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Object-graphs for context-aware category discovery

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2 Author(s)
Yong Jae Lee ; Univ. of Texas at Austin, Austin, TX, USA ; Grauman, K.

How can knowing about some categories help us to discover new ones in unlabeled images? Unsupervised visual category discovery is useful to mine for recurring objects without human supervision, but existing methods assume no prior information and thus tend to perform poorly for cluttered scenes with multiple objects. We propose to leverage knowledge about previously learned categories to enable more accurate discovery. We introduce a novel object-graph descriptor to encode the layout of object-level co-occurrence patterns relative to an unfamiliar region, and show that by using it to model the interaction between an image's known and unknown objects we can better detect new visual categories. Rather than mine for all categories from scratch, our method identifies new objects while drawing on useful cues from familiar ones. We evaluate our approach on benchmark datasets and demonstrate clear improvements in discovery over conventional purely appearance-based baselines.

Published in:

Computer Vision and Pattern Recognition (CVPR), 2010 IEEE Conference on

Date of Conference:

13-18 June 2010

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