Analysis and categorization of eye tracking data describing scanpaths
| DWPI Title: Computing system for processing eye tracking data, has processor for outputting indication that first scanpath corresponds to second scanpath, responsive to determining that first scanpath corresponds to second scanpath |
| Abstract: Described herein are various technologies pertaining to analysis of eye tracking data. A head and/or eyes of an observer who is viewing a visual stimulus is monitored, and eye tracking data that is representative of the path of the eyes of the observer over time (a scanpath) is generated. The eye tracking data is time-series data that defines the location of the focal point, or other measurable characteristics, of the eyes of the observer on the visual stimulus over time. A feature vector is constructed based upon the eye tracking data, where the feature vector is representative of the eye tracking data, and is thus representative of the scanpath. The feature vector is compared with other feature vectors to identify scanpaths that correspond to the scanpath represented by the feature vector. |
| Use: Computing system for processing eye tracking data. |
| Advantage: The computing system can construct an n-dimensional feature vector based upon the eye tracking data. The eye tracking data corresponding to feature vectors in a cluster can be retrieved for presentation on a display thus allowing for an operator to visually inspect the eye tracking data. |
| Novelty: The system (150) has processor (202) for receiving eye tracking data (208) for a first scanpath. The eye tracking data is segmented into multiple segments. A first p-dimensional feature vector (214) is constructed based upon the first segment. A second p-dimensional feature vector is constructed based upon the second segment. An n-dimensional feature vector is constructed based upon features of the eye tracking data. The n-dimensional feature vector comprises the first p-dimensional feature vector and the second p-dimensional feature vector. A determination is made that the first scanpath corresponds to a second scanpath based upon the n-dimensional feature vector. An indication that the first scanpath corresponds to the second scanpath is outputted, responsive to determining that the first scanpath corresponds to the second scanpath. |
| Filed: 11/7/2016 |
| Application Number: US15345318A |
| Tech ID: SD 13547.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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