Results 21 to 30 of about 2,632,024 (290)
Influence of Geometric Error of Rollers on Rotational Accuracy of Cylindrical Roller Bearings
Xibei Gongye Daxue Xuebao, 2019 As the rotation of roller bearings is carried out under geometrical constraint of the inner ring, outer ring and multiple rollers, the motion error of the bearing should also be resulted from geometric errors of bearing parts. Therefore, it is crucial to
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High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems
Sensors, 2021 To realize high-precision and high-frequency unattended site calibration and detection of satellites, automatic direction adjustment must be implemented in mirror arrays.
Ruijin Li +6 more
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Overviews of Optimization Techniques for Geometric Estimation [PDF]
, 2013 We summarize techniques for optimal geometric estimation from noisy observations for computer vision applications. We first discuss the interpretation of optimality and point out that geometric estimation is different from the standard statistical ...
Kanatani, Kenichi
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Influence of each of the geometric errors on the total displacement error of the machine [PDF]
IEEE EUROCON 2017 -17th International Conference on Smart Technologies, 2017 An algorithm for volumetric calibration is developed and verified practically by measuring of all geometric errors after numerical compensation. In this paper, analysis of the contribution of each of 9 translational and 9 rotational position dependent errors and each of 3 position independent errors in total displacement error vector is presented ...
Igor Dimovski +4 more
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, 2022 (a) reconstructed transaxial-slice CT image of the geometric-accuracy plate of the CT quality assurance phantom with four beads located at the periphery and 34.98 ±0.06 mm apart and one central bead at a distance of 24.74 ±0.01 mm from the other four. (b)
Santiago Fabian Cobos (13933140) +3 more
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Calibration of Nanopositioning Stages
Micromachines, 2015 Accuracy is one of the most important criteria for the performance evaluation of micro- and nanorobots or systems. Nanopositioning stages are used to achieve the high positioning resolution and accuracy for a wide and growing scope of applications ...
Ning Tan +2 more
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Geometric feature distributions for shape representation and recognition. [PDF]
, 1994 One of the fundamental problems in computer vision is the identification of objects from their shape. The research reported in this thesis is directed toward the development of a scheme for representing the shape of an object which allows it to be ...
Evans, Alun C
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Journal of Manufacturing and Materials Processing, 2018 An S-shaped machining test is proposed for the ISO 10791-7 standard to verify the performance of five-axis machining centers. However, investigation of the factor that has the most influence on the geometrical accuracy of finished S-shaped workpieces has
Ryuta Sato +2 more
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Geometric Interpretations of the Normalized Epipolar Error
CoRR, 2020 In this work, we provide geometric interpretations of the normalized epipolar error. Most notably, we show that it is directly related to the following quantities: (1) the shortest distance between the two backprojected rays, (2) the dihedral angle between the two bounding epipolar planes, and (3) the $L_1$-optimal angular reprojection error.
Seong Hun Lee, Javier Civera 0001
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