We introduce an algorithm for space-variant filtering of video based on a spatio-temporal Laplacian pyramid and use this algorithm to render videos in order to visualize prerecorded eye movements. Spatio-temporal contrast and colour saturation are reduced as a function of distance to the nearest gaze point of regard, i.e. non-fixated, distracting regions are filtered out, whereas fixated image regions remain unchanged. Results of an experiment in which the eye movements of an expert on instructional videos are visualized with this algorithm, so that the gaze of novices is guided to relevant image locations, show that this visualization technique facilitates the novices' perceptual learning.
|Title of host publication||ETRA '10 Proceedings of the 2010 Symposium on Eye-Tracking Research & Applications|
|Number of pages||8|
|Place of Publication||New York, NY, USA|
|Publication status||Published - 22.03.2010|
|Event||Eye Tracking Research and Applications - Austin, United States|
Duration: 22.03.2010 → 24.03.2010