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In this paper we exploit Semi-Supervised Learning (SSL) to increase the amount of training data to improve the performance of Fine-Grained Visual Categorization (FGVC). This problem has not been investigated in the past in spite of…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Daniele Mugnai , Federico Pernici , Francesco Turchini , Alberto Del Bimbo

Vehicle detection in remote sensing images has attracted increasing interest in recent years. However, its detection ability is limited due to lack of well-annotated samples, especially in densely crowded scenes. Furthermore, since a list…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Xin Wu , Wei Li , Danfeng Hong , Jiaojiao Tian , Ran Tao , Qian Du

Fine-Grained Visual Categorization (FGVC) has achieved significant progress recently. However, the number of fine-grained species could be huge and dynamically increasing in real scenarios, making it difficult to recognize unseen objects…

Computer Vision and Pattern Recognition · Computer Science 2017-07-05 Hantao Yao , Shiliang Zhang , Yongdong Zhang , Jintao Li , Qi Tian

Unsupervised learning technology has caught up with or even surpassed supervised learning technology in general object classification (GOC) and person re-identification (re-ID). However, it is found that the unsupervised learning of…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Jiabao Wang , Yang Li , Xiu-Shen Wei , Hang Li , Zhuang Miao , Rui Zhang

Fine-grained visual categorization (FGVC) aims to discriminate similar subcategories, whose main challenge is the large intraclass diversities and subtle inter-class differences. Existing FGVC methods usually select discriminant regions…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Yu Wang , Shuo Ye , Shujian Yu , Xinge You

Fine-grained Visual Recognition (FGVR) involves distinguishing between visually similar categories, which is inherently challenging due to subtle inter-class differences and the need for large, expert-annotated datasets. In domains like…

Computer Vision and Pattern Recognition · Computer Science 2025-05-05 Hari Chandana Kuchibhotla , Sai Srinivas Kancheti , Abbavaram Gowtham Reddy , Vineeth N Balasubramanian

Automatic License Plate Recognition (ALPR) is a challenging area of research due to its importance to variety of commercial applications. The overall problem may be subdivided into two key modules, firstly, localization of license plates…

Computer Vision and Pattern Recognition · Computer Science 2015-01-26 Satadal Saha , Subhadip Basu , Mita Nasipuri , Dipak Kumar Basu

Data is the foundation for the development of computer vision, and the establishment of datasets plays an important role in advancing the techniques of fine-grained visual categorization~(FGVC). In the existing FGVC datasets used in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Shuo Ye , Shiming Chen , Ruxin Wang , Tianxu Wu , Jiamiao Xu , Salman Khan , Fahad Shahbaz Khan , Ling Shao

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

Vehicle detection and annotation for streaming video data with complex scenes is an interesting but challenging task for urban traffic surveillance. In this paper, we present a fast framework of Detection and Annotation for Vehicles (DAVE),…

Computer Vision and Pattern Recognition · Computer Science 2016-08-02 Yi Zhou , Li Liu , Ling Shao , Matt Mellor

This paper introduces a novel two-stage framework for accurate Egyptian Vehicle License Plate Recognition (EVLPR). The first stage employs image processing techniques to reliably localize license plates, while the second stage utilizes a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 M. A. Sayedelahl

Automatic License Plate Recognition (ALPR) is becoming a popular study area and is applied in many fields such as transportation or smart city. However, there are still several limitations when applying many current methods to practical…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Quang Huy Che , Tung Do Thanh , Cuong Truong Van

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

License plate recognition (LPR) involves automated systems that utilize cameras and computer vision to read vehicle license plates. Such plates collected through LPR can then be compared against databases to identify stolen vehicles,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 Nouar AlDahoul , Myles Joshua Toledo Tan , Raghava Reddy Tera , Hezerul Abdul Karim , Chee How Lim , Manish Kumar Mishra , Yasir Zaki

Many industrial and service sectors require tools to extract vehicle characteristics from images. This is a complex task not only by the variety of noise, and large number of classes, but also by the constant introduction of new vehicle…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Andrés Muñoz , Nancy Thomas , Annita Vapsi , Daniel Borrajo

For advanced driver assistance systems, it is crucial to have information about oncoming vehicles as early as possible. At night, this task is especially difficult due to poor lighting conditions. For that, during nighttime, every vehicle…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Lars Ohnemus , Lukas Ewecker , Ebubekir Asan , Stefan Roos , Simon Isele , Jakob Ketterer , Leopold Müller , Sascha Saralajew

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

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

Traditional Automatic License Plate Recognition (ALPR) systems employ multi-stage pipelines consisting of object detection networks followed by separate Optical Character Recognition (OCR) modules, introducing compounding errors, increased…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Karthik Sivakoti

Contrastive Language-Image Pre-training (CLIP) excels in multimodal tasks such as image-text retrieval and zero-shot classification but struggles with fine-grained understanding due to its focus on coarse-grained short captions. To address…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Chunyu Xie , Bin Wang , Fanjing Kong , Jincheng Li , Dawei Liang , Gengshen Zhang , Dawei Leng , Yuhui Yin