The effect of calibration errors on the accuracy of the eye movement recordings
For calibrating eye movement recordings, a regression between spatially defined calibration points and corresponding measured raw data is performed. Based on this regression, a confidence interval (CI) of the actually measured eye position can be calculated in order to quantify the measurement error...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Bern Open Publishing
2008-08-01
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| Series: | Journal of Eye Movement Research |
| Subjects: | |
| Online Access: | https://bop.unibe.ch/JEMR/article/view/2238 |
| _version_ | 1818609320707751936 |
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| author | Jörg Hoormann Stephanie Jainta Wolfgang Jaschinski |
| author_facet | Jörg Hoormann Stephanie Jainta Wolfgang Jaschinski |
| author_sort | Jörg Hoormann |
| collection | DOAJ |
| description | For calibrating eye movement recordings, a regression between spatially defined calibration points and corresponding measured raw data is performed. Based on this regression, a confidence interval (CI) of the actually measured eye position can be calculated in order to quantify the measurement error introduced by inaccurate calibration coefficients. For calculating this CI, a standard deviation (SD) - depending on the calibration quality and the design of the calibration procedure - is needed. Examples of binocular recordings with separate monocular calibrations illustrate that the SD is almost independent of the number and spatial separation between the calibration points – even though the later was expected from theoretical simulation. Our simulations and recordings demonstrate that the SD depends critically on residuals at certain calibration points, thus robust regressions are suggested. |
| first_indexed | 2024-12-16T14:56:40Z |
| format | Article |
| id | doaj.art-b1e651fca9124d44b17663a35f27587c |
| institution | Directory Open Access Journal |
| issn | 1995-8692 |
| language | English |
| last_indexed | 2024-12-16T14:56:40Z |
| publishDate | 2008-08-01 |
| publisher | Bern Open Publishing |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj.art-b1e651fca9124d44b17663a35f27587c2022-12-21T22:27:25ZengBern Open PublishingJournal of Eye Movement Research1995-86922008-08-011210.16910/jemr.1.2.3The effect of calibration errors on the accuracy of the eye movement recordingsJörg Hoormann0Stephanie Jainta1Wolfgang Jaschinski2Leibniz Research Center for Working Environment and Human FactorsLeibniz Research Center for Working Environment and Human FactorsLeibniz Research Center for Working Environment and Human FactorsFor calibrating eye movement recordings, a regression between spatially defined calibration points and corresponding measured raw data is performed. Based on this regression, a confidence interval (CI) of the actually measured eye position can be calculated in order to quantify the measurement error introduced by inaccurate calibration coefficients. For calculating this CI, a standard deviation (SD) - depending on the calibration quality and the design of the calibration procedure - is needed. Examples of binocular recordings with separate monocular calibrations illustrate that the SD is almost independent of the number and spatial separation between the calibration points – even though the later was expected from theoretical simulation. Our simulations and recordings demonstrate that the SD depends critically on residuals at certain calibration points, thus robust regressions are suggested.https://bop.unibe.ch/JEMR/article/view/2238eye-movementcalibrationconfidence intervalrobust regression |
| spellingShingle | Jörg Hoormann Stephanie Jainta Wolfgang Jaschinski The effect of calibration errors on the accuracy of the eye movement recordings Journal of Eye Movement Research eye-movement calibration confidence interval robust regression |
| title | The effect of calibration errors on the accuracy of the eye movement recordings |
| title_full | The effect of calibration errors on the accuracy of the eye movement recordings |
| title_fullStr | The effect of calibration errors on the accuracy of the eye movement recordings |
| title_full_unstemmed | The effect of calibration errors on the accuracy of the eye movement recordings |
| title_short | The effect of calibration errors on the accuracy of the eye movement recordings |
| title_sort | effect of calibration errors on the accuracy of the eye movement recordings |
| topic | eye-movement calibration confidence interval robust regression |
| url | https://bop.unibe.ch/JEMR/article/view/2238 |
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