| Presentation | 1998/6/18 Optimization of the ocular torsion estimation algorithm in a video based 3-D eye movement measurement system Max Berthold, Hirohiko Kaneko, Nobuaki Uwa, Yasuaki Kanatsugu, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We are developing an algorithm for 3-D(horizontal, vertical and torsion)eye movement measuring, using video images. Horizontal and vertical eye movements correspond to the two-dimensional movements of the pulil's center point on the image plane. The torsion angle is estimated by performing one-dimentional cross-correlation using data sampled along track arcs on the iris. The objective of this study was to investigate how the use of the track arcs affected the algorithm's time consumption as well as the accuracy and precision of the estimated torsion angles. In the first experiment, we investigated the relationship between computation-time and number of track arcs. In the second experiment, the accuracy and precision of estimated torsion angles were investigated for the algorithm using different lengths of track arcs. In the third experiment, we investigated torsion accuracy and precision due to the number of track arcs as well as how to choose cross-correlation values in order to calculate accurate torsion angles. Finally, the precision of the estimated torsion angles was investigated for various view angles. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Eye movement / eye tracking / torsion / cross-correlation / video images |
| Paper # | NC98-15,HIP98-6 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 1998/6/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optimization of the ocular torsion estimation algorithm in a video based 3-D eye movement measurement system |
| Sub Title (in English) | |
| Keyword(1) | Eye movement |
| Keyword(2) | eye tracking |
| Keyword(3) | torsion |
| Keyword(4) | cross-correlation |
| Keyword(5) | video images |
| 1st Author's Name | Max Berthold |
| 1st Author's Affiliation | ATR Human Information Processing Research Laboratories() |
| 2nd Author's Name | Hirohiko Kaneko |
| 2nd Author's Affiliation | ATR Human Information Processing Research Laboratories |
| 3rd Author's Name | Nobuaki Uwa |
| 3rd Author's Affiliation | ATR Human Information Processing Research Laboratories |
| 4th Author's Name | Yasuaki Kanatsugu |
| 4th Author's Affiliation | ATR Human Information Processing Research Laboratories |
| Date | 1998/6/18 |
| Paper # | NC98-15,HIP98-6 |
| Volume (vol) | vol.98 |
| Number (no) | 128 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |