Geometrical cues in visual saliency models for active object recognition in egocentric videos
Résumé
In the problem of “human sensing”, videos recorded with wearable cameras give an “egocentric” view of the world, capturing details of human activities. In this paper we continue research on visual saliency for such kind of content with the goal of “active” objects recognition in egocentric videos. In particular, a geometrical cue is considered in case when the central-bias hypothesis does not hold. The proposed visual saliency models are trained based on eye fixations of observers and incorporated into spatio-temporal saliency models. The proposed models have been compared to state of the art visual saliency models using a metric based on target object recognition performances. The results are promising:they highlight the necessity of a non-centered geometric saliency cue.