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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 13641–13647

Application of global phase filtering method in multi frequency measurement

Limei Song, Yulan Chang, Zongyan Li, Pengqiang Wang, Guangxin Xing, and Jiangtao Xi  »View Author Affiliations

Optics Express, Vol. 22, Issue 11, pp. 13641-13647 (2014)

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In reverse engineering, reconstruction of 3D point cloud data is the key step to acquire the final profile of the object. However, the quality of 3D reconstruction is influenced by noise in the three-dimensional measurement. This paper aims to tackle the issue of removing the noisy data from the complex point cloud data. The 3D-GPF (Three Dimensional Global Phase Filtering) global phase filtering method is proposed based on the study of phase filtering method, consisting of the steps below. Firstly, the six-step phase shift profilometry is used to obtain the local phase information, and encoding the obtained phase information. Through the global phase unwrapping method, the global phase can be acquired. Secondly, 3D-GPF method is used for the obtained global phase. Finally, the effect of 3D reconstruction is analyzed after the global phase filtering. Experimental results indicate that the noisy points of three-dimensional graphics is reduced 98.02%, the speed of 3D reconstruction is raised 12%.The effect of the proposed global phase filtering method is better than DCT and GSM methods. It is high precision and fast speed, and can be widely used in other 3D reconstruction application.

© 2014 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(100.2980) Image processing : Image enhancement
(100.6890) Image processing : Three-dimensional image processing
(110.0110) Imaging systems : Imaging systems
(110.6880) Imaging systems : Three-dimensional image acquisition

ToC Category:
Image Processing

Original Manuscript: April 17, 2014
Revised Manuscript: May 23, 2014
Manuscript Accepted: May 23, 2014
Published: May 29, 2014

Limei Song, Yulan Chang, Zongyan Li, Pengqiang Wang, Guangxin Xing, and Jiangtao Xi, "Application of global phase filtering method in multi frequency measurement," Opt. Express 22, 13641-13647 (2014)

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