Development of a low cost pupillometer-eyetracker and applications

Autores
Bianchetti, Arturo; Perez, Liliana Ines; Comastri, Silvia Ana Elva
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The determination of ocular pupil diameter and gaze direction is important in various psychophysical and cognitive tests and can be accomplished using commercial, academic or open-source devices. In this work we develop a table-top pupillometer eyetracker termed Blick, the hardware costs 50 dollars and the software is open source (https://github.com/abianchetti/blick). The hardware is mounted in a portable holder and comprises an illumination system (two infrared LEDs generating 0.13 W/m2 at 22 cm) and a detection system (containing an USB camera, an infrared filter and a 16mm lens system) The software, programmed in C++ using OpenCV and cvblob libraries, processes eye images in real time and supplies plots and tables of pupil diameter and gaze direction and a video of the eye. As applications, capturing the right eye of six young emmetropes and after performing the pixel-mm and homographic calibrations (required to determine diameter in mm and gaze direction), we conduct three tests. The corresponding tasks are to detect mistakes in three series of four poker cards, to recognize letters F between distractors and to write a sentence via eye movements using Blick as eye tracker and the tool Dasher (MacKays´s Cambridge Group). We obtain that Blick´s performance is satisfactory (errors being 0.05 mm in pupil diameter and 1 degree in gaze direction); that there are slight pupil dilations when subjects used to playing cards find mistakes and when some subjects
find targets and, finally, that Blick can be employed as eyetracker to allow communication of disabled persons. 
Fil: Bianchetti, Arturo. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
Fil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina
Fil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina
Fuente
8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications
Materia
Pupillometer
Eyetracker
Cognitive Tests
Physical Disabilities
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/8389
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Development of a low cost pupillometer-eyetracker and applicationsBianchetti, ArturoPerez, Liliana InesComastri, Silvia Ana ElvaPupillometerEyetrackerCognitive TestsPhysical Disabilitieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The determination of ocular pupil diameter and gaze direction is important in various psychophysical and cognitive tests and can be accomplished using commercial, academic or open-source devices. In this work we develop a table-top pupillometer eyetracker termed Blick, the hardware costs 50 dollars and the software is open source (https://github.com/abianchetti/blick). The hardware is mounted in a portable holder and comprises an illumination system (two infrared LEDs generating 0.13 W/m2 at 22 cm) and a detection system (containing an USB camera, an infrared filter and a 16mm lens system) The software, programmed in C++ using OpenCV and cvblob libraries, processes eye images in real time and supplies plots and tables of pupil diameter and gaze direction and a video of the eye. As applications, capturing the right eye of six young emmetropes and after performing the pixel-mm and homographic calibrations (required to determine diameter in mm and gaze direction), we conduct three tests. The corresponding tasks are to detect mistakes in three series of four poker cards, to recognize letters F between distractors and to write a sentence via eye movements using Blick as eye tracker and the tool Dasher (MacKays´s Cambridge Group). We obtain that Blick´s performance is satisfactory (errors being 0.05 mm in pupil diameter and 1 degree in gaze direction); that there are slight pupil dilations when subjects used to playing cards find mistakes and when some subjects<br />find targets and, finally, that Blick can be employed as eyetracker to allow communication of disabled persons. Fil: Bianchetti, Arturo. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; ArgentinaFil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; ArgentinaFil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; ArgentinaSpie2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/8389Bianchetti, Arturo; Perez, Liliana Ines; Comastri, Silvia Ana Elva; Development of a low cost pupillometer-eyetracker and applications; Spie; Spie; 8785; 11-2013; 1-150277-786X8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applicationsreponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicasenginfo:eu-repo/semantics/altIdentifier/doi/10.1117/12.2021054info:eu-repo/semantics/altIdentifier/url/http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1782418info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/2026-03-31T15:07:13Zoai:ri.conicet.gov.ar:11336/8389instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-03-31 15:07:13.725CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Development of a low cost pupillometer-eyetracker and applications
title Development of a low cost pupillometer-eyetracker and applications
spellingShingle Development of a low cost pupillometer-eyetracker and applications
Bianchetti, Arturo
Pupillometer
Eyetracker
Cognitive Tests
Physical Disabilities
title_short Development of a low cost pupillometer-eyetracker and applications
title_full Development of a low cost pupillometer-eyetracker and applications
title_fullStr Development of a low cost pupillometer-eyetracker and applications
title_full_unstemmed Development of a low cost pupillometer-eyetracker and applications
title_sort Development of a low cost pupillometer-eyetracker and applications
dc.creator.none.fl_str_mv Bianchetti, Arturo
Perez, Liliana Ines
Comastri, Silvia Ana Elva
author Bianchetti, Arturo
author_facet Bianchetti, Arturo
Perez, Liliana Ines
Comastri, Silvia Ana Elva
author_role author
author2 Perez, Liliana Ines
Comastri, Silvia Ana Elva
author2_role author
author
dc.subject.none.fl_str_mv Pupillometer
Eyetracker
Cognitive Tests
Physical Disabilities
topic Pupillometer
Eyetracker
Cognitive Tests
Physical Disabilities
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The determination of ocular pupil diameter and gaze direction is important in various psychophysical and cognitive tests and can be accomplished using commercial, academic or open-source devices. In this work we develop a table-top pupillometer eyetracker termed Blick, the hardware costs 50 dollars and the software is open source (https://github.com/abianchetti/blick). The hardware is mounted in a portable holder and comprises an illumination system (two infrared LEDs generating 0.13 W/m2 at 22 cm) and a detection system (containing an USB camera, an infrared filter and a 16mm lens system) The software, programmed in C++ using OpenCV and cvblob libraries, processes eye images in real time and supplies plots and tables of pupil diameter and gaze direction and a video of the eye. As applications, capturing the right eye of six young emmetropes and after performing the pixel-mm and homographic calibrations (required to determine diameter in mm and gaze direction), we conduct three tests. The corresponding tasks are to detect mistakes in three series of four poker cards, to recognize letters F between distractors and to write a sentence via eye movements using Blick as eye tracker and the tool Dasher (MacKays´s Cambridge Group). We obtain that Blick´s performance is satisfactory (errors being 0.05 mm in pupil diameter and 1 degree in gaze direction); that there are slight pupil dilations when subjects used to playing cards find mistakes and when some subjects<br />find targets and, finally, that Blick can be employed as eyetracker to allow communication of disabled persons. 
Fil: Bianchetti, Arturo. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
Fil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina
Fil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería; Argentina
description The determination of ocular pupil diameter and gaze direction is important in various psychophysical and cognitive tests and can be accomplished using commercial, academic or open-source devices. In this work we develop a table-top pupillometer eyetracker termed Blick, the hardware costs 50 dollars and the software is open source (https://github.com/abianchetti/blick). The hardware is mounted in a portable holder and comprises an illumination system (two infrared LEDs generating 0.13 W/m2 at 22 cm) and a detection system (containing an USB camera, an infrared filter and a 16mm lens system) The software, programmed in C++ using OpenCV and cvblob libraries, processes eye images in real time and supplies plots and tables of pupil diameter and gaze direction and a video of the eye. As applications, capturing the right eye of six young emmetropes and after performing the pixel-mm and homographic calibrations (required to determine diameter in mm and gaze direction), we conduct three tests. The corresponding tasks are to detect mistakes in three series of four poker cards, to recognize letters F between distractors and to write a sentence via eye movements using Blick as eye tracker and the tool Dasher (MacKays´s Cambridge Group). We obtain that Blick´s performance is satisfactory (errors being 0.05 mm in pupil diameter and 1 degree in gaze direction); that there are slight pupil dilations when subjects used to playing cards find mistakes and when some subjects<br />find targets and, finally, that Blick can be employed as eyetracker to allow communication of disabled persons. 
publishDate 2013
dc.date.none.fl_str_mv 2013-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/8389
Bianchetti, Arturo; Perez, Liliana Ines; Comastri, Silvia Ana Elva; Development of a low cost pupillometer-eyetracker and applications; Spie; Spie; 8785; 11-2013; 1-15
0277-786X
url http://hdl.handle.net/11336/8389
identifier_str_mv Bianchetti, Arturo; Perez, Liliana Ines; Comastri, Silvia Ana Elva; Development of a low cost pupillometer-eyetracker and applications; Spie; Spie; 8785; 11-2013; 1-15
0277-786X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1117/12.2021054
info:eu-repo/semantics/altIdentifier/url/http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1782418
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Spie
publisher.none.fl_str_mv Spie
dc.source.none.fl_str_mv 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications
reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.822162

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