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Despite recent advancements in deep learning, deep neural networks continue to suffer from performance degradation when applied to new data that differs from training data. Test-time adaptation (TTA) aims to address this challenge by…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Sanghun Jung , Jungsoo Lee , Nanhee Kim , Amirreza Shaban , Byron Boots , Jaegul Choo

Self-supervised monocular depth estimation has received much attention recently in computer vision. Most of the existing works in literature aggregate multi-scale features for depth prediction via either straightforward concatenation or…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Zhengming Zhou , Qiulei Dong

Frozen pretrained image representations are widely used for transfer learning: a backbone is kept fixed, feature vectors are extracted, and a lightweight classifier is trained on top. This pipeline usually feeds the full feature vector to…

机器学习 · 计算机科学 2026-05-12 Indar Kumar , Girish Karhana , Sai Krishna Jasti , Ankit Hemant Lade

Deformable image registration establishes non-linear spatial correspondences between fixed and moving images. Deep learning-based deformable registration methods have been widely studied in recent years due to their speed advantage over…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Yihao Liu , Junyu Chen , Lianrui Zuo , Aaron Carass , Jerry L. Prince

For a long time, anomaly localization has been widely used in industries. Previous studies focused on approximating the distribution of normal features without adaptation to a target dataset. However, since anomaly localization should…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Sungwook Lee , Seunghyun Lee , Byung Cheol Song

The single domain generalization(SDG) based on meta-learning has emerged as an effective technique for solving the domain-shift problem. However, the inadequate match of data distribution between source and augmented domains and difficult…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Can Sun , Hao Zheng , Zhigang Hu , Liu Yang , Meiguang Zheng , Bo Xu

Understanding the training dynamics of deep learning models is perhaps a necessary step toward demystifying the effectiveness of these models. In particular, how do data from different classes gradually become separable in their feature…

机器学习 · 计算机科学 2021-10-13 Jiayao Zhang , Hua Wang , Weijie J. Su

Representations learned via self-supervised learning (SSL) can be susceptible to dimensional collapse, where the learned representation subspace is of extremely low dimensionality and thus fails to represent the full data distribution and…

We introduce a method called multi-scale local shape analysis, or MLSA, for extracting features that describe the local structure of points within a dataset. The method uses both geometric and topological features at multiple levels of…

计算几何 · 计算机科学 2014-10-14 Paul Bendich , Ellen Gasparovic , John Harer , Rauf Izmailov , Linda Ness

The federated learning (FL) framework trains a machine learning model using decentralized data stored at edge client devices by periodically aggregating locally trained models. Popular optimization algorithms of FL use vanilla (stochastic)…

机器学习 · 计算机科学 2021-06-07 Jianyu Wang , Zheng Xu , Zachary Garrett , Zachary Charles , Luyang Liu , Gauri Joshi

Unsupervised industrial anomaly detection (UAD) is essential for modern manufacturing inspection, where defect samples are scarce and reliable detection is required. In this paper, we propose HLGFA, a high-low resolution guided feature…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Han Zhou , Yuxuan Gao , Yinchao Du , Xuezhe Zheng

Unsupervised domain adaptation has increasingly gained interest in medical image computing, aiming to tackle the performance degradation of deep neural networks when being deployed to unseen data with heterogeneous characteristics. In this…

图像与视频处理 · 电气工程与系统科学 2020-02-07 Cheng Chen , Qi Dou , Hao Chen , Jing Qin , Pheng Ann Heng

Feature selection methods have an important role on the readability of data and the reduction of complexity of learning algorithms. In recent years, a variety of efforts are investigated on feature selection problems based on unsupervised…

机器学习 · 计算机科学 2019-12-12 Mohsen Ghassemi Parsa , Hadi Zare , Mehdi Ghatee

We introduce a paradigm for nonlocal sparsity reinforced deep convolutional neural network denoising. It is a combination of a local multiscale denoising by a convolutional neural network (CNN) based denoiser and a nonlocal denoising based…

图像与视频处理 · 电气工程与系统科学 2018-08-15 Cristóvão Cruz , Alessandro Foi , Vladimir Katkovnik , Karen Egiazarian

Although unsupervised domain adaptation methods have been widely adopted across several computer vision tasks, it is more desirable if we can exploit a few labeled data from new domains encountered in a real application. The novel setting…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Taekyung Kim , Changick Kim

Face anti-spoofing (FAS) heavily relies on identifying live/spoof discriminative features to counter face presentation attacks. Recently, we proposed LDCformer to successfully incorporate the Learnable Descriptive Convolution (LDC) into…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Pei-Kai Huanga , Jun-Xiong Chong , Ming-Tsung Hsu , Fang-Yu Hsu , Chiou-Ting Hsu

Facial action unit (AU) detection and face alignment are two highly correlated tasks since facial landmarks can provide precise AU locations to facilitate the extraction of meaningful local features for AU detection. Most existing AU…

计算机视觉与模式识别 · 计算机科学 2018-11-20 Zhiwen Shao , Zhilei Liu , Jianfei Cai , Lizhuang Ma

The high-dimensional nature of the 4-D light field (LF) poses great challenges in achieving efficient and effective feature embedding, that severely impacts the performance of downstream tasks. To tackle this crucial issue, in contrast to…

图像与视频处理 · 电气工程与系统科学 2024-01-12 Xianqiang Lyu , Junhui Hou

With the development of deep learning, the field of face anti-spoofing (FAS) has witnessed great progress. FAS is usually considered a classification problem, where each class is assumed to contain a single cluster optimized by softmax…

计算机视觉与模式识别 · 计算机科学 2023-05-17 Qinghong Sun , Zhenfei Yin , Yichao Wu , Yuanhan Zhang , Jing Shao

Manifold learning (ML) aims to seek low-dimensional embedding from high-dimensional data. The problem is challenging on real-world datasets, especially with under-sampling data, and we find that previous methods perform poorly in this case.…

机器学习 · 计算机科学 2022-07-27 Zelin Zang , Siyuan Li , Di Wu , Ge Wang , Lei Shang , Baigui Sun , Hao Li , Stan Z. Li