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  • Fine-Grained Image Analysis...
    Wei, Xiu-Shen; Song, Yi-Zhe; Aodha, Oisin Mac; Wu, Jianxin; Peng, Yuxin; Tang, Jinhui; Yang, Jian; Belongie, Serge

    IEEE transactions on pattern analysis and machine intelligence, 12/2022, Letnik: 44, Številka: 12
    Journal Article

    Fine-grained image analysis (FGIA) is a longstanding and fundamental problem in computer vision and pattern recognition, and underpins a diverse set of real-world applications. The task of FGIA targets analyzing visual objects from subordinate categories, e.g., species of birds or models of cars. The small inter-class and large intra-class variation inherent to fine-grained image analysis makes it a challenging problem. Capitalizing on advances in deep learning, in recent years we have witnessed remarkable progress in deep learning powered FGIA. In this paper we present a systematic survey of these advances, where we attempt to re-define and broaden the field of FGIA by consolidating two fundamental fine-grained research areas - fine-grained image recognition and fine-grained image retrieval. In addition, we also review other key issues of FGIA, such as publicly available benchmark datasets and related domain-specific applications. We conclude by highlighting several research directions and open problems which need further exploration from the community.