Dog Breed Classification Using Part Localization
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- 作者：Jiongxin Liu (21)
Angjoo Kanazawa (22)
David Jacobs (22)
Peter Belhumeur (21) - 刊名：Lecture Notes in Computer Science
- 出版年：2012
- 出版时间：2012
- 年：2012
- 卷：7572
- 期：1
- 页码：186-199
- 全文大小：2162KB
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Angjoo Kanazawa (22)
David Jacobs (22)
Peter Belhumeur (21)
21. Columbia University, USA
22. University of Maryland, USA
文摘
We propose a novel approach to fine-grained image classification in which instances from different classes share common parts but have wide variation in shape and appearance. We use dog breed identification as a test case to show that extracting corresponding parts improves classification performance. This domain is especially challenging since the appearance of corresponding parts can vary dramatically, e.g., the faces of bulldogs and beagles are very different. To find accurate correspondences, we build exemplar-based geometric and appearance models of dog breeds and their face parts. Part correspondence allows us to extract and compare descriptors in like image locations. Our approach also features a hierarchy of parts (e.g., face and eyes) and breed-specific part localization. We achieve 67% recognition rate on a large real-world dataset including 133 dog breeds and 8,351 images, and experimental results show that accurate part localization significantly increases classification performance compared to state-of-the-art approaches.