Text-Embedded Bilinear Model for Fine-Grained Visual Recognition

12 Oct 2020  ·  Liang Sun, Xiang Guan, Yang Yang, Lei Zhang ·

Fine-grained visual recognition, which aims to identify subcategories of the same base-level category, is a challenging task because of its large intra-class variances and small inter-class variances. Human beings can perform object recognition task based on not only the visual appearance but also the knowledge from texts, as texts can point out the discriminative parts or characteristics which are always the key to distinguishing different subcategories... This is an involuntary transfer from human textual attention to visual attention, suggesting that texts are able to assist fine-grained recognition. In this paper, we propose a Text-Embedded Bilinear (TEB) model which incorporates texts as extra guidance for fine-grained recognition. Specially, we first conduct a text-embedded network to embed text feature into the discriminative image feature learning to get a embedded feature. In addition, since the cross-layer part feature interaction and fine-grained feature learning are mutually correlated and can reinforce each other, we also extract a candidate feature from the text encoder and embed it into the inter-layer feature of the image encoder to get an embedded candidate feature. At last we utilize a cross-layer bilinear network to fuse the two embedded features. Comparing with state-of-the-art methods on the widely used CUB-200-2011 dataset and Oxford Flowers-102 dataset for fine-grained image recognition, the experimental results demonstrate our TEB model achieves the best performance. read more



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