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Robust and efficient decoding scheme for line structured light
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DOI：10.1016/j.optlaseng.2015.06.008.png)
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Abstract
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Accurately and robustly extracting the peak positions of line stripes has been the focus of 3-D reconstruction by using line structured light. However, typical peak detection algorithms need to employ neighborhood techniques, and, thus, their accuracies are susceptible to line stripe ambiguities. In this paper, we present a pixel-wise decoding scheme for line-scanning patterns. The proposed method can achieve: (1) robustly decoding without neighboring operations and (2) efficient implementation without searching maximum intensities or computing derivatives. Compared with typical spatial peak-detection algorithms, our experimental results demonstrate that, with holding the same scanning accuracy, the proposed method achieves much higher computational efficiency and more robustly decoding. (C) 2015 Elsevier Ltd. All rights reserved.
Keywords:
3-D surface measurement
Line structured light
Peak detection
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