Elimination of Head Shifts in Videooculography
Video-oculography (VOG) is the most suitable eye tracking method in Human Computer Interaction. In remote systems to provide point of regard measurement, head movement elimination must be done. During this study, the head movement elimination methods were investigated. One of them is used in “CameraMouse” system head tracking algorithm, utilizing normalized correlation coefficient, which allows to achieve subpixel accuracy. The noise of evaluated eye gaze is greater than initial pupil center, independent of method used for head movement elimination. No one of examined methods is ideal and acceptable for all situations. Only the combination of them could give better results..Ill. 9, bibl. 5 (in English; summaries in Lithuanian, English, Russian).
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