Estimation of the horizon in photographed outdoor scenes by human and machine.

We present three experiments on horizon estimation. In Experiment 1 we verify the human ability to estimate the horizon in static images from only visual input. Estimates are given without time constraints with emphasis on precision. The resulting estimates are used as baseline to evaluate horizon e...

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Autores principales:	Christian Herdtweck, Christian Wallraven
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/660f0b1bc8624b17be74a20223db53c2
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id	oai:doaj.org-article:660f0b1bc8624b17be74a20223db53c2
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spelling	oai:doaj.org-article:660f0b1bc8624b17be74a20223db53c22021-11-18T08:42:18ZEstimation of the horizon in photographed outdoor scenes by human and machine.1932-620310.1371/journal.pone.0081462https://doaj.org/article/660f0b1bc8624b17be74a20223db53c22013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24349073/?tool=EBIhttps://doaj.org/toc/1932-6203We present three experiments on horizon estimation. In Experiment 1 we verify the human ability to estimate the horizon in static images from only visual input. Estimates are given without time constraints with emphasis on precision. The resulting estimates are used as baseline to evaluate horizon estimates from early visual processes. Stimuli are presented for only 153 ms and then masked to purge visual short-term memory and enforcing estimates to rely on early processes, only. The high agreement between estimates and the lack of a training effect shows that enough information about viewpoint is extracted in the first few hundred milliseconds to make accurate horizon estimation possible. In Experiment 3 we investigate several strategies to estimate the horizon in the computer and compare human with machine "behavior" for different image manipulations and image scene types.Christian HerdtweckChristian WallravenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e81462 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Christian Herdtweck Christian Wallraven Estimation of the horizon in photographed outdoor scenes by human and machine.
description	We present three experiments on horizon estimation. In Experiment 1 we verify the human ability to estimate the horizon in static images from only visual input. Estimates are given without time constraints with emphasis on precision. The resulting estimates are used as baseline to evaluate horizon estimates from early visual processes. Stimuli are presented for only 153 ms and then masked to purge visual short-term memory and enforcing estimates to rely on early processes, only. The high agreement between estimates and the lack of a training effect shows that enough information about viewpoint is extracted in the first few hundred milliseconds to make accurate horizon estimation possible. In Experiment 3 we investigate several strategies to estimate the horizon in the computer and compare human with machine "behavior" for different image manipulations and image scene types.
format	article
author	Christian Herdtweck Christian Wallraven
author_facet	Christian Herdtweck Christian Wallraven
author_sort	Christian Herdtweck
title	Estimation of the horizon in photographed outdoor scenes by human and machine.
title_short	Estimation of the horizon in photographed outdoor scenes by human and machine.
title_full	Estimation of the horizon in photographed outdoor scenes by human and machine.
title_fullStr	Estimation of the horizon in photographed outdoor scenes by human and machine.
title_full_unstemmed	Estimation of the horizon in photographed outdoor scenes by human and machine.
title_sort	estimation of the horizon in photographed outdoor scenes by human and machine.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/660f0b1bc8624b17be74a20223db53c2
work_keys_str_mv	AT christianherdtweck estimationofthehorizoninphotographedoutdoorscenesbyhumanandmachine AT christianwallraven estimationofthehorizoninphotographedoutdoorscenesbyhumanandmachine
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Estimation of the horizon in photographed outdoor scenes by human and machine.

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