期刊
2021 IEEE/CVF CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, CVPR 2021
卷 -, 期 -, 页码 15074-15083出版社
IEEE COMPUTER SOC
DOI: 10.1109/CVPR46437.2021.01483
关键词
-
资金
- National Natural Science Foundation of China [61922006]
- Baidu Academic Collaboration Program
- CAAI-Huawei MindSpore Open Fund
This study proposes an effective graph-based relation discovery approach to build a contextual understanding of high-order relationships in fine-grained object recognition. The approach utilizes a high-dimensional feature bank with semantic- and positional-aware high-order constraints, and embeds it into a low-dimensional space through a graph-based semantic grouping strategy. Collaborative learning of three modules helps achieve new state-of-the-art performance on widely-used benchmarks in fine-grained object recognition.
Fine-grained object recognition aims to learn effective features that can identify the subtle differences between visually similar objects. Most of the existing works tend to amplify discriminative part regions with attention mechanisms. Besides its unstable performance under complex backgrounds, the intrinsic interrelationship between different semantic features is less explored. Toward this end, we propose an effective graph-based relation discovery approach to build a contextual understanding of high-order relationships. In our approach, a high-dimensional feature bank is first formed and jointly regularized with semantic- and positional-aware high-order constraints, endowing rich attributes to feature representations. Second, to overcome the high-dimension curse, we propose a graph-based semantic grouping strategy to embed this high-order tensor bank into a low-dimensional space. Meanwhile, a group-wise learning strategy is proposed to regularize the features focusing on the cluster embedding center. With the collaborative learning of three modules, our module is able to grasp the stronger contextual details of fine-grained objects. Experimental evidence demonstrates our approach achieves new state-of-the-art on 4 widely-used fine-grained object recognition benchmarks.
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