Decoding line structured light patterns by using Fourier analysis

Yunfei Long; Shuaijun Wang; Wei Wu; Xiaomin Yang; Gwanggil Jeon; Kai Liu

doi:10.1117/1.OE.54.7.073109

23 July 2015 Decoding line structured light patterns by using Fourier analysis

Yunfei Long, Shuaijun Wang, Wei Wu, Xiaomin Yang, Gwanggil Jeon, Kai Liu

Author Affiliations +

Optical Engineering, Vol. 54, Issue 7, 073109 (July 2015). https://doi.org/10.1117/1.OE.54.7.073109

Abstract

Line structured light techniques, especially laser scanning, are preferred for commercialized three-dimensional (3-D) shape acquisition. Typically, a captured line stripe is to be detected spatially within a single image, and the detection may fail if there are ambiguities in the image. We present a decoding strategy for line structured light patterns. Over all recorded line-patterned images, by means of Fourier analysis along the time axis for each pixel, a phase map is computed and employed for 3-D reconstruction. The phase error is theoretically analyzed. Experimental results demonstrate that, compared with typical approaches based on spatial stripe peak detection, the proposed method achieves comparable accuracy and, most importantly, successfully handles the issue of ambiguities.

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Yunfei Long, Shuaijun Wang, Wei Wu, Xiaomin Yang, Gwanggil Jeon, and Kai Liu "Decoding line structured light patterns by using Fourier analysis," Optical Engineering 54(7), 073109 (23 July 2015). https://doi.org/10.1117/1.OE.54.7.073109

Published: 23 July 2015

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