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Stereo Matching and 3D Visualization for Gamma-Ray Cargo Inspection
2007
2007 IEEE Workshop on Applications of Computer Vision (WACV '07)
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A fast and automated stereo matching algorithm based on free-form deformable registration is developed to obtain 3D measurements of the objects under inspection. ...
For fast implementation, a multi-resolution approach is also applied. A user interface is designed for interactive 3D measurements and visualization of the objects in interests. ...
By doing this we will obtain much important information that was not available, e.g. the real parameters of the sensor setting, the ground truth data of the objects under inspection for fully evaluating ...
doi:10.1109/wacv.2007.57
dblp:conf/wacv/ZhuH07
fatcat:ymrxv73b2vcihjf323yk4b2hke
Robust generalized numerical inspection fixture for the metrology of compliant mechanical parts
2013
The International Journal of Advanced Manufacturing Technology
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The other advantage of presented method is the capacity to inspect the parts with large deformations. ...
These parts have different shapes in free state due to dimensional and geometric variations, gravity and residual strains. ...
Also, we appreciate the authors of different codes in NLDR and GMDS methods. ...
doi:10.1007/s00170-013-5344-8
fatcat:ttw5lizg4rcopm7dgpzmxndup4
Simple versatile shearing interferometer suitable for measurements on a microscopic scale
2009
Optics and lasers in engineering
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ABSTRACT Microelectromechanical systems (MEMS) behave differently from massive samples. Conventional testing and inspection techniques usually fail at the microscale. ...
The shearing device consists of two partially reflective glass plates. The reflection coefficients of the coatings are 0.3 and 0.7 respectively. ...
INTRODUCTION Developments in the field of semiconductors are leading to integrated circuits with three-dimensional features and moving parts, called micro-electromechanical systems (MEMS). ...
doi:10.1016/j.optlaseng.2008.05.003
fatcat:j3q5nfi4nfguvfqturvhxobf3m
Gamma/x-ray linear pushbroom stereo for 3D cargo inspection
2006
Non-Intrusive Inspection Technologies
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Then, a fast and automated stereo matching algorithm based on free-form deformable registration is developed to obtain 3D measurements of the objects under inspection. ...
For evaluating the contents of trucks, containers, cargo, and passenger vehicles by a non-intrusive gamma-ray or X-ray imaging system to determine the possible presence of contraband, three-dimensional ...
ACKNOWLEDGEMENTS This work is partially supported by the Air Force Research Laboratory (AFRL) under the RASER Program (Award No. FA8650-05-1-1853) and an Human Effectiveness Program (Award No. ...
doi:10.1117/12.664204
fatcat:fl2x76mud5atrdmhzzy7ynntea
Gamma/X-ray linear pushbroom stereo for 3D cargo inspection
2008
Machine Vision and Applications
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Then, a fast stereo matching algorithm is developed to obtain 3D measurements of the objects under inspection. This algorithm is fully automatic based on free-form deformable registration. ...
For evaluating the contents of trucks, containers, cargo, and passenger vehicles by a nonintrusive gamma-ray or X-ray imaging system to determine the possible presence of contraband, three-dimensional ...
the early stage of the work. ...
doi:10.1007/s00138-008-0173-8
fatcat:av4sbvzvtjahhhdwef2tz755wi
X-Ray Microcomputed Tomography in Additive Manufacturing: A Review of the Current Technology and Applications
2018
3D Printing and Additive Manufacturing
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X-ray microcomputed tomography (microCT) has become an established method of testing and analyzing additively manufactured parts in recent years, being especially useful and accurate for dimensional measurement ...
The review ends with perspectives on the most time-and cost-effective ways to make use of microCT for various AM applications from R&D up to industrial production, with suggestions for scan strategies ...
This can be done by simple viewing of CT slice images from a reasonably fast microCT scan, such as the example shown in Figure 1 , where powder remains inside the part and is visible in the CT image as ...
doi:10.1089/3dp.2018.0060
fatcat:ydzuxi37rfgl5pzyflqtqtldne
Laser-Ultrasonics for Industrial Applications
[chapter]
1988
Review of Progress in Quantitative Nondestructive Evaluation
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ACKNOWLEDGEMENT Work supported in part by CANMET, Energy, Mines and Resources, Canada. ...
from a C-scan view only. ...
The first pulse observed in Fig. 2 comprises a fast positive-going part, which corresponds to stray light from the generating/cleaning laser picked up by the detector, followed by the signal produced ...
doi:10.1007/978-1-4613-0979-6_88
fatcat:mbx4cyia5rahhks6r7bwmdqlem
Towards Retrieving Force Feedback in Robotic-Assisted Surgery: A Supervised Neuro-Recurrent-Vision Approach
2017
IEEE Transactions on Haptics
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The proposed solution starts with extracting the geometry of motion of the heart's surface by minimizing an energy functional to recover its 3D deformable structure. ...
Nonetheless, they still suffer from some limitations that affect their outcome. ...
The work has been developed in the frame of Project RTC-2015-3926-1, from MINECO and with Feder funds. ...
doi:10.1109/toh.2016.2640289
pmid:28113330
fatcat:hntibrfgwjezjnzb3izk6yjqne
Deformation Analysis of a Composite Bridge during Proof Loading Using Point Cloud Processing
2018
Sensors
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These techniques allow the creation of three-dimensional projections of the measured objects, and are relatively easy to use. ...
The results are characterized by a high degree of convergence and reveal the highly complex state of deformation more clearly than can be concluded from other measurement methods, proving that laser scanning ...
Both departments are a part of Faculty of Civil and Environmental Engineering, at the Gdansk University of Technology.
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s18124332
fatcat:oqxq7xzgozf4tbnwf5hrf7mcye
Comparative exploration of whole-body MR through locally rigid transforms
2013
International Journal of Computer Assisted Radiology and Surgery
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Our method is based on interactive derivation of locally rigid transforms from a pre-computed whole-body deformable registration. ...
of the STW project 10894 "Image analysis for whole-body MR imaging". facilitate the visual comparison of the two datasets: the "deformation sphere", the color fusion view, the magic lens, and a set of ...
The middle view shows a fusion of both images, to further ease the comparison (see "Color fusion view"). Each view shows a two-dimensional slice through the three-dimensional volume. ...
doi:10.1007/s11548-013-0820-z
pmid:23729332
pmcid:PMC3702961
fatcat:rirq3tgrovbyxj4teuwqyhwjhy
Head-mounted display for interactive inspection of painted free-form surfaces
2003
Helmet- and Head-Mounted Displays VIII: Technologies and Applications
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The system performance is demonstrated with the visual inspection of car doors. ...
Promising results show that our prototype allows a reliable yet cost-efficient inspection of painted surfaces matching the needs of automotive industry. ...
Michael Heizmann for valuable comments on a draft version of this paper. ...
doi:10.1117/12.484798
fatcat:ykwbjgcd4fajzf57kjrnzrtxui
Review and comparison of shearography and active thermography for nondestructive evaluation
2009
Materials science & engineering. R, Reports
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For the convenience of the materials community, this paper aims to present a comprehensive review of shearography and active thermography and their applications in nondestructive evaluation of materials ...
A comparison of the advantages and limitations of two techniques for nondestructive evaluation will also be presented. ...
Acknowledgement The work described in this paper has been supported by the grants CityU 1/01C and CityU 1196/02E of the Research Grants Council of Hong Kong, China. ...
doi:10.1016/j.mser.2008.11.001
fatcat:tiws4pprtvfenoxklms7janc6i
Four-dimensional in vivo X-ray microscopy with projection-guided gating
2015
Scientific Reports
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Acknowledgments The research leading to these results has received funding from the ...
Visual inspection of the tomographic data revealed streaking artefacts in all of the data obtained from single and multiple fast scans ( Supplementary Fig. 2a-d) . ...
We retrieved the spatial distribution of the refractive indices of the tissues from the recorded phase deviation of the partially coherent synchrotron X-rays in the sample 18 . ...
doi:10.1038/srep08727
pmid:25762080
pmcid:PMC4356984
fatcat:lcbxswlqq5bz7pldkwjshdt5ou
E-quality Control in Dental Metal Additive Manufacturing Inspection Using 3D Scanning and 3D Measurement
2020
Frontiers in Bioengineering and Biotechnology
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The main quality control challenge of these dental metal is the method of quality inspection. ...
Here, we propose a combination of 3D scanning and 3D measurement for 3D inspection of metal crowns. ...
This paper presents a 3D E-quality control system that integrates 3D scanning and 3D reconstruction to perform fast quality control inspections of complex dental metal parts. ...
doi:10.3389/fbioe.2020.01038
pmid:32984294
pmcid:PMC7481334
fatcat:bi643yq5dfd6jb6sf4jtjdfjoa
TERRESTRIAL LASER SCANNER AND FAST CHARACTERIZATION OF SUPERFICIAL LESIONS IN ARCHITECTURAL DIAGNOSIS
2019
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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The paper proposes a simple, non-invasive methodology for the assessment of masonry vaults from point clouds which makes it possible to obtain relevant data about the formal anomalies. ...
The methodology is tested in Tortosa's Gothic Cathedral's vaults, where the geometrical differences between vaults, a priori equal, are identified and related with the partially known construction phases ...
Table 1 . 1 Dimensional values of the standard primitives. ...
doi:10.5194/isprs-archives-xlii-2-w9-283-2019
fatcat:yqhcjwce6nglrcg5bh6tj5od6u
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