BibSonomy publications for /user/lm77/PicHunter,Tue Dec 04 05:18:34 CET 2007Proceedings of the International Conference on Computer Vision and Pattern RecognitionToward Optimal Search of Image Databases1998Implementation PicHunter, Tue Dec 04 05:18:34 CET 2007Vienna, AustriaProceedings of the International Conference on Pattern RecognitionPicHunter: Bayesian Relevance Feedback for Image Retrieval1996Bayesian, Feedback Implementation, PicHunter, Relevance Tue Dec 04 05:18:34 CET 2007Washington D.C.Advanced Digital Libraries ForumTarget Testing and the {P}ic{H}unter {B}ayesian Multimedia Retrieval System1996Bayesian, Feedback Implementation, PicHunter, Relevance Tue Dec 04 05:18:34 CET 2007IEEE Transactions on Image ProcessingJanuary120--37The {B}ayesian image retrieval system, {P}ic{H}unter: theory, implementation, and psychophysical experiments92000Feedback Implementation, PicHunter, Relevance Presents the theory, design principles, implementation and performance results of PicHunter, a prototype content-based image retrieval (CBIR) system. In addition, this document presents the rationale, design and results of psychophysical experiments that were conducted to address some key issues that arose during PicHunter's development. The PicHunter project makes four primary contributions to research on CBIR. First, PicHunter represents a simple instance of a general Bayesian framework which we describe for using relevance feedback to direct a search. With an explicit model of what users would do, given the target image they want, PicHunter uses Bayes's rule to predict the target they want, given their actions. This is done via a probability distribution over possible image targets, rather than by refining a query. Second, an entropy-minimizing display algorithm is described that attempts to maximize the information obtained from a user at each iteration of the search. Third, PicHunter makes use of hidden annotation rather than a possibly inaccurate/inconsistent annotation structure that the user must learn and make queries in. Finally, PicHunter introduces two experimental paradigms to quantitatively evaluate the performance of the system, and psychophysical experiments are presented that support the theoretical claims.