An investigation of the distribution of gaze estimation errors in head mounted gaze trackers using polynomial functions

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Autores
Mardanbegi, Diako
Morimoto, Carlos H.
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Citações na Scopus
Tipo de documento
Artigo Científico
Data
2018
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Primeira_Pagina_Artigo_2018_An_investigation_of_the distribution_of_gaze_estimation_errors_in_head_mounted_gaze_trackers_using_polynomial_functions_TC.pdf (66.17 KB)
ACESSO_RESTRITO_Artigo_2018_An_investigation_of_the distribution_of_gaze_estimation_errors_in_head_mounted_gaze_trackers_using_polynomial_functions_TC.pdf (2.49 MB)
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Second order polynomials are commonly used for estimating the point-of-gaze in head-mounted eye trackers. Studies in remote (desktop) eye trackers show that although some non-standard 3rd order polynomial models could provide better accuracy, high-order polynomials do not necessarily provide better results. Different than remote setups though, where gaze is estimated over a relatively narrow field-of-view surface (e.g. less than 30x20 degrees on typical computer displays), head-mounted gaze trackers (HMGT) are often desired to cover a relatively wider field-of-view to make sure that the gaze is detected in the scene image even for extreme eye angles. In this paper we investigate the behavior of the gaze estimation error distribution throughout the image of the scene camera when using polynomial functions. Using simulated scenarios, we describe effects of four different sources of error: interpolation, extrapolation, parallax, and radial distortion. We show that the use of third order polynomials result in more accurate gaze estimates in HMGT, and that the use of wide angle lenses might be beneficial in terms of error reduction.

Palavras-chave
Eye tracking; Faze estimation; Head-mounted eye tracking; Polynomial map- ping; Error distribution
Titulo de periódico
Journal of Eye Movement Research
URL da fonte
https://bop.unibe.ch/JEMR/article/view/4183
DOI
10.16910/jemr.11.3.5
Título de Livro
URL na Scopus
Idioma
Inglês
URL permanente
https://repositorio.insper.edu.br/handle/11224/7221
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Área do Conhecimento CNPQ
CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO

ENGENHARIAS::ENGENHARIA ELETRICA::MEDIDAS ELETRICAS, MAGNETICAS E ELETRONICAS INSTRUMENTACAO::INSTRUMENTACAO ELETRONICA

CIENCIAS EXATAS E DA TERRA::MATEMATICA::MATEMATICA APLICADA

ENGENHARIAS::ENGENHARIA BIOMEDICA::BIOENGENHARIA
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Coleção de Artigos Acadêmicos
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