seven Practical Tips to Remember if you are an Audiologist and Manage Patients with Otoscan

2020 ◽  
Vol I (1) ◽  
pp. 01-03
Author(s):  
Barbero Rodriguez A
Keyword(s):  
Daily Practice ◽  
3D Scanning ◽  
Digital Design ◽  
New Technique ◽  
Daily Work ◽  
3D Scanners ◽  
A New Technique ◽  
Short Time ◽  
Light Beams ◽  
Scanning Systems

Otoscanner 3D is a new technique used to reproduce the shape and measurements of patients’ ears in Audiology and Anaplastology, using laser light beams and 3D modeling. This new technique is increasingly used by audiologists because it has high precision and the great advantage of making a digital design of the molds personalized with the patient’s anatomy. In a very short time, it has become equipment for daily use in Audiology Clinics and Anaplastology. Our audiologists periodically review the protocols for using the 3D scanners and provide useful advice and corrections for their colleagues in their daily work with the 3D scanning systems. To know the complete evolution of our work, see the two articles previously published in industry magazines and in professional forums and which are referenced in the article.1-3 Manufacturers edit a manual with the use of the Otoscanner that the audiologist should know, but normally the advice about the difficulties we have during daily practice with 3D scanning and when working with difficult patients during the measurement is not edited. To serve as a guide, we publish here some of those aspects that include correcting the patient’s position to perform the measurement; advantages of using in combination with the Video-Otoscope; advice if you also take measures for Anaplastology; precautions to consider such as restrictions on use below adulthood; improvements in your hardware; avoid saturation of the Otocloud and Otoscan-COVID.

scholarly journals A Tool-Free Calibration Method for Turntable-Based 3D Scanning Systems

2016 ◽  
Vol 36 (1) ◽  
pp. 52-61 ◽  
Author(s):  
Xufang Pang ◽  
Rynson W.H. Lau ◽  
Zhan Song ◽  
Yangyan Li ◽  
Shengfeng He
Keyword(s):  
Calibration Method ◽  
3D Scanning ◽  
Scanning Systems
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