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Recognition of low-quality face images remains a challenge due to invisible or deformation in partial facial regions. For low-quality images dominated by missing partial facial regions, local region similarity contributes more to face…

计算机视觉与模式识别 · 计算机科学 2024-12-09 Wang Yu , Wei Wei

Federated Learning (FL) enables collaborative training across multiple clients while preserving data privacy, yet it struggles with data heterogeneity, where clients' data are not distributed independently and identically (non-IID). This…

机器学习 · 计算机科学 2025-12-16 Incheol Baek , Hyungbin Kim , Minseo Kim , Yon Dohn Chung

Recent advancements in keypoint detection and descriptor extraction have shown impressive performance in local feature learning tasks. However, existing methods generally exhibit suboptimal performance under extreme conditions such as…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Jingtai He , Gehao Zhang , Tingting Liu , Songlin Du

Feature matching and finding correspondences between endoscopic images is a key step in many clinical applications such as patient follow-up and generation of panoramic image from clinical sequences for fast anomalies localization.…

计算机视觉与模式识别 · 计算机科学 2022-08-25 Manel Farhat , Houda Chaabouni-Chouayakh , Achraf Ben-Hamadou

In this paper, we propose a new unsupervised feature learning framework, namely Deep Sparse Coding (DeepSC), that extends sparse coding to a multi-layer architecture for visual object recognition tasks. The main innovation of the framework…

机器学习 · 计算机科学 2013-12-23 Yunlong He , Koray Kavukcuoglu , Yun Wang , Arthur Szlam , Yanjun Qi

Deep learning frameworks allowed for a remarkable advancement in semantic segmentation, but the data hungry nature of convolutional networks has rapidly raised the demand for adaptation techniques able to transfer learned knowledge from…

计算机视觉与模式识别 · 计算机科学 2020-11-26 Marco Toldo , Umberto Michieli , Pietro Zanuttigh

Source-free Unsupervised Domain Adaptation (SFDA) aims to classify target samples by only accessing a pre-trained source model and unlabelled target samples. Since no source data is available, transferring the knowledge from the source…

计算机视觉与模式识别 · 计算机科学 2024-05-14 Jinkun Jiang , Qingxuan Lv , Yuezun Li , Yong Du , Sheng Chen , Hui Yu , Junyu Dong

Federated learning allows multiple clients to collaboratively train a model without exchanging their data, thus preserving data privacy. Unfortunately, it suffers significant performance degradation due to heterogeneous data at clients.…

机器学习 · 计算机科学 2023-10-19 Tailin Zhou , Jun Zhang , Danny H. K. Tsang

Deep neural networks have shown the ability to extract universal feature representations from data such as images and text that have been useful for a variety of learning tasks. However, the fruits of representation learning have yet to be…

机器学习 · 计算机科学 2023-03-28 Liam Collins , Hamed Hassani , Aryan Mokhtari , Sanjay Shakkottai

Recently, deep neural networks have demonstrated comparable and even better performance with board-certified ophthalmologists in well-annotated datasets. However, the diversity of retinal imaging devices poses a significant challenge:…

图像与视频处理 · 电气工程与系统科学 2019-10-18 Peng Liu , Bin Kong , Zhongyu Li , Shaoting Zhang , Ruogu Fang

There exist many high-dimensional data in real-world applications such as biology, computer vision, and social networks. Feature selection approaches are devised to confront with high-dimensional data challenges with the aim of efficient…

机器学习 · 计算机科学 2021-06-22 Mohsen Ghassemi Parsa , Hadi Zare , Mehdi Ghatee

We propose a new shape analysis approach based on the non-local analysis of local shape variations. Our method relies on a novel description of shape variations, called Local Probing Field (LPF), which describes how a local probing operator…

计算几何 · 计算机科学 2017-11-03 Julie Digne , Sébastien Valette , Raphaëlle Chaine

The rapid advancement of deepfake generation techniques has intensified the need for robust and generalizable detection methods. Existing approaches based on reconstruction learning typically leverage deep convolutional networks to extract…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Mingliang Li , Lin Yuanbo Wu , Changhong Liu , Hanxi Li

When the task of locating manipulation regions in partially-fake audio (PFA) involves cross-domain datasets, the performance of deep learning models drops significantly due to the shift between the source and target domains. To address this…

声音 · 计算机科学 2024-07-12 Siding Zeng , Jiangyan Yi , Jianhua Tao , Yujie Chen , Shan Liang , Yong Ren , Xiaohui Zhang

Unsupervised domain adaptation (UDA) is a critical challenge in the field of point cloud analysis. Previous works tackle the problem either by feature extractor adaptation to enable a shared classifier to distinguish domain-invariant…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Zicheng Wang , Zhen Zhao , Yiming Wu , Luping Zhou , Dong Xu

Unsupervised domain adaptation has been widely adopted to generalize models for unlabeled data in a target domain, given labeled data in a source domain, whose data distributions differ from the target domain. However, existing works are…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Weiming Zhuang , Xin Gan , Yonggang Wen , Xuesen Zhang , Shuai Zhang , Shuai Yi

In this work, we propose a novel methodology for self-supervised learning for generating global and local attention-aware visual features. Our approach is based on training a model to differentiate between specific image transformations of…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Trung X. Pham , Rusty John Lloyd Mina , Dias Issa , Chang D. Yoo

Thanks to recent advances in CNNs, solid improvements have been made in semantic segmentation of high resolution remote sensing imagery. However, most of the previous works have not fully taken into account the specific difficulties that…

计算机视觉与模式识别 · 计算机科学 2017-09-04 Ryuhei Hamaguchi , Aito Fujita , Keisuke Nemoto , Tomoyuki Imaizumi , Shuhei Hikosaka

This paper presents a simple yet very effective data-driven approach to fuse both low-level and high-level local geometric features for 3D rigid data matching. It is a common practice to generate distinctive geometric descriptors by fusing…

计算机视觉与模式识别 · 计算机科学 2019-04-30 Jiaqi Yang , Chen Zhao , Ke Xian , Angfan Zhu , Zhiguo Cao

Most existing person re-identification (Re-ID) approaches follow a supervised learning framework, in which a large number of labelled matching pairs are required for training. Such a setting severely limits their scalability in real-world…

计算机视觉与模式识别 · 计算机科学 2018-07-12 Shan Lin , Haoliang Li , Chang-Tsun Li , Alex Chichung Kot