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|a 10.1109/TIP.2013.2290593
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|a eng
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1 |
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|a Gao, Shenghua
|e verfasserin
|4 aut
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| 245 |
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|a Learning Category-Specific Dictionary and Shared Dictionary for Fine-Grained Image Categorization
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|c 2014
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|a Text
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|a ƒaComputermedien
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|a Date Completed 22.10.2015
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|a Date Revised 14.08.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This paper targets fine-grained image categorization by learning a category-specific dictionary for each category and a shared dictionary for all the categories. Such category-specific dictionaries encode subtle visual differences among different categories, while the shared dictionary encodes common visual patterns among all the categories. To this end, we impose incoherence constraints among the different dictionaries in the objective of feature coding. In addition, to make the learnt dictionary stable, we also impose the constraint that each dictionary should be self-incoherent. Our proposed dictionary learning formulation not only applies to fine-grained classification, but also improves conventional basic-level object categorization and other tasks such as event recognition. Experimental results on five data sets show that our method can outperform the state-of-the-art fine-grained image categorization frameworks as well as sparse coding based dictionary learning frameworks. All these results demonstrate the effectiveness of our method
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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1 |
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|a Tsang, Ivor Wai-Hung
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| 700 |
1 |
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|a Ma, Yi
|e verfasserin
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|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 23(2014), 2 vom: 16. Feb., Seite 623-34
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