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Temporally-Consistent Phase Unwrapping for a Stereo-Assisted Structured Light System

Phase shifted sinusoidal projection patterns are extensively used in structured light systems due to their low decoding complexity and projection of only three frames per reconstruction. However, they require correct unwrapping of phase images to reconstruct depth accurately. For time varying scenes...

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Main Authors: Garcia, R. R., Zakhor, A.
Format: Conference Proceeding
Language:English
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description Phase shifted sinusoidal projection patterns are extensively used in structured light systems due to their low decoding complexity and projection of only three frames per reconstruction. However, they require correct unwrapping of phase images to reconstruct depth accurately. For time varying scenes, it is important for the phase unwrapped results to be temporally coherent. In this paper, we propose a spatio-temporal phase unwrapping algorithm for a structured light system made of a projector and a pair of stereo cameras. Unlike existing frame by frame spatial domain approaches, our proposed algorithm results in a temporally consistent three-dimensional unwrapped phase volume for time varying scenes. We experimentally show the effectiveness of our approach in recovering absolute phase for scenes with multiple disjoint objects, significant motion, and large depth discontinuities.
doi_str_mv 10.1109/3DIMPVT.2011.56
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R.</creatorcontrib><creatorcontrib>Zakhor, A.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Xplore</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Garcia, R. 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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Cameras
depth recovery
Image edge detection
Indexes
Lead
phase unwrawpping
Pixel
Probability distribution
stereo
structured light
Three dimensional displays
title Temporally-Consistent Phase Unwrapping for a Stereo-Assisted Structured Light System
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