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dc.contributor.authorWang, Jim Jing-Yan
dc.contributor.authorAlmasri, Islam
dc.date.accessioned2015-08-04T07:02:09Z
dc.date.available2015-08-04T07:02:09Z
dc.date.issued2012
dc.identifier.citationWang, J., & Almasri, I. (2012). Modeling Multiple Visual Words Assignment for Bag-of-Features based Medical Image Retrieval. Signal Processing, Pattern Recognition and Applications / 779: Computer Graphics and Imaging. doi:10.2316/p.2012.779-015
dc.identifier.isbn9780889869219
dc.identifier.doi10.2316/P.2012.779-015
dc.identifier.urihttp://hdl.handle.net/10754/564483
dc.description.abstractIn this paper, we investigate the bag-of-features based medical image retrieval methods, which represent an image as a collection of local features, such as image patch and key points with SIFT descriptor. To improve the bag-of-features method, we first model the assignment of local descriptor as contribution functions, and then propose a new multiple assignment strategy. By assuming the local feature can be reconstructed by its neighboring visual words in vocabulary, we solve the reconstruction weights as a QP problem and then use the solved weights as contribution functions, which results in a new assignment method called the QP assignment. We carry our experiments on ImageCLEFmed datasets. Experiments' results show that our proposed method exceeds the performances of traditional solutions and works well for the bag-of-features based medical image retrieval tasks.
dc.publisherACTA Press
dc.subjectBag-of-features
dc.subjectMedical image retrieval
dc.subjectMultiple assignment
dc.subjectQuadratic programming
dc.titleModeling multiple visual words assignment for bag-of-features based medical image retrieval
dc.typeConference Paper
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentComputer Science Program
dc.contributor.departmentComputational Bioscience Research Center (CBRC)
dc.identifier.journalSignal Processing, Pattern Recognition and Applications / 779: Computer Graphics and Imaging
dc.conference.date18 June 2012 through 20 June 2012
dc.conference.nameIASTED International Conference on Computer Graphics and Imaging, CGIM 2012
dc.conference.locationCrete
kaust.personWang, Jim Jing-Yan
kaust.personAlmasri, Islam


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