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In the Fourier domain, luminance information is primarily encoded in the amplitude spectrum, while spatial structures are captured in the phase components. The traditional Fourier Frequency information fitting employs pixel-wise loss…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Yan Xingyang , Huang Xiaohong , Zhang Zhao , You Tian , Xu Ziheng

Domain generalization in fundus imaging is challenging due to variations in acquisition conditions across devices and clinical settings. The inability to adapt to these variations causes performance degradation on unseen domains for deep…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Shramana Dey , Varun Ajith , Abhirup Banerjee , Sushmita Mitra

To boost a detector for single-frame 3D object detection, we present a new approach to train it to simulate features and responses following a detector trained on multi-frame point clouds. Our approach needs multi-frame point clouds only…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Wu Zheng , Li Jiang , Fanbin Lu , Yangyang Ye , Chi-Wing Fu

Out-of-Distribution (OOD) detection under long-tailed distributions is a highly challenging task because the scarcity of samples in tail classes leads to blurred decision boundaries in the feature space. Current state-of-the-art (sota)…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Ningkang Peng , Qianfeng Yu , Yuhao Zhang , Yafei Liu , Xiaoqian Peng , Peirong Ma , Yi Chen , Peiheng Li , Yanhui Gu

We introduce a novel, geometry-aware distance metric for the family of von Mises-Fisher (vMF) distributions, which are fundamental models for directional data on the unit hypersphere. Although the vMF distribution is widely employed in a…

Machine Learning · Statistics 2025-04-22 Kisung You , Dennis Shung , Mauro Giuffrè

A number of pattern recognition tasks, \textit{e.g.}, face verification, can be boiled down to classification or clustering of unit length directional feature vectors whose distance can be simply computed by their angle. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-01-03 Md. Abul Hasnat , Julien Bohné , Jonathan Milgram , Stéphane Gentric , Liming Chen

Domain generalization (DG) for object detection aims to enhance detectors' performance in unseen scenarios. This task remains challenging due to complex variations in real-world applications. Recently, diffusion models have demonstrated…

Computer Vision and Pattern Recognition · Computer Science 2025-06-05 Boyong He , Yuxiang Ji , Qianwen Ye , Zhuoyue Tan , Liaoni Wu

Unsupervised domain adaptation is critical in various computer vision tasks, such as object detection, instance segmentation, etc. They attempt to reduce domain bias-induced performance degradation while also promoting model application…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Lijun Gou , Jinrong Yang , Hangcheng Yu , Pan Wang , Xiaoping Li , Chao Deng

Domain-generalized LiDAR semantic segmentation (LSS) seeks to train models on source-domain point clouds that generalize reliably to multiple unseen target domains, which is essential for real-world LiDAR applications. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Jindong Zhao , Yuan Gao , Yang Xia , Sheng Nie , Jun Yue , Weiwei Sun , Shaobo Xia

Domain Generalized Semantic Segmentation (DGSS) aims to improve the generalization ability of models across unseen domains without access to target data during training. Recent advances in DGSS have increasingly exploited vision foundation…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Xinhui Li , Xiaojie Guo

Single-domain generalization for object detection (S-DGOD) seeks to transfer learned representations from a single source domain to unseen target domains. While recent approaches have primarily focused on achieving feature invariance, they…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Zhenwei He , Hongsu Ni

Existing domain adaptation (DA) and generalization (DG) methods in object detection enforce feature alignment in the visual space but face challenges like object appearance variability and scene complexity, which make it difficult to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Sina Malakouti , Adriana Kovashka

In the realm of LiDAR-based perception, significant strides have been made, yet domain generalization remains a substantial challenge. The performance often deteriorates when models are applied to unfamiliar datasets with different LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Jaeyeul Kim , Jungwan Woo , Jeonghoon Kim , Sunghoon Im

Federated Learning (FL) offers a powerful strategy for training machine learning models across decentralized datasets while maintaining data privacy, yet domain shifts among clients can degrade performance, particularly in medical imaging…

Image and Video Processing · Electrical Eng. & Systems 2024-12-31 Hongyi Pan , Debesh Jha , Koushik Biswas , Ulas Bagci

Domain generalization (DG) aims to generalize a model trained on multiple source (i.e., training) domains to a distributionally different target (i.e., test) domain. In contrast to the conventional DG that strictly requires the availability…

Computer Vision and Pattern Recognition · Computer Science 2023-03-23 Zijian Wang , Yadan Luo , Ruihong Qiu , Zi Huang , Mahsa Baktashmotlagh

In open-world scenarios, where both novel classes and domains may exist, an ideal segmentation model should detect anomaly classes for safety and generalize to new domains. However, existing methods often struggle to distinguish between…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Zhitong Gao , Bingnan Li , Mathieu Salzmann , Xuming He

Advanced visual localization techniques encompass image retrieval challenges and 6 Degree-of-Freedom (DoF) camera pose estimation, such as hierarchical localization. Thus, they must extract global and local features from input images.…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Wenzheng Song , Ran Yan , Boshu Lei , Takayuki Okatani

Indexing time series by creating compact binary representations is a fundamental task in time series data mining. Recently, deep learning-based hashing methods have proven effective for indexing time series based on semantic meaning rather…

Machine Learning · Computer Science 2025-09-25 Juan Manuel Perez , Kevin Garcia , Brooklyn Berry , Dongjin Song , Yifeng Gao

In autonomous driving, 3D object detection is essential for accurately identifying and tracking objects. Despite the continuous development of various technologies for this task, a significant drawback is observed in most of them-they…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Hsin-Cheng Lu , Chung-Yi Lin , Winston H. Hsu

Deep models trained on a single source domain often fail catastrophically under distribution shifts, a critical challenge in Single Domain Generalization (SDG). While existing methods focus on augmenting source data or learning invariant…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Marzi Heidari , Yuhong Guo