High-speed Imperceptible Structured Light Depth Mapping

Avery Cole, Sheikh Ziauddin, Sheikh Ziauddin, Michael Greenspan, Michael Greenspan, Michael Greenspan

2020

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.

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 (VISIGRAPP 2020) - Volume 4: VISAPP; ISBN 978-989-758-402-2, SciTePress, 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 (VISIGRAPP 2020) - 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 (VISIGRAPP 2020) - 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
PB - SciTePress