High-speed Imperceptible Structured Light Depth Mapping

Avery Cole, Sheikh Ziauddin, Michael Greenspan

Abstract

A novel method is proposed to imperceptibly embed structured light patterns in projected content to extract a real time range image stream suitable for dynamic projection mapping applications. The method is based on a novel pattern injection approach that exploits the dithering sequence of modern Digital Micromirror Device projectors, so that patterns are injected at a frequency and intensity below the thresholds of human perception. A commercially available DLP projector is synchronized with camera capture at rates that allow a stream of grey code patterns to be imperceptibly projected and acquired to realize dense, imperceptible, real time, temporally encoded structured light. The method is deployed on a calibrated stereo procam system that has been rectified to facilitate fast correspondences from the extracted patterns, enabling depth triangulation. The bandwidth achieved imperceptibly is nearly 8 million points per second using a general purpose CPU which is comparable to, and exceeds some, hardware accelerated commercial structured light depth cameras.

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Paper Citation


in Harvard Style

Cole A., Ziauddin S. and Greenspan M. (2020). High-speed Imperceptible Structured Light Depth Mapping.In Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP, ISBN 978-989-758-402-2, pages 676-684. DOI: 10.5220/0008955906760684


in Bibtex Style

@conference{visapp20,
author={Avery Cole and Sheikh Ziauddin and Michael Greenspan},
title={High-speed Imperceptible Structured Light Depth Mapping},
booktitle={Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,},
year={2020},
pages={676-684},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008955906760684},
isbn={978-989-758-402-2},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 15th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,
TI - High-speed Imperceptible Structured Light Depth Mapping
SN - 978-989-758-402-2
AU - Cole A.
AU - Ziauddin S.
AU - Greenspan M.
PY - 2020
SP - 676
EP - 684
DO - 10.5220/0008955906760684