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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

While the fine-grained visual categorization (FGVC) problems have been greatly developed in the past years, the Ultra-fine-grained visual categorization (Ultra-FGVC) problems have been understudied. FGVC aims at classifying objects from the…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Zicheng Pan , Xiaohan Yu , Miaohua Zhang , Yongsheng Gao

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

We present SemiOccam, an image recognition network that leverages semi-supervised learning in a highly efficient manner. Existing works often rely on complex training techniques and architectures, requiring hundreds of GPU hours for…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Rui Yann , Tianshuo Zhang , Xianglei Xing

Compared to supervised learning, semi-supervised learning reduces the dependence of deep learning on a large number of labeled samples. In this work, we use a small number of labeled samples and perform data augmentation on unlabeled…

Machine Learning · Computer Science 2020-01-14 Qiuyu Zhu , Tiantian Li

A semi-supervised learning framework using the feedforward-designed convolutional neural networks (FF-CNNs) is proposed for image classification in this work. One unique property of FF-CNNs is that no backpropagation is used in model…

Computer Vision and Pattern Recognition · Computer Science 2019-02-07 Yueru Chen , Yijing Yang , Min Zhang , C. -C. Jay Kuo

ImageNet Large Scale Visual Recognition Challenge (ILSVRC) is one of the most authoritative academic competitions in the field of Computer Vision (CV) in recent years. But applying ILSVRC's annual champion directly to fine-grained visual…

Computer Vision and Pattern Recognition · Computer Science 2020-07-22 Fan Zhang , Meng Li , Guisheng Zhai , Yizhao Liu

Deep learning methodologies have been employed in several different fields, with an outstanding success in image recognition applications, such as material quality control, medical imaging, autonomous driving, etc. Deep learning models rely…

Computer Vision and Pattern Recognition · Computer Science 2022-03-11 Saul Calderon-Ramirez , Shengxiang Yang , David Elizondo

Successful fine-grained image classification methods learn subtle details between visually similar (sub-)classes, but the problem becomes significantly more challenging if the details are missing due to low resolution. Encouraged by the…

Computer Vision and Pattern Recognition · Computer Science 2017-10-17 Dingding Cai , Ke Chen , Yanlin Qian , Joni-Kristian Kämäräinen

Fine-grained visual categorization (FGVC) is a challenging task due to similar visual appearances between various species. Previous studies always implicitly assume that the training and test data have the same underlying distributions, and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-11 Shuo Ye , Shujian Yu , Wenjin Hou , Yu Wang , Xinge You

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

Self-Supervised Learning (SSL) has become a prominent approach for acquiring visual representations across various tasks, yet its application in fine-grained visual recognition (FGVR) is challenged by the intricate task of distinguishing…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Zihu Wang , Lingqiao Liu , Scott Ricardo Figueroa Weston , Samuel Tian , Peng Li

Semi-weakly supervised semantic segmentation (SWSSS) aims to train a model to identify objects in images based on a small number of images with pixel-level labels, and many more images with only image-level labels. Most existing SWSSS…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Wonho Bae , Junhyug Noh , Milad Jalali Asadabadi , Danica J. Sutherland

FungiCLEF 2024 addresses the fine-grained visual categorization (FGVC) of fungi species, with a focus on identifying poisonous species. This task is challenging due to the size and class imbalance of the dataset, subtle inter-class…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Christopher Chiu , Maximilian Heil , Teresa Kim , Anthony Miyaguchi

Fine-grained visual classification (FGVC) involves classifying closely related sub-classes. This task is difficult due to the subtle differences between classes and the high intra-class variance. Moreover, FGVC datasets are typically small…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Eyal Michaeli , Ohad Fried

In this paper, we address the problem of generalized category discovery (GCD), \ie, given a set of images where part of them are labelled and the rest are not, the task is to automatically cluster the images in the unlabelled data,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Bingchen Zhao , Xin Wen , Kai Han

We propose techniques to incorporate coarse taxonomic labels to train image classifiers in fine-grained domains. Such labels can often be obtained with a smaller effort for fine-grained domains such as the natural world where categories are…

Computer Vision and Pattern Recognition · Computer Science 2021-11-24 Jong-Chyi Su , Subhransu Maji

In this paper, we propose a deep invertible hybrid model which integrates discriminative and generative learning at a latent space level for semi-supervised few-shot classification. Various tasks for classifying new species from image data…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Yusuke Ohtsubo , Tetsu Matsukawa , Einoshin Suzuki

One paradigm for learning from few labeled examples while making best use of a large amount of unlabeled data is unsupervised pretraining followed by supervised fine-tuning. Although this paradigm uses unlabeled data in a task-agnostic way,…

Machine Learning · Computer Science 2020-10-27 Ting Chen , Simon Kornblith , Kevin Swersky , Mohammad Norouzi , Geoffrey Hinton

WebFG 2020 is an international challenge hosted by Nanjing University of Science and Technology, University of Edinburgh, Nanjing University, The University of Adelaide, Waseda University, etc. This challenge mainly pays attention to the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-01 Xiu-Shen Wei , Yu-Yan Xu , Yazhou Yao , Jia Wei , Si Xi , Wenyuan Xu , Weidong Zhang , Xiaoxin Lv , Dengpan Fu , Qing Li , Baoying Chen , Haojie Guo , Taolue Xue , Haipeng Jing , Zhiheng Wang , Tianming Zhang , Mingwen Zhang