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Fine-grained visual classification (FGVC) is a challenging computer vision problem, where the task is to automatically recognise objects from subordinate categories. One of its main difficulties is capturing the most discriminative…

Computer Vision and Pattern Recognition · Computer Science 2024-01-03 Dmitry Demidov , Muhammad Hamza Sharif , Aliakbar Abdurahimov , Hisham Cholakkal , Fahad Shahbaz Khan

Fine-grained visual classification (FGVC) is challenging but more critical than traditional classification tasks. It requires distinguishing different subcategories with the inherently subtle intra-class object variations. Previous works…

Computer Vision and Pattern Recognition · Computer Science 2021-03-10 Zhenhuan Huang , Xiaoyue Duan , Bo Zhao , Jinhu Lü , Baochang Zhang

Fine-Grained Visual Recognition (FGVR) tackles the problem of distinguishing highly similar categories. One of the main approaches to FGVR, namely subset learning, tries to leverage information from existing class taxonomies to improve the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Pablo Villacorta , Jesús M. Rodríguez-de-Vera , Marc Bolaños , Ignacio Sarasúa , Bhalaji Nagarajan , Petia Radeva

Training a fine-grained image recognition model with limited data presents a significant challenge, as the subtle differences between categories may not be easily discernible amidst distracting noise patterns. One commonly employed strategy…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Avraham Chapman , Haiming Xu , Lingqiao Liu

Classifying the sub-categories of an object from the same super-category (e.g. bird species, car and aircraft models) in fine-grained visual classification (FGVC) highly relies on discriminative feature representation and accurate region…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Yifeng Ding , Shaoguo Wen , Jiyang Xie , Dongliang Chang , Zhanyu Ma , Zhongwei Si , Haibin Ling

Fine-grained visual classification aims to recognize objects belonging to many subordinate categories of a supercategory, where appearance alone often fails to distinguish highly similar classes. We propose a unified framework that…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Sumit Mamtani , Yash Thesia

The task of Fine-grained Entity Type Classification (FETC) consists of assigning types from a hierarchy to entity mentions in text. Existing methods rely on distant supervision and are thus susceptible to noisy labels that can be…

Computation and Language · Computer Science 2018-04-17 Peng Xu , Denilson Barbosa

The Fine-Grained Visual Categorization (FGVC) is challenging because the subtle inter-class variations are difficult to be captured. One notable research line uses the Global Covariance Pooling (GCP) layer to learn powerful representations…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Yue Song , Nicu Sebe , Wei Wang

Whether what you see in Figure 1 is a "flamingo" or a "bird", is the question we ask in this paper. While fine-grained visual classification (FGVC) strives to arrive at the former, for the majority of us non-experts just "bird" would…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Dongliang Chang , Kaiyue Pang , Yixiao Zheng , Zhanyu Ma , Yi-Zhe Song , Jun Guo

Different from large-scale classification tasks, fine-grained visual classification is a challenging task due to two critical problems: 1) evident intra-class variances and subtle inter-class differences, and 2) overfitting owing to fewer…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Hang Yao , Qiguang Miao , Peipei Zhao , Chaoneng Li , Xin Li , Guanwen Feng , Ruyi Liu

We present a novel deep convolutional neural network (DCNN) system for fine-grained image classification, called a mixture of DCNNs (MixDCNN). The fine-grained image classification problem is characterised by large intra-class variations…

Computer Vision and Pattern Recognition · Computer Science 2015-12-01 ZongYuan Ge , Alex Bewley , Christopher McCool , Ben Upcroft , Peter Corke , Conrad Sanderson

Fine-Grained Visual Categorization (FGVC) is a challenging topic in computer vision. It is a problem characterized by large intra-class differences and subtle inter-class differences. In this paper, we tackle this problem in a weakly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Ashiq Imran , Vassilis Athitsos

Fine-Grained Visual Classification (FGVC) aims to categorize closely related subclasses, a task complicated by minimal inter-class differences and significant intra-class variance. Existing methods often rely on additional annotations for…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Pengxiang Gao , Yihao Liang , Yanzhi Song , Zhouwang Yang

Fine-grained image classification is a challenging task due to the large intra-class variance and small inter-class variance, aiming at recognizing hundreds of sub-categories belonging to the same basic-level category. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2017-11-29 Xiangteng He , Yuxin Peng

Few-shot fine-grained visual classification (FGVC) aims to leverage limited data to enable models to discriminate subtly distinct categories. Recent works mostly finetuned the pre-trained visual language models to achieve performance gain,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Hongyu Guo , Xiangzhao Hao , Jiarui Guo , Haiyun Guo , Jinqiao Wang , Tat-Seng Chua

Fine-grained visual recognition aims to capture discriminative characteristics amongst visually similar categories. The state-of-the-art research work has significantly improved the fine-grained recognition performance by deep metric…

Computer Vision and Pattern Recognition · Computer Science 2017-03-02 Yan Bai , Feng Gao , Yihang Lou , Shiqi Wang , Tiejun Huang , Ling-Yu Duan

Fine-grained visual categorization is to recognize hundreds of subcategories belonging to the same basic-level category, which is a highly challenging task due to the quite subtle and local visual distinctions among similar subcategories.…

Computer Vision and Pattern Recognition · Computer Science 2019-02-21 Xiangteng He , Yuxin Peng

Transferring the knowledge learned from large scale datasets (e.g., ImageNet) via fine-tuning offers an effective solution for domain-specific fine-grained visual categorization (FGVC) tasks (e.g., recognizing bird species or car make and…

Computer Vision and Pattern Recognition · Computer Science 2018-06-19 Yin Cui , Yang Song , Chen Sun , Andrew Howard , Serge Belongie

Fine Grained Visual Categorization (FGVC) remains a challenging task in computer vision due to subtle inter class differences and fragile feature representations. Existing methods struggle in fine grained scenarios, especially when labeled…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Mingquan Liu

Any entity in the visual world can be hierarchically grouped based on shared characteristics and mapped to fine-grained sub-categories. While Multi-modal Large Language Models (MLLMs) achieve strong performance on coarse-grained visual…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Hulingxiao He , Zijun Geng , Yuxin Peng