dc.contributor.authorLi, Zhen
dc.contributor.authorYap, Kim-Hui
dc.identifier.citationLi, Z., & Yap, K.-H. (2013). An efficient approach for scene categorization based on discriminative codebook learning in bag-of-words framework. Image and Vision Computing, 31(10), 748-755.en_US
dc.description.abstractThis paper proposes an efficient technique for learning a discriminative codebook for scene categorization. A state-of-the-art approach for scene categorization is the Bag-of-Words (BoW) framework, where codebook generation plays an important role in determining the performance of the system. Traditionally, the codebook generation methods adopted in the BoW techniques are designed to minimize the quantization error, rather than optimize the classification accuracy. In view of this, this paper tries to address the issue by careful design of the codewords such that the resulting image histograms for each category will retain strong discriminating power, while the online categorization of the testing image is as efficient as in the baseline BoW. The codewords are refined iteratively to improve their discriminative power offline. The proposed method is validated on UIUC Scene-15 dataset and NTU Scene-25 dataset and it is shown to outperform other state-of-the-art codebook generation methods in scene categorization.en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.relation.ispartofseriesImage and Vision Computingen_US
dc.rights© 2013 Elsevier.en_US
dc.subjectScene categorizationen_US
dc.subjectCodebook learningen_US
dc.titleAn efficient approach for scene categorization based on discriminative codebook learning in bag-of-words frameworken_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US

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