An Unsupervised Learning Approach to Content-based Image Retrieval

Yixin Chen, James Z. Wang
The Pennsylvania State University, University Park, PA 16802

Robert Krovetz
NEC Corporation

''Semantic gap'' is an open challenging problem in content-based image retrieval. It reflects the discrepancy between low-level imagery features used by the ret rieval algorithm and high-level concepts required by system users. This paper in troduces a novel image retrieval scheme, CLUster-based rEtrieval of images by un supervised learning (CLUE), to tackle the semantic gap problem. CLUE is built on a hypothesis that {\it images of the same semantics tend to be clustered}. It a ttempts to narrow the semantic gap by retrieving image clusters based on not onl y the feature similarity of images to the query, but also how images are similar to each other. CLUE has been tested using examples from a database of about $60,000$ general-purpose images. Empirical results demonstrate the effectiveness of CLUE.

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Citation: Yixin Chen, James Z. Wang and Robert Krovetz, ``An Unsupervised Learning Approach to Content-Based Image Retrieval,'' Proc. IEEE International Symposium on Signal Processing and its Applications, vol. 1, pp. 197-200, Paris, France, July 2003.

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Last Modified: July 23 2003