The Effect of Real-time Headbox Adjustments on Data Quality
Following a patent owned by Tobii, the framerate of a CMOS camera can be increased by reducing the size of the recording window so that it fits the eyes with minimum room to spare. The position of the recording window can be dynamically adjusted within the camera sensor area to follow the eyes as th...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-03-01
|
| Series: | Journal of Eye Movement Research |
| Subjects: | |
| Online Access: | https://bop.unibe.ch/JEMR/article/view/3803 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849726996008927232 |
|---|---|
| author | Pieter Blignaut |
| author_facet | Pieter Blignaut |
| author_sort | Pieter Blignaut |
| collection | DOAJ |
| description | Following a patent owned by Tobii, the framerate of a CMOS camera can be increased by reducing the size of the recording window so that it fits the eyes with minimum room to spare. The position of the recording window can be dynamically adjusted within the camera sensor area to follow the eyes as the participant moves the head. Since only a portion of the camera sensor data is communicated to the computer and processed, much higher framerates can be achieved with the same CPU and camera.
Eye trackers can be expected to present data at a high speed, with good accuracy and precision, small latency and with minimal loss of data while allowing participants to behave as normally as possible. In this study, the effect of headbox adjustments in real-time is investigated with respect to the above-mentioned parameters.
It was found that, for the specific camera model and tracking algorithm, one or two headbox adjustments per second, as would normally be the case during recording of human participants, could be tolerated in favour of a higher framerate. The effect of adjustment of the recording window can be reduced by using a larger recording window at the cost of the framerate. |
| format | Article |
| id | doaj-art-7f8a646340264dcf98d05e8845b8f5f5 |
| institution | DOAJ |
| issn | 1995-8692 |
| language | English |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-7f8a646340264dcf98d05e8845b8f5f52025-08-20T03:09:59ZengMDPI AGJournal of Eye Movement Research1995-86922018-03-0111110.16910/jemr.11.1.4The Effect of Real-time Headbox Adjustments on Data QualityPieter Blignaut0University of the Free State, South AfricaFollowing a patent owned by Tobii, the framerate of a CMOS camera can be increased by reducing the size of the recording window so that it fits the eyes with minimum room to spare. The position of the recording window can be dynamically adjusted within the camera sensor area to follow the eyes as the participant moves the head. Since only a portion of the camera sensor data is communicated to the computer and processed, much higher framerates can be achieved with the same CPU and camera. Eye trackers can be expected to present data at a high speed, with good accuracy and precision, small latency and with minimal loss of data while allowing participants to behave as normally as possible. In this study, the effect of headbox adjustments in real-time is investigated with respect to the above-mentioned parameters. It was found that, for the specific camera model and tracking algorithm, one or two headbox adjustments per second, as would normally be the case during recording of human participants, could be tolerated in favour of a higher framerate. The effect of adjustment of the recording window can be reduced by using a larger recording window at the cost of the framerate.https://bop.unibe.ch/JEMR/article/view/3803Low-cost eye trackingdata qualityhigh framerateshead movement |
| spellingShingle | Pieter Blignaut The Effect of Real-time Headbox Adjustments on Data Quality Journal of Eye Movement Research Low-cost eye tracking data quality high framerates head movement |
| title | The Effect of Real-time Headbox Adjustments on Data Quality |
| title_full | The Effect of Real-time Headbox Adjustments on Data Quality |
| title_fullStr | The Effect of Real-time Headbox Adjustments on Data Quality |
| title_full_unstemmed | The Effect of Real-time Headbox Adjustments on Data Quality |
| title_short | The Effect of Real-time Headbox Adjustments on Data Quality |
| title_sort | effect of real time headbox adjustments on data quality |
| topic | Low-cost eye tracking data quality high framerates head movement |
| url | https://bop.unibe.ch/JEMR/article/view/3803 |
| work_keys_str_mv | AT pieterblignaut theeffectofrealtimeheadboxadjustmentsondataquality AT pieterblignaut effectofrealtimeheadboxadjustmentsondataquality |