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Generative diffusion models show promise for data augmentation. However, applying them to fine-grained tasks presents a significant challenge: ensuring synthetic images accurately capture the subtle, category-defining features critical for…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Zhiguang Lu , Qianqian Xu , Peisong Wen , Siran Dai , Qingming Huang

Fine-grained object retrieval aims to learn discriminative representation to retrieve visually similar objects. However, existing top-performing works usually impose pairwise similarities on the semantic embedding spaces or design a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Shijie Wang , Jianlong Chang , Zhihui Wang , Haojie Li , Wanli Ouyang , Qi Tian

Fine-Grained Sketch-Based Image Retrieval (FG-SBIR) aims to minimize the distance between sketches and corresponding images in the embedding space. However, scalability is hindered by the growing complexity of solutions, mainly due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Jianan Jiang , Hao Tang , Zhilin Jiang , Weiren Yu , Di Wu

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

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

Recently, generated images could reach very high quality, even human eyes could not tell them apart from real images. Although there are already some methods for detecting generated images in current forensic community, most of these…

Computer Vision and Pattern Recognition · Computer Science 2019-12-25 Xinsheng Xuan , Bo Peng , Wei Wang , Jing Dong

In this work, we propose a geometry-aware semi-supervised framework for fine-grained building function recognition, utilizing geometric relationships among multi-source data to enhance pseudo-label accuracy in semi-supervised learning,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Weijia Li , Jinhua Yu , Dairong Chen , Yi Lin , Runmin Dong , Xiang Zhang , Conghui He , Haohuan Fu

Visual Question Answering (VQA) focuses on providing answers to natural language questions by utilizing information from images. Although cutting-edge multimodal large language models (MLLMs) such as GPT-4o achieve strong performance on VQA…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Zhengxuan Zhang , Yin Wu , Yuyu Luo , Nan Tang

Fine-grained visual classification (FGVC) aims to classify sub-classes of objects in the same super-class (e.g., species of birds, models of cars). For the FGVC tasks, the essential solution is to find discriminative subtle information of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 Chenyu Guo , Jiyang Xie , Kongming Liang , Xian Sun , Zhanyu Ma

Fine-grained open-vocabulary object detection (FG-OVD) aims to detect novel object categories described by attribute-rich texts. While existing open-vocabulary detectors show promise at the base-category level, they underperform in…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Jiaming Li , Zhijia Liang , Weikai Chen , Lin Ma , Guanbin Li

Classifying fine-grained lesions is challenging due to minor and subtle differences in medical images. This is because learning features of fine-grained lesions with highly minor differences is very difficult in training deep neural…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Wongi Park , Jongbin Ryu

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

The reconstruction of indoor scenes from multi-view RGB images is challenging due to the coexistence of flat and texture-less regions alongside delicate and fine-grained regions. Recent methods leverage neural radiance fields aided by…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Sheng Ye , Yubin Hu , Matthieu Lin , Yu-Hui Wen , Wang Zhao , Yong-Jin Liu , Wenping Wang

Different from fine-tuning models pre-trained on a large-scale dataset of preset classes, class-incremental learning (CIL) aims to recognize novel classes over time without forgetting pre-trained classes. However, a given model will be…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Xiang Xiang , Yuwen Tan , Qian Wan , Jing Ma

The class-conditional image generation based on diffusion models is renowned for generating high-quality and diverse images. However, most prior efforts focus on generating images for general categories, e.g., 1000 classes in ImageNet-1k. A…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Ziying Pan , Kun Wang , Gang Li , Feihong He , Yongxuan Lai

Long-term visual localization is the problem of estimating the camera pose of a given query image in a scene whose appearance changes over time. It is an important problem in practice, for example, encountered in autonomous driving. In…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Måns Larsson , Erik Stenborg , Carl Toft , Lars Hammarstrand , Torsten Sattler , Fredrik Kahl

Continual learning is a challenging problem in machine learning, especially for image classification tasks with imbalanced datasets. It becomes even more challenging when it involves learning new classes incrementally. One method for…

Machine Learning · Computer Science 2024-06-14 Sohaib Younis , Bernhard Seeger

Taxonomic classification of ecological families, genera, and species underpins biodiversity monitoring and conservation. Existing computer vision methods typically address fine-grained recognition and long-tailed learning in isolation.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Cheng Yaw Low , Heejoon Koo , Jaewoo Park , Meeyoung Cha

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

Blind iris images, which result from unknown degradation during the process of iris recognition at long distances, often lead to decreased iris recognition rates. Currently, little existing literature offers a solution to this problem. In…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Qi Xiong , Xinman Zhang , Jun Shen