Phase Unwrapping for Large Discontinuous Surface Based on Color Fringe Projection

Wenguo Li (), Shaojun Duan and Zhihong Yin
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Wenguo Li: Kunming University of Science and Technology
Shaojun Duan: Kunming University
Zhihong Yin: Kunming University of Science and Technology

A chapter in 2012 International Conference on Information Technology and Management Science(ICITMS 2012) Proceedings, 2013, pp 563-574 from Springer

Abstract: Abstract A phase unwrapping method based on color fringe projection is presented. Color pattern is utilized to identify absolute fringe order and calculate wrapped phase distribution, simultaneously, which is time saving. The proposed method can overcome phase discontinuous problem. Three channel values in HSV space are employed to calculate pattern color intensity, the relative position between adjacent pixel’s hue channel value is used to decide absolute phase fringe order. The hue channel value is designed applying pseudorandom multi-valued sequence. The value channel intensity in HSV space is changed with the sinusoid. The detailed phase unwrapping approach is explained, the proposed algorithm can be applied to measurement for 3D object with large height steps and/or spatially isolated surfaces. The simulation and true object experiments validate the correctness of the proposed method.

Keywords: Phase unwrapping; Color fringe projection; Pseudorandom multi-valued sequence; Image segmentation; HSV color space (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-34910-2_66

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DOI: 10.1007/978-3-642-34910-2_66

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