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Pose variation and subtle differences in appearance are key challenges to fine-grained classification. While deep networks have markedly improved general recognition, many approaches to fine-grained recognition rely on anchoring networks to…

Computer Vision and Pattern Recognition · Computer Science 2015-11-24 Ning Zhang , Evan Shelhamer , Yang Gao , Trevor Darrell

Ensembles of Convolutional neural networks have shown remarkable results in learning discriminative semantic features for image classification tasks. Though, the models in the ensemble often concentrate on similar regions in images. This…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Tobias Schlagenhauf , Yiwen Lin , Benjamin Noack

Traditional fine-grained image classification generally requires abundant labeled samples to deal with the low inter-class variance but high intra-class variance problem. However, in many scenarios we may have limited samples for some novel…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Chaofei Wang , Shiji Song , Qisen Yang , Xiang Li , Gao Huang

The main challenge for fine-grained few-shot image classification is to learn feature representations with higher inter-class and lower intra-class variations, with a mere few labelled samples. Conventional few-shot learning methods however…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Jijie Wu , Dongliang Chang , Aneeshan Sain , Xiaoxu Li , Zhanyu Ma , Jie Cao , Jun Guo , Yi-Zhe Song

Fine-grained image search is still a challenging problem due to the difficulty in capturing subtle differences regardless of pose variations of objects from fine-grained categories. In practice, a dynamic inventory with new fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 Kevin Lin , Fan Yang , Qiaosong Wang , Robinson Piramuthu

Motion blur, out of focus, insufficient spatial resolution, lossy compression and many other factors can all cause an image to have poor quality. However, image quality is a largely ignored issue in traditional pattern recognition…

Computer Vision and Pattern Recognition · Computer Science 2018-01-22 Fei Yang , Qian Zhang , Miaohui Wang , Guoping Qiu

Our work focuses on tackling large-scale fine-grained image retrieval as ranking the images depicting the concept of interests (i.e., the same sub-category labels) highest based on the fine-grained details in the query. It is desirable to…

Information Retrieval · Computer Science 2023-11-23 Xiu-Shen Wei , Yang Shen , Xuhao Sun , Peng Wang , Yuxin Peng

Few-shot object detection (FSOD) aims at extending a generic detector for novel object detection with only a few training examples. It attracts great concerns recently due to the practical meanings. Meta-learning has been demonstrated to be…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Zichen Wang , Bo Yang , Haonan Yue , Zhenghao Ma

Fine-grained visual recognition is to classify objects with visually similar appearances into subcategories, which has made great progress with the development of deep CNNs. However, handling subtle differences between different…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Yifan Zhao , Jia Li , Xiaowu Chen , Yonghong Tian

Fine-grained text to image synthesis involves generating images from texts that belong to different categories. In contrast to general text to image synthesis, in fine-grained synthesis there is high similarity between images of different…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Xu Ouyang , Ying Chen , Kaiyue Zhu , Gady Agam

Learning feature representation from discriminative local regions plays a key role in fine-grained visual classification. Employing attention mechanisms to extract part features has become a trend. However, there are two major limitations…

Computer Vision and Pattern Recognition · Computer Science 2021-05-06 Jianwei Song , Ruoyu Yang

Learning fine-grained image similarity is a challenging task. It needs to capture between-class and within-class image differences. This paper proposes a deep ranking model that employs deep learning techniques to learn similarity metric…

Computer Vision and Pattern Recognition · Computer Science 2014-04-21 Jiang Wang , Yang song , Thomas Leung , Chuck Rosenberg , Jinbin Wang , James Philbin , Bo Chen , Ying Wu

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

In recent years, hashing methods have been popular in the large-scale media search for low storage and strong representation capabilities. To describe objects with similar overall appearance but subtle differences, more and more studies…

Information Retrieval · Computer Science 2024-01-11 Xin Lu , Shikun Chen , Yichao Cao , Xin Zhou , Xiaobo Lu

In search, exploration, and reconnaissance tasks performed with autonomous ground vehicles, an image classification capability is needed for specifically identifying targeted objects (relevant classes) and at the same time recognize when a…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Spiridon Kasapis , Geng Zhang , Jonathon Smereka , Nickolas Vlahopoulos

Cameras play a crucial role in modern driver assistance systems and are an essential part of the sensor technology for automated driving. The quality of images captured by in-vehicle cameras highly influences the performance of visual…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Florian Bauer

We propose a local modelling approach using deep convolutional neural networks (CNNs) for fine-grained image classification. Recently, deep CNNs trained from large datasets have considerably improved the performance of object recognition.…

Computer Vision and Pattern Recognition · Computer Science 2015-03-02 ZongYuan Ge , Chris McCool , Conrad Sanderson , Peter Corke

Fine-grained image recognition is central to many multimedia tasks such as search, retrieval and captioning. Unfortunately, these tasks are still challenging since the appearance of samples of the same class can be more different than those…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Pau Rodríguez López , Diego Velazquez Dorta , Guillem Cucurull Preixens , Josep M. Gonfaus , F. Xavier Roca Marva , Jordi Gonzàlez Sabaté

Small inter-class and large intra-class variations are the main challenges in fine-grained visual classification. Objects from different classes share visually similar structures and objects in the same class can have different poses and…

Computer Vision and Pattern Recognition · Computer Science 2019-09-09 Amir Erfan Eshratifar , David Eigen , Michael Gormish , Massoud Pedram

Fine-grained image classification has emerged as a significant challenge because objects in such images have small inter-class visual differences but with large variations in pose, lighting, and viewpoints, etc. Most existing work focuses…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Xuelu Li , Vishal Monga