Results 331 to 340 of about 1,723,588 (348)
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On the accuracy of the single-shot two-dimensional angular dispersion measurement
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013This paper demonstrates a simple, very fast and single-shot 2D method that can be used for high precision characterization for the angular dispersion of broadband laser pulses. This method offers a quick online tool for the alignment of the stretcher-compressor system of chirped pulse amplification (CPA) lasers as well as for real time monitoring the ...
M. Gstalter +4 more
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A method for improving measurement accuracy of cylinders in dimensional CT metrology
Computer-Aided Design, 2015Measurement quality of industrial cone beam X-ray computed tomography (CT) is influenced by many types of artefacts, therefore, industrial-level accuracy is difficult to attain. In order to avoid the influences of these artefacts, this paper proposes a new method for measuring cylindrical surface that is a common geometric structure in mechanical parts.
Hiromasa Suzuki +6 more
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Oral surgery, oral medicine, oral pathology and oral radiology, 2021
Nirza Mukhia +4 more
semanticscholar +1 more source
Nirza Mukhia +4 more
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Optimized stereo matching in binocular three-dimensional measurement system using structured light.
Applied Optics, 2014In this paper, we develop an optimized stereo-matching method used in an active binocular three-dimensional measurement system. A traditional dense stereo-matching algorithm is time consuming due to a long search range and the high complexity of a ...
Kun-Yi Liu +5 more
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THE ACCURACY OF BEAM-AVERAGED INTERFEROMETRIC TEMPERATURE MEASUREMENTS IN A THREE-DIMENSIONAL FIELD
Experimental Heat Transfer, 2001A classical or holographic interferometer can be used to measure the average fluid temperature integrated in the direction of the test/object beam. However, such beam-averaged measurements are not exact for a three-dimensional temperature field, when a standard two-dimensional analysis technique is applied.
D. Naylor, A. D. MacHin
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Accuracy of dimensional and angular measurements from panoramic and lateral oblique radiographs.
Dentomaxillofacial Radiology, 1995Dimensional and angular measurements from radiographs can be used in clinical dentistry to determine the inclination of impacted teeth, the relative position of roots and restorative abutments, and for implant site assessment. This study was carried out to assess the in-vitro accuracy of such measurements obtained from three rotational panoramic ...
William C. Scarfe +4 more
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Ultrasound in Medicine & Biology, 2003
The purpose of this study was to document the accuracy of 3-D uterus volume and to compare it with 2-D measurements. Transvaginal ultrasound (US) examinations were performed in 48 consecutive patients before hysterectomy. The examinations were stored digitally on an internal disk drive for subsequent measurements in virtual organ computer-aided ...
Cemil Yaman +2 more
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The purpose of this study was to document the accuracy of 3-D uterus volume and to compare it with 2-D measurements. Transvaginal ultrasound (US) examinations were performed in 48 consecutive patients before hysterectomy. The examinations were stored digitally on an internal disk drive for subsequent measurements in virtual organ computer-aided ...
Cemil Yaman +2 more
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, 2017
Fringe projection profilometry has become a widely used method in 3D shape measurement and 3D data acquisition for the features of flexibility, noncontactness, and high accuracy.
Yan Hu +4 more
semanticscholar +1 more source
Fringe projection profilometry has become a widely used method in 3D shape measurement and 3D data acquisition for the features of flexibility, noncontactness, and high accuracy.
Yan Hu +4 more
semanticscholar +1 more source
Journal of the American Society of Echocardiography, 2006
The availability of automated online software may increase the feasibility of real-time 3-dimensional (3D) echocardiography (3DE) for left ventricular (LV) volume calculation in clinical practice. We sought to compare offline and online approaches with magnetic resonance imaging (MRI).Patients who presented to the clinical laboratory for evaluation of ...
Jenkins, Carly +3 more
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The availability of automated online software may increase the feasibility of real-time 3-dimensional (3D) echocardiography (3DE) for left ventricular (LV) volume calculation in clinical practice. We sought to compare offline and online approaches with magnetic resonance imaging (MRI).Patients who presented to the clinical laboratory for evaluation of ...
Jenkins, Carly +3 more
openaire +4 more sources
, 2013
. In the structured light three-dimensional measurement system, calibration is the key to the measurement accuracy; however, conventional calibration methods for the projector are either too complex or inaccurate.
Junhui Huang +3 more
semanticscholar +1 more source
. In the structured light three-dimensional measurement system, calibration is the key to the measurement accuracy; however, conventional calibration methods for the projector are either too complex or inaccurate.
Junhui Huang +3 more
semanticscholar +1 more source