Multi-Frequency Heterodyne Phase Shift Technology in 3-D Measurement

Abstract:

According to the characteristics of the fringe patterns noise, came up with a small area spin filtering noise cancellation algorithm based on parallel marker technology. It means that preprocess the fringe pattern before spin filtering, then did a median filter and calculated the stripe direction, finally used the extract the fringe direction to spin filtering of the original image. The algorithm can marked several targets in scanning process at the same time. So it has a high efficiency. The algorithm can be used in the multi-frequency heterodyne phase shift technology .And we can use the technology to complete the measurement of complex surfaces. Experimental results show that the method has a distinct advantage in measurement accuracy, measurement speed, and noise immunity.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 1582-1585
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.1582
• Online since: September 2013
• Authors: Le Wang, Lei Song, Li Jun Zhong, Peng Xin, Shuai Li, Huan Qi
• Keywords: 3-D Reconstruction, Multi-Frequency Heterodyne Principle, Noise Cancellation, Phase Measurement

References

[1] Francois Blais. Review of 20 years of range sensor development. (Journal of Electronic Imaging, 2004).

[2] Song Zhang and Shing-Tung Yau. High-resolution, real-time 3D absolute coordinate measurement based on a phase-shifting method. (Optics Express, 2006).

DOI: 10.1364/oe.14.002644

[3] Huiling Yang. Projection grid lines in the 3-Dshape measurement system key technology research and Application. Changchun University of Science and Technology. 2002 . In Chinese.

[4] H Z Hu. Polarization heterodyne interferometry using a simple rotating analyzer. Theory and error analysis. (Appl Opt, 1983).

DOI: 10.1364/ao.22.002052

[5] Xiaojun Ni. Research and implementation of simplify point cloud data and triangular mesh surface reconstruction technique. Suzhou University. 2010. In Chinese.