Few-Shot Fine-Grained Image Classification: A Comprehensive Review

Few-shot fine-grained image classification (FSFGIC) methods refer to the classification of images (e.g., birds, flowers, and airplanes) belonging to different subclasses of the same species by a small number of labeled samples. Through feature representation learning, FSFGIC methods can make better...

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Main Authors: Jie Ren, Changmiao Li, Yaohui An, Weichuan Zhang, Changming Sun
Format: Article
Language:English
Published: MDPI AG 2024-03-01
Series:AI
Subjects:
Online Access:https://www.mdpi.com/2673-2688/5/1/20
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author Jie Ren
Changmiao Li
Yaohui An
Weichuan Zhang
Changming Sun
author_facet Jie Ren
Changmiao Li
Yaohui An
Weichuan Zhang
Changming Sun
author_sort Jie Ren
collection DOAJ
description Few-shot fine-grained image classification (FSFGIC) methods refer to the classification of images (e.g., birds, flowers, and airplanes) belonging to different subclasses of the same species by a small number of labeled samples. Through feature representation learning, FSFGIC methods can make better use of limited sample information, learn more discriminative feature representations, greatly improve the classification accuracy and generalization ability, and thus achieve better results in FSFGIC tasks. In this paper, starting from the definition of FSFGIC, a taxonomy of feature representation learning for FSFGIC is proposed. According to this taxonomy, we discuss key issues on FSFGIC (including data augmentation, local and/or global deep feature representation learning, class representation learning, and task-specific feature representation learning). In addition, the existing popular datasets, current challenges and future development trends of feature representation learning on FSFGIC are also described.
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spelling doaj.art-9db9087c0aa34610a97043e4506c1d1a2024-03-27T13:17:12ZengMDPI AGAI2673-26882024-03-015140542510.3390/ai5010020Few-Shot Fine-Grained Image Classification: A Comprehensive ReviewJie Ren0Changmiao Li1Yaohui An2Weichuan Zhang3Changming Sun4College of Electrical and Information, Xi’an Polytechnic University, Xi’an 710048, ChinaCollege of Electrical and Information, Xi’an Polytechnic University, Xi’an 710048, ChinaCollege of Electrical and Information, Xi’an Polytechnic University, Xi’an 710048, ChinaSchool of Electronic Information and Artificial Intelligence, Shaanxi University of Technology and Science, Xi’an 710021, ChinaCSIRO Data61, P.O. Box 76, Epping, NSW 1710, AustraliaFew-shot fine-grained image classification (FSFGIC) methods refer to the classification of images (e.g., birds, flowers, and airplanes) belonging to different subclasses of the same species by a small number of labeled samples. Through feature representation learning, FSFGIC methods can make better use of limited sample information, learn more discriminative feature representations, greatly improve the classification accuracy and generalization ability, and thus achieve better results in FSFGIC tasks. In this paper, starting from the definition of FSFGIC, a taxonomy of feature representation learning for FSFGIC is proposed. According to this taxonomy, we discuss key issues on FSFGIC (including data augmentation, local and/or global deep feature representation learning, class representation learning, and task-specific feature representation learning). In addition, the existing popular datasets, current challenges and future development trends of feature representation learning on FSFGIC are also described.https://www.mdpi.com/2673-2688/5/1/20few-shot fine-grained image classificationfeature representation learningmeta-learningmetric-learning
spellingShingle Jie Ren
Changmiao Li
Yaohui An
Weichuan Zhang
Changming Sun
Few-Shot Fine-Grained Image Classification: A Comprehensive Review
AI
few-shot fine-grained image classification
feature representation learning
meta-learning
metric-learning
title Few-Shot Fine-Grained Image Classification: A Comprehensive Review
title_full Few-Shot Fine-Grained Image Classification: A Comprehensive Review
title_fullStr Few-Shot Fine-Grained Image Classification: A Comprehensive Review
title_full_unstemmed Few-Shot Fine-Grained Image Classification: A Comprehensive Review
title_short Few-Shot Fine-Grained Image Classification: A Comprehensive Review
title_sort few shot fine grained image classification a comprehensive review
topic few-shot fine-grained image classification
feature representation learning
meta-learning
metric-learning
url https://www.mdpi.com/2673-2688/5/1/20
work_keys_str_mv AT jieren fewshotfinegrainedimageclassificationacomprehensivereview
AT changmiaoli fewshotfinegrainedimageclassificationacomprehensivereview
AT yaohuian fewshotfinegrainedimageclassificationacomprehensivereview
AT weichuanzhang fewshotfinegrainedimageclassificationacomprehensivereview
AT changmingsun fewshotfinegrainedimageclassificationacomprehensivereview