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TOAN: Target-Oriented Alignment Network for Fine-Grained Image Categorization with Few Labeled Samples

2020-05-28 07:48:44
Huaxi Huang, Junjie Zhang, Jian Zhang, Qiang Wu, Chang Xu

Abstract

The challenges of high intra-class variance yet low inter-class fluctuations in fine-grained visual categorization are more severe with few labeled samples, \textit{i.e.,} Fine-Grained categorization problems under the Few-Shot setting (FGFS). High-order features are usually developed to uncover subtle differences between sub-categories in FGFS, but they are less effective in handling the high intra-class variance. In this paper, we propose a Target-Oriented Alignment Network (TOAN) to investigate the fine-grained relation between the target query image and support classes. The feature of each support image is transformed to match the query ones in the embedding feature space, which reduces the disparity explicitly within each category. Moreover, different from existing FGFS approaches devise the high-order features over the global image with less explicit consideration of discriminative parts, we generate discriminative fine-grained features by integrating compositional concept representations to global second-order pooling. Extensive experiments are conducted on four fine-grained benchmarks to demonstrate the effectiveness of TOAN compared with the state-of-the-art models.

Abstract (translated)

URL

https://arxiv.org/abs/2005.13820

PDF

https://arxiv.org/pdf/2005.13820.pdf


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