Subpixel Unsynchronized Unstructured Light

Chaima El Asmi, Sébastien Roy

2019

Abstract

This paper proposes to add subpixel accuracy to the unsynchronized unstructured light method while achieving high-speed dense reconstruction without any camera-projector synchronization. This allows scanning faces which is notoriously difficult due to involuntary movements on the part of the model and the reduced possibilities of 3D scanner approaches such as laser scanners because of speed or eye protection. The unsynchronized unstructured light method achieves this with low-cost hardware and at a high capture and projection frame rate (up to 60 fps). The proposed approach proceeds by complementing a discrete binary coded match with a continuous interpolated code which is matched to subpixel precision. This subpixel matching can even correct for erroneous camera-projector correspondences. The obtained results show that highly accurate unfiltered 3D models can be reconstructed even in difficult capture conditions such as indirect illumination, scene discontinuities, or low hardware quality.

Paper Citation

in Harvard Style

El Asmi C. and Roy S. (2019). Subpixel Unsynchronized Unstructured Light. In Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2019) - Volume 5: VISAPP; ISBN 978-989-758-354-4, SciTePress, pages 865-875. DOI: 10.5220/0007404608650875

in Bibtex Style

@conference{visapp19,
author={Chaima El Asmi and Sébastien Roy},
title={Subpixel Unsynchronized Unstructured Light},
booktitle={Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2019) - Volume 5: VISAPP},
year={2019},
pages={865-875},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007404608650875},
isbn={978-989-758-354-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2019) - Volume 5: VISAPP
TI - Subpixel Unsynchronized Unstructured Light
SN - 978-989-758-354-4
AU - El Asmi C.
AU - Roy S.
PY - 2019
SP - 865
EP - 875
DO - 10.5220/0007404608650875
PB - SciTePress