Compensating for camera translation in video eye movement recordings by tracking a landmark selected automatically by a genetic algorithm

Faisal Karmali, Mark J Shelhamer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We develop a method for accurately estimating the motion of a camera relative to a highly deformable surface, specifically the movement of a camera relative to the eye. A small rectangular landmark is selected and tracked throughout a set of video frames as a measure of vertical camera translation. The specific goal is to present a process based on a genetic algorithm that selects a suitable landmark. We find that co-correlation, a statistic relating the time series of a large population of landmarks, is a robust predictor of the accuracy of the landmarks. This statistic is used to iteratlvely select the best landmark from the population. At each iteration new landmarks are created that inherit properties of the previous population of landmarks. We show that the algorithm can select a landmark that will estimate camera translation with an accuracy of 1.8 pixels, which means that the direction the eye is looking can be determined with an accuracy of better than 0.6°.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Pages5298-5301
Number of pages4
DOIs
Publication statusPublished - 2006
Event28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06 - New York, NY, United States
Duration: Aug 30 2006Sep 3 2006

Other

Other28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
CountryUnited States
CityNew York, NY
Period8/30/069/3/06

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ASJC Scopus subject areas

  • Bioengineering

Cite this

Karmali, F., & Shelhamer, M. J. (2006). Compensating for camera translation in video eye movement recordings by tracking a landmark selected automatically by a genetic algorithm. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (pp. 5298-5301). [4029752] https://doi.org/10.1109/IEMBS.2006.259945