Field evaluation of a novel holographic single-image depth reconstruction sensor

A camera-based single-image sensor is presented, that is able to measure the distance of one or multiple object points (light emitters). The sensor consists of a camera, whose lens is upgraded with a diffractive optical element (DOE). It fulfils two tasks: adding a vortex point spread function (PSF)...

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Main Authors: Hartlieb Simon, Schober Christian, Haist Tobias, Reichelt Stephan
Format: Article
Language:English
Published: EDP Sciences 2023-01-01
Series:Journal of the European Optical Society-Rapid Publications
Subjects:
Online Access:https://jeos.edpsciences.org/articles/jeos/full_html/2023/01/jeos20230007/jeos20230007.html
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author Hartlieb Simon
Schober Christian
Haist Tobias
Reichelt Stephan
author_facet Hartlieb Simon
Schober Christian
Haist Tobias
Reichelt Stephan
author_sort Hartlieb Simon
collection DOAJ
description A camera-based single-image sensor is presented, that is able to measure the distance of one or multiple object points (light emitters). The sensor consists of a camera, whose lens is upgraded with a diffractive optical element (DOE). It fulfils two tasks: adding a vortex point spread function (PSF) and replication of the vortex PSFs to a predefined pattern of K spots. Both, shape and rotation of the vortex PSF is sensitive to defocus. The sensor concept is presented and its capabilities evaluated both on axis and off-axis. The achieved standard deviation of the error ranges between 8.5 μm (on-axis) and 3.5 μm (off-axis) within a measurement range of 20 mm. However, as soon as calibration and measurement position no longer match, the accuracy is limited. An analysis of the effects responsible for this are also part of the publication.
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spelling doaj.art-e34c63722f9e444782f99ea3d66d71222023-05-02T09:33:34ZengEDP SciencesJournal of the European Optical Society-Rapid Publications1990-25732023-01-011912010.1051/jeos/2023017jeos20230007Field evaluation of a novel holographic single-image depth reconstruction sensorHartlieb Simon0Schober Christian1Haist Tobias2Reichelt Stephan3Universität Stuttgart, Institut für Technische OptikUniversität Stuttgart, Institut für Technische OptikUniversität Stuttgart, Institut für Technische OptikUniversität Stuttgart, Institut für Technische OptikA camera-based single-image sensor is presented, that is able to measure the distance of one or multiple object points (light emitters). The sensor consists of a camera, whose lens is upgraded with a diffractive optical element (DOE). It fulfils two tasks: adding a vortex point spread function (PSF) and replication of the vortex PSFs to a predefined pattern of K spots. Both, shape and rotation of the vortex PSF is sensitive to defocus. The sensor concept is presented and its capabilities evaluated both on axis and off-axis. The achieved standard deviation of the error ranges between 8.5 μm (on-axis) and 3.5 μm (off-axis) within a measurement range of 20 mm. However, as soon as calibration and measurement position no longer match, the accuracy is limited. An analysis of the effects responsible for this are also part of the publication.https://jeos.edpsciences.org/articles/jeos/full_html/2023/01/jeos20230007/jeos20230007.htmldepth measurementpsf modificationdiffractive optical elementdigital image correlationmultipoint methodsingleshot 3d
spellingShingle Hartlieb Simon
Schober Christian
Haist Tobias
Reichelt Stephan
Field evaluation of a novel holographic single-image depth reconstruction sensor
Journal of the European Optical Society-Rapid Publications
depth measurement
psf modification
diffractive optical element
digital image correlation
multipoint method
singleshot 3d
title Field evaluation of a novel holographic single-image depth reconstruction sensor
title_full Field evaluation of a novel holographic single-image depth reconstruction sensor
title_fullStr Field evaluation of a novel holographic single-image depth reconstruction sensor
title_full_unstemmed Field evaluation of a novel holographic single-image depth reconstruction sensor
title_short Field evaluation of a novel holographic single-image depth reconstruction sensor
title_sort field evaluation of a novel holographic single image depth reconstruction sensor
topic depth measurement
psf modification
diffractive optical element
digital image correlation
multipoint method
singleshot 3d
url https://jeos.edpsciences.org/articles/jeos/full_html/2023/01/jeos20230007/jeos20230007.html
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