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Title: Active visual segmentation
Authors: Mishra, A.K.
Aloimonos, Y.
Cheong, L.F. 
Kassim, A. 
Keywords: cue integration
Fixation-based segmentation
object segmentation
polar space
scale invariance
visual attention
Issue Date: 2012
Citation: Mishra, A.K., Aloimonos, Y., Cheong, L.F., Kassim, A. (2012). Active visual segmentation. IEEE Transactions on Pattern Analysis and Machine Intelligence 34 (4) : 639-653. ScholarBank@NUS Repository.
Abstract: Attention is an integral part of the human visual system and has been widely studied in the visual attention literature. The human eyes fixate at important locations in the scene, and every fixation point lies inside a particular region of arbitrary shape and size, which can either be an entire object or a part of it. Using that fixation point as an identification marker on the object, we propose a method to segment the object of interest by finding the "optimal" closed contour around the fixation point in the polar space, avoiding the perennial problem of scale in the Cartesian space. The proposed segmentation process is carried out in two separate steps: First, all visual cues are combined to generate the probabilistic boundary edge map of the scene; second, in this edge map, the "optimal" closed contour around a given fixation point is found. Having two separate steps also makes it possible to establish a simple feedback between the mid-level cue (regions) and the low-level visual cues (edges). In fact, we propose a segmentation refinement process based on such a feedback process. Finally, our experiments show the promise of the proposed method as an automatic segmentation framework for a general purpose visual system. © 2012 IEEE.
Source Title: IEEE Transactions on Pattern Analysis and Machine Intelligence
ISSN: 01628828
DOI: 10.1109/TPAMI.2011.171
Appears in Collections:Staff Publications

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