17 July 2015 Evaluation of the correctness of a 3D recording device for mandibular functional movement in laboratory
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Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 952415 (2015); doi: 10.1117/12.2189276
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore
Abstract
Objectives: To quantitatively evaluate the correctness of a computer binocular vision mandibular 3D trajectory recording device.

Methods: A specialized target shooting paper was neatly pasted on a high-precision three-axis electronic translation stage. A linear one-way movement was set at a speed of 1 mm/s along the X, Y, and Z directions for a distance of 10 mm each. The coordinates of 3 pre-set target points were recorded at the start and end by a computer binocular vision system with a frequency of 10 FPS and stored in TXT format. The TXT files were imported to Imageware 13.0, and the straight-line lengths between the start and end were measured. The mean difference between each length and 10 mm were calculated to evaluate the correctness of the distance measurement. The linear movement and recording procedure was repeated 3 times, but the speed was changed to 5 mm/s to simulate the human mandibular movement speed. The trajectories of the 3 target points were fitted and the vertical dimensions from each track point to the fitted lines were measured. The mean difference was calculated between the vertical dimensions and 0 mm to evaluate the correctness of recording trajectories using this device.

Results: The correctness of distance measurements of the points 1, 2, and 3 were 0.06 mm, 0.16 mm, and 0.08 mm, respectively. The correctness of the trajectories of the points 1, 2, and 3 were 0.11 mm, 0.11 mm, and 0.10 mm, respectively.

Conclusion: Using this computer binocular vision device, the correctness of the recorded linear trajectories in the range of 10 mm was better than 0.20 mm.
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Tian Zhao, Huaxin Sui, Huifang Yang, Yong Wang, Yuchun Sun, "Evaluation of the correctness of a 3D recording device for mandibular functional movement in laboratory", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 952415 (17 July 2015); doi: 10.1117/12.2189276; http://dx.doi.org/10.1117/12.2189276
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KEYWORDS
Distance measurement

3D vision

Computer vision technology

Machine vision

3D acquisition

3D metrology

Computing systems

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