Minimum Probability of Error Image Retrieval (Foundations and Trends(r) in Signal Processing) Book PDF, ePub eBook

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Book Descriptions:
The recent availability of massive amounts of imagery, both at home and on the Internet, has generated substantial interest in systems for automated image search and retrieval. Minimum Probability of Error Image Retrieval: From Visual Features to Image Semantics reviews a principle for the design of such systems, which formulates the retrieval problem as one of decision-theory. Under this principle, a retrieval system searches the images that are likely to satisfy the query with minimum probability of error (MPE). It is shown how the MPE principle can be used to design optimal solutions for practical retrieval problems. This involves a characterization of the fundamental performance bounds of the MPE retrieval architecture, and the use of these bounds to derive optimal components for retrieval systems. Minimum Probability of Error Image Retrieval: From Visual Features to Image Semantics also shows that many alternative formulations of the retrieval problem are closely related to the MPE principle, typically resulting from simplifications or approximations of the MPE architecture. The MPE principle can be applied to the design of retrieval systems that work at different levels of abstraction. For instance, Query-by-visual-example (QBVE) systems are strictly visual, matching images by similarity of low-level features, such as texture or color. This is usually insufficient to produce perceptually satisfying results, since human users tend to make similarity judgments on the basis of image semantics, not visual attributes. This problem is addressed by the introduction of MPE labeling techniques, which associate descriptive keywords with images, enabling their search with text queries. This involves computing the probabilities with which different concepts explain each image. This monograph also shows how the query by example paradigm is then combined with these probabilities, by performing MPE image matching in the associated probability simplex. This is denoted query-by-semantic-example, (QBSE) and enables example-based retrieval by similarity of semantics. Minimum Probability of Error Image Retrieval: From Visual Features to Image Semantics is an ideal reference for anyone with an interest in image retrieval generally and the MPE retrieval framework in particular.

Minimum Probability of Error Image Retrieval (Foundations and Trends(r) in Signal Processing) by Nuno Vasconcelos, Manuela Vasconcelos

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