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Proceedings Paper

Calibration algorithm for center deviation of rotary tomography imaging
Author(s): Baosheng Li; Xiang Yue; Yicheng Wang; Shanlin Liu
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Paper Abstract

The rotation center of the optical tomography is not strict in the actual device, resulting in the deviation of the rotation center, so that the final projection image reconstruction effect is not ideal. The method proposed in this paper introduces the sampling and fitting circle method on the basis of the original projection sinusoidal center calibration method, makes a preliminary calibration of the rotation center and makes it more accurate with the gradient operator after the center of the projection sinusoid is positioned. A further central calibration of the object imaging in the optical path transmission is made at the center of the detector target surface according to the gradient. Experiments show that the center position of this method is more accurate than the original sinusoidal calibration and has a reliable basis. Using the gradient operator to judge the effective image clarity, the final reconstructed image also has high resolution and anti-jamming. The feature recognition rate of the image has greatly improved. The experimental results have made a great contribution to obtaining clear and effective information.

Paper Details

Date Published: 24 October 2017
PDF: 6 pages
Proc. SPIE 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation, 1046303 (24 October 2017); doi: 10.1117/12.2282268
Show Author Affiliations
Baosheng Li, Hefei Univ. of Technology (China)
Xiang Yue, Hefei Univ. of Technology (China)
Yicheng Wang, Hefei Univ. of Technology (China)
Shanlin Liu, Hefei Univ. of Technology (China)


Published in SPIE Proceedings Vol. 10463:
AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Carl Nardell; Suijian Xue; Huaidong Yang, Editor(s)

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