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Accurate segmentation of retinal fluids in 3D Optical Coherence Tomography images is key for diagnosis and personalized treatment of eye diseases. While deep learning has been successful at this task, trained supervised models often fail…

Computer Vision and Pattern Recognition · Computer Science 2022-08-05 Alvaro Gomariz , Huanxiang Lu , Yun Yvonna Li , Thomas Albrecht , Andreas Maunz , Fethallah Benmansour , Alessandra M. Valcarcel , Jennifer Luu , Daniela Ferrara , Orcun Goksel

Unsupervised domain adaptation (UDA) aims to transfer knowledge learned from a fully-labeled source domain to a different unlabeled target domain. Most existing UDA methods learn domain-invariant feature representations by minimizing…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Rui Wang , Zuxuan Wu , Zejia Weng , Jingjing Chen , Guo-Jun Qi , Yu-Gang Jiang

Camera and LiDAR serve as informative sensors for accurate and robust autonomous driving systems. However, these sensors often exhibit heterogeneous natures, resulting in distributional modality gaps that present significant challenges for…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Yiran Yang , Xu Gao , Tong Wang , Xin Hao , Yifeng Shi , Xiao Tan , Xiaoqing Ye , Jingdong Wang

3D object detection is crucial for applications like autonomous driving and robotics. However, in real-world environments, variations in sensor data distribution due to sensor upgrades, weather changes, and geographic differences can…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Yecheol Kim , Junho Lee , Changsoo Park , Hyoung won Kim , Inho Lim , Christopher Chang , Jun Won Choi

In this paper, we propose LiOn-XA, an unsupervised domain adaptation (UDA) approach that combines LiDAR-Only Cross-Modal (X) learning with Adversarial training for 3D LiDAR point cloud semantic segmentation to bridge the domain gap arising…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Thomas Kreutz , Jens Lemke , Max Mühlhäuser , Alejandro Sanchez Guinea

Unsupervised domain adaptation aims to transfer knowledge from a source domain to a target domain so that the target domain data can be recognized without any explicit labelling information for this domain. One limitation of the problem…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Qian Wang , Penghui Bu , Toby P. Breckon

3D object detection networks tend to be biased towards the data they are trained on. Evaluation on datasets captured in different locations, conditions or sensors than that of the training (source) data results in a drop in model…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Deepti Hegde , Vishal M. Patel

LiDAR semantic segmentation provides 3D semantic information about the environment, an essential cue for intelligent systems during their decision making processes. Deep neural networks are achieving state-of-the-art results on large public…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Inigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

Recently, anatomical landmark detection has achieved great progresses on single-domain data, which usually assumes training and test sets are from the same domain. However, such an assumption is not always true in practice, which can cause…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Haibo Jin , Haoxuan Che , Hao Chen

Recent vision-language models (VLMs) such as CLIP demonstrate impressive cross-modal reasoning, extending beyond images to 3D perception. Yet, these models remain fragile under domain shifts, especially when adapting from synthetic to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Mainak Singha , Sarthak Mehrotra , Paolo Casari , Subhasis Chaudhuri , Elisa Ricci , Biplab Banerjee

Unsupervised Domain Adaptation (UDA) technique has been explored in 3D cross-domain tasks recently. Though preliminary progress has been made, the performance gap between the UDA-based 3D model and the supervised one trained with fully…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Jiakang Yuan , Bo Zhang , Xiangchao Yan , Tao Chen , Botian Shi , Yikang Li , Yu Qiao

Sampling discrepancies between different manufacturers and models of lidar sensors result in inconsistent representations of objects. This leads to performance degradation when 3D detectors trained for one lidar are tested on other types of…

Computer Vision and Pattern Recognition · Computer Science 2023-04-12 Darren Tsai , Julie Stephany Berrio , Mao Shan , Stewart Worrall , Eduardo Nebot

The unsupervised 3D object detection is to accurately detect objects in unstructured environments with no explicit supervisory signals. This task, given sparse LiDAR point clouds, often results in compromised performance for detecting…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Ruiyang Zhang , Hu Zhang , Hang Yu , Zhedong Zheng

Supervised learning with large scale labeled datasets and deep layered models has made a paradigm shift in diverse areas in learning and recognition. However, this approach still suffers generalization issues under the presence of a domain…

Machine Learning · Statistics 2016-03-28 Ozan Sener , Hyun Oh Song , Ashutosh Saxena , Silvio Savarese

Achieving top-notch performance in Intelligent Transportation detection is a critical research area. However, many challenges still need to be addressed when it comes to detecting in a cross-domain scenario. In this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Tong Xiang , Hongxia Zhao , Fenghua Zhu , Yuanyuan Chen , Yisheng Lv

LiDAR-based 3D object detectors have been largely utilized in various applications, including autonomous vehicles or mobile robots. However, LiDAR-based detectors often fail to adapt well to target domains with different sensor…

Computer Vision and Pattern Recognition · Computer Science 2024-10-03 Jiyun Jang , Mincheol Chang , Jongwon Park , Jinkyu Kim

We consider the problem of domain adaptation in LiDAR-based 3D object detection. Towards this, we propose a simple yet effective training strategy called Gradual Batch Alternation that can adapt from a large labeled source domain to an…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Mrigank Rochan , Xingxin Chen , Alaap Grandhi , Eduardo R. Corral-Soto , Bingbing Liu

In this paper, we propose a simple model referred as Contradistinguisher (CTDR) for unsupervised domain adaptation whose objective is to jointly learn to contradistinguish on unlabeled target domain in a fully unsupervised manner along with…

Machine Learning · Computer Science 2020-06-12 Sourabh Balgi , Ambedkar Dukkipati

With the advancement of autonomous driving, numerous annotated multi-modality datasets have become available. This presents an opportunity to develop domain-adaptive 3D object detectors for new environments without relying on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Xiaohu Lu , Hamed Khatounabadi , Hayder Radha

Despite domain-adaptive object detectors based on CNN and transformers have made significant progress in cross-domain detection tasks, it is regrettable that domain adaptation for real-time transformer-based detectors has not yet been…

Computer Vision and Pattern Recognition · Computer Science 2025-10-27 Feng Lv , Guoqing Li , Jin Li , Chunlong Xia