Exterior orientation of hyperspectral frame images collected with UAV for forest applications
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5194/isprsarchives-XL-3-W4-45-2016 http://hdl.handle.net/11449/172901 |
Resumo: | This paper describes a preliminary study on the image orientation acquired by a hyperspectral frame camera for applications in small tropical forest areas with dense vegetation. Since access to the interior of forests is complicated and Ground Control Points (GCPs) are not available, this study conducts an assessment of the altimetry accuracy provided by control targets installed on one border of an image block, simulating it outside a forest. A lightweight Unmanned Aerial Vehicle (UAV) was equipped with a hyperspectral camera and a dual-frequency GNSS receiver to collect images at two flying strips covering a vegetation area. The assessment experiments were based on Bundle Block Adjustment (BBA) with images of two spectral bands (from two sensors) using several weighted constraints in the camera position. Trials with GCPs (presignalized targets) positioned only on one side of the image block were compared with trials using GCPs in the corners. Analyses were performed on altimetry discrepancies obtained from altimetry checkpoints. The results showed a discrepancy in Z coordinate of approximately 40 cm using the proposed technique, which is sufficient for applications in forests. |
id |
UNSP_a9782a91b34be1baeb351c7b2e0d8c26 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/172901 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Exterior orientation of hyperspectral frame images collected with UAV for forest applicationsForestHyperspectral imageOrientationSparse controlUAVThis paper describes a preliminary study on the image orientation acquired by a hyperspectral frame camera for applications in small tropical forest areas with dense vegetation. Since access to the interior of forests is complicated and Ground Control Points (GCPs) are not available, this study conducts an assessment of the altimetry accuracy provided by control targets installed on one border of an image block, simulating it outside a forest. A lightweight Unmanned Aerial Vehicle (UAV) was equipped with a hyperspectral camera and a dual-frequency GNSS receiver to collect images at two flying strips covering a vegetation area. The assessment experiments were based on Bundle Block Adjustment (BBA) with images of two spectral bands (from two sensors) using several weighted constraints in the camera position. Trials with GCPs (presignalized targets) positioned only on one side of the image block were compared with trials using GCPs in the corners. Analyses were performed on altimetry discrepancies obtained from altimetry checkpoints. The results showed a discrepancy in Z coordinate of approximately 40 cm using the proposed technique, which is sufficient for applications in forests.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Graduate Program in Cartographic Sciences Univ Estadual Paulista - UNESP Faculty of Science and TechnologyDepartment of Cartography Univ Estadual Paulista - UNESP Faculty of Science and TechnologyGraduate Program in Cartographic Sciences Univ Estadual Paulista - UNESP Faculty of Science and TechnologyDepartment of Cartography Univ Estadual Paulista - UNESP Faculty of Science and TechnologyFAPESP: 2013/50426-4FAPESP: 2014/05533-7Universidade Estadual Paulista (Unesp)Berveglieri, A. [UNESP]Tommaselli, A. M.G. [UNESP]2018-12-11T17:02:38Z2018-12-11T17:02:38Z2016-03-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject45-50application/pdfhttp://dx.doi.org/10.5194/isprsarchives-XL-3-W4-45-2016International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, v. 40, n. 3W4, p. 45-50, 2016.1682-1750http://hdl.handle.net/11449/17290110.5194/isprsarchives-XL-3-W4-45-20162-s2.0-849648262662-s2.0-84964826266.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archivesinfo:eu-repo/semantics/openAccess2024-06-18T15:02:39Zoai:repositorio.unesp.br:11449/172901Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:09:34.424140Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
title |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
spellingShingle |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications Berveglieri, A. [UNESP] Forest Hyperspectral image Orientation Sparse control UAV |
title_short |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
title_full |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
title_fullStr |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
title_full_unstemmed |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
title_sort |
Exterior orientation of hyperspectral frame images collected with UAV for forest applications |
author |
Berveglieri, A. [UNESP] |
author_facet |
Berveglieri, A. [UNESP] Tommaselli, A. M.G. [UNESP] |
author_role |
author |
author2 |
Tommaselli, A. M.G. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Berveglieri, A. [UNESP] Tommaselli, A. M.G. [UNESP] |
dc.subject.por.fl_str_mv |
Forest Hyperspectral image Orientation Sparse control UAV |
topic |
Forest Hyperspectral image Orientation Sparse control UAV |
description |
This paper describes a preliminary study on the image orientation acquired by a hyperspectral frame camera for applications in small tropical forest areas with dense vegetation. Since access to the interior of forests is complicated and Ground Control Points (GCPs) are not available, this study conducts an assessment of the altimetry accuracy provided by control targets installed on one border of an image block, simulating it outside a forest. A lightweight Unmanned Aerial Vehicle (UAV) was equipped with a hyperspectral camera and a dual-frequency GNSS receiver to collect images at two flying strips covering a vegetation area. The assessment experiments were based on Bundle Block Adjustment (BBA) with images of two spectral bands (from two sensors) using several weighted constraints in the camera position. Trials with GCPs (presignalized targets) positioned only on one side of the image block were compared with trials using GCPs in the corners. Analyses were performed on altimetry discrepancies obtained from altimetry checkpoints. The results showed a discrepancy in Z coordinate of approximately 40 cm using the proposed technique, which is sufficient for applications in forests. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-17 2018-12-11T17:02:38Z 2018-12-11T17:02:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5194/isprsarchives-XL-3-W4-45-2016 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, v. 40, n. 3W4, p. 45-50, 2016. 1682-1750 http://hdl.handle.net/11449/172901 10.5194/isprsarchives-XL-3-W4-45-2016 2-s2.0-84964826266 2-s2.0-84964826266.pdf |
url |
http://dx.doi.org/10.5194/isprsarchives-XL-3-W4-45-2016 http://hdl.handle.net/11449/172901 |
identifier_str_mv |
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, v. 40, n. 3W4, p. 45-50, 2016. 1682-1750 10.5194/isprsarchives-XL-3-W4-45-2016 2-s2.0-84964826266 2-s2.0-84964826266.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
45-50 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129166423359488 |