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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1109/TPAMI.2022.3202511
|2 doi
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|a pubmed24n1295.xml
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|a (NLM)36037460
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|a DE-627
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|a eng
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|a Ghanekar, Bhargav
|e verfasserin
|4 aut
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| 245 |
1 |
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|a PS 2 F
|b Polarized Spiral Point Spread Function for Single-Shot 3D Sensing
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 16.02.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a We propose a compact snapshot monocular depth estimation technique that relies on an engineered point spread function (PSF). Traditional approaches used in microscopic super-resolution imaging such as the Double-Helix PSF (DHPSF) are ill-suited for scenes that are more complex than a sparse set of point light sources. We show, using the Cramér-Rao lower bound, that separating the two lobes of the DHPSF and thereby capturing two separate images leads to a dramatic increase in depth accuracy. A special property of the phase mask used for generating the DHPSF is that a separation of the phase mask into two halves leads to a spatial separation of the two lobes. We leverage this property to build a compact polarization-based optical setup, where we place two orthogonal linear polarizers on each half of the DHPSF phase mask and then capture the resulting image with a polarization-sensitive camera. Results from simulations and a lab prototype demonstrate that our technique achieves up to 50% lower depth error compared to state-of-the-art designs including the DHPSF and the Tetrapod PSF, with little to no loss in spatial resolution
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|a Journal Article
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|a Saragadam, Vishwanath
|e verfasserin
|4 aut
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|a Mehra, Dushyant
|e verfasserin
|4 aut
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|a Gustavsson, Anna-Karin
|e verfasserin
|4 aut
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|a Sankaranarayanan, Aswin C
|e verfasserin
|4 aut
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|a Veeraraghavan, Ashok
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g PP(2022) vom: 29. Aug.
|w (DE-627)NLM098212257
|x 1939-3539
|7 nnns
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|g volume:PP
|g year:2022
|g day:29
|g month:08
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|u http://dx.doi.org/10.1109/TPAMI.2022.3202511
|3 Volltext
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