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Fixation identifica...
Fixation identification in centroid versus start-point modes using eye-tracking data
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- Falkmer, Torbjörn (author)
- Jönköping University,Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Rehabiliteringsmedicin,Habiliteringen: Barn- och ungdomshabiliteringen, LSS Råd och stöd,HHJ, Avdelningen för rehabilitering,HHJ. Åldrande - livsvillkor och hälsa
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- Dahlman, Joakim (author)
- Linköpings universitet,Rehabiliteringsmedicin,Tekniska högskolan
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- Dukic, Tania (author)
- Swedish National Road and Transport, Research Institute, VTI, Gothenburg, Sweden
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- Bjällmark, Anna (author)
- KTH,Medicinsk teknik,School for Technique and Health, KTH, Stockholm, Sweden
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- Larsson, Matilda (author)
- KTH,Medicinsk teknik,School for Technique and Health, KTH, Stockholm, Sweden
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(creator_code:org_t)
- Sage Publications, 2008
- 2008
- English.
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In: Perceptual and Motor Skills. - : Sage Publications. - 0031-5125 .- 1558-688X. ; 106:3, s. 710-724
- Related links:
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http://www.ncbi.nlm....
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http://urn.kb.se/res...
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https://urn.kb.se/re...
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https://doi.org/10.2...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- Fixation-identification algorithms, needed for analyses of eye movements, may typically be separated into three categories, viz. (i) velocity-based algorithms, (ii) area-based algorithms, and (iii) dispersion-based algorithms. Dispersion-based algorithms are commonly used but this application introduces some difficulties, one being optimization. Basically, there are two modes to reach this goal of optimization, viz., the start-point mode and the centroid mode. The aim of the present study was to compare and evaluate these two dispersion-based algorithms. Manual inspections were made of 1,400 fixations in each mode. Odds ratios showed that by using the centroid mode for fixation detection, a valid fixation is 2.86 times more likely to be identified than by using the start-point mode. Moreover, the algorithm based on centroid mode dispersion showed a good interpretation speed, accuracy, robustness, and ease of implementation, as well as adequate parameter settings.
Subject headings
- SAMHÄLLSVETENSKAP -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk laboratorie- och mätteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Laboratory and Measurements Technologies (hsv//eng)
Keyword
- Psychology
- Psykologi
- Medical engineering
- Medicinsk teknik
- MEDICINE
Publication and Content Type
- ref (subject category)
- art (subject category)
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