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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

Graph sampling with noise is a fundamental problem in graph signal processing (GSP). Previous works assume an unbiased least square (LS) signal reconstruction scheme and select samples greedily via expensive extreme eigenvector computation.…

Signal Processing · Electrical Eng. & Systems 2019-02-19 Yuanchao Bai , Gene Cheung , Fen Wang , Xianming Liu , Wen Gao

A sketch is a probabilistic data structure used to record frequencies of items in a multi-set. Sketches are widely used in various fields, especially those that involve processing and storing data streams. In streaming applications with…

Data Structures and Algorithms · Computer Science 2017-02-08 Tong Yang , Lingtong Liu , Yibo Yan , Muhammad Shahzad , Yulong Shen , Xiaoming Li , Bin Cui , Gaogang Xie

Improving the image resolution and acquisition speed of magnetic resonance imaging (MRI) is a challenging problem. There are mainly two strategies dealing with the speed-resolution trade-off: (1) $k$-space undersampling with high-resolution…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Wenqi Huang , Sen Jia , Ziwen Ke , Zhuo-Xu Cui , Jing Cheng , Yanjie Zhu , Dong Liang

Fine-grained bird image classification (FBIC) is not only of great significance for ecological monitoring and species identification, but also holds broad research value in the fields of image recognition and fine-grained visual modeling.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Zheng Wang

Metric-based few-shot fine-grained image classification (FSFGIC) aims to learn a transferable feature embedding network by estimating the similarities between query images and support classes from very few examples. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Weichuan Zhang , Xuefang Liu , Zhe Xue , Yongsheng Gao , Changming Sun

Fine-grained visual categorization (FGVC) is challenging due in part to the fact that it is often difficult to acquire an enough number of training samples. To employ large models for FGVC without suffering from overfitting, existing…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Yabin Zhang , Hui Tang , Kui Jia

Feature reconstruction techniques are widely applied for few-shot fine-grained image classification (FSFGIC). Our research indicates that one of the main challenges facing existing feature-based FSFGIC methods is how to choose the size of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Linyue Zhang , Wenyi Zeng , Zicheng Pan , Yongsheng Gao , Changming Sun , Jun Hu , Lixian Liu , Weichuan Zhang , Tuo Wang

We propose Sym-Net, a novel framework for Few-Shot Segmentation (FSS) that addresses the critical issue of intra-class variation by jointly learning both query and support prototypes in a symmetrical manner. Unlike previous methods that…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Qun Li , Baoquan Sun , Fu Xiao , Yonggang Qi , Bir Bhanu

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

Few-shot fine-grained recognition (FS-FGR) aims to recognize novel fine-grained categories with the help of limited available samples. Undoubtedly, this task inherits the main challenges from both few-shot learning and fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2023-01-20 Zican Zha , Hao Tang , Yunlian Sun , Jinhui Tang

Traditional model-based image reconstruction (MBIR) methods combine forward and noise models with simple object priors. Recent application of deep learning methods for image reconstruction provides a successful data-driven approach to…

Image and Video Processing · Electrical Eng. & Systems 2022-05-20 Ling Chen , Zhishen Huang , Yong Long , Saiprasad Ravishankar

Generating reliable pseudo masks from image-level labels is challenging in the weakly supervised semantic segmentation (WSSS) task due to the lack of spatial information. Prevalent class activation map (CAM)-based solutions are challenged…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Xu Yin , Woobin Im , Dongbo Min , Yuchi Huo , Fei Pan , Sung-Eui Yoon

Modern data stream applications demand memory-efficient solutions for accurately tracking frequent items, such as heavy hitters and heavy changers, under strict resource constraints. Traditional sketches face inherent accuracy-memory…

Databases · Computer Science 2025-05-20 Zicang Xu , Yuxuan Tian , Yuhan Wu , Tong Yang

Fine-grained image classification (FGIC) is a challenging task in computer vision for due to small visual differences among inter-subcategories, but, large intra-class variations. Deep learning methods have achieved remarkable success in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Asish Bera , Debotosh Bhattacharjee , Mita Nasipuri

Large-scale fine-grained image retrieval has two main problems. First, low dimensional feature embedding can fasten the retrieval process but bring accuracy reduce due to overlooking the feature of significant attention regions of images in…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Qi Zhao , Xu Wang , Shuchang Lyu , Binghao Liu , Yifan Yang

Zero-Shot Sketch-Based Image Retrieval (ZSSBIR) is an emerging task. The pioneering work focused on the modal gap but ignored inter-class information. Although recent work has begun to consider the triplet-based or contrast-based loss to…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Haoxiang Zhang , He Jiang , Ziqiang Wang , Deqiang Cheng

Stereo image super-resolution (stereoSR) aims to enhance the quality of super-resolution results by incorporating complementary information from an alternative view. Although current methods have shown significant advancements, they…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Hu Gao , Depeng Dang

Fine-grained image recognition is a longstanding computer vision challenge that focuses on differentiating objects belonging to multiple subordinate categories within the same meta-category. Since images belonging to the same meta-category…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Yifan Pu , Yizeng Han , Yulin Wang , Junlan Feng , Chao Deng , Gao Huang

Pre-trained vision-language models (VLMs) excel in multimodal tasks, commonly encoding images as embedding vectors for storage in databases and retrieval via approximate nearest neighbor search (ANNS). However, these models struggle with…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Ofer Idan , Vladi Vexler , Gil Lederman , Dima Sivov , Aviad Cohen Zada , Shir Niego Komforti
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