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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

Unsupervised representation learning has been extensively employed in anomaly detection, achieving impressive performance. Extracting valuable feature vectors that can remarkably improve the performance of anomaly detection are essential in…

Machine Learning · Computer Science 2022-04-26 Muhao Xu , Xueying Zhou , Xizhan Gao , WeiKai He , Sijie Niu

Unsupervised domain adaptation object detection (UDAOD) research on Detection Transformer(DETR) mainly focuses on feature alignment and existing methods can be divided into two kinds, each of which has its unresolved issues. One-stage…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Weixi Weng , Chun Yuan

Unsupervised domain adaptation aims to generalize the supervised model trained on a source domain to an unlabeled target domain. Marginal distribution alignment of feature spaces is widely used to reduce the domain discrepancy between the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Pengfei Ge , Chuan-Xian Ren , Dao-Qing Dai , Hong Yan

Object detection from Unmanned Aerial Vehicles (UAVs) is of great importance in many aerial vision-based applications. Despite the great success of generic object detection methods, a significant performance drop is observed when applied to…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Benjamin Kiefer , Martin Messmer , Andreas Zell

Multi-sensor fusion (MSF) is widely used in autonomous vehicles (AVs) for perception, particularly for 3D object detection with camera and LiDAR sensors. The purpose of fusion is to capitalize on the advantages of each modality while…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Zhiyuan Cheng , Hongjun Choi , James Liang , Shiwei Feng , Guanhong Tao , Dongfang Liu , Michael Zuzak , Xiangyu Zhang

The usage of convolutional neural networks (CNNs) for unsupervised image segmentation was investigated in this study. In the proposed approach, label prediction and network parameter learning are alternately iterated to meet the following…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Wonjik Kim , Asako Kanezaki , Masayuki Tanaka

Unsupervised domain adaptation aims to learn a model of classifier for unlabeled samples on the target domain, given training data of labeled samples on the source domain. Impressive progress is made recently by learning invariant features…

Computer Vision and Pattern Recognition · Computer Science 2019-07-04 Yabin Zhang , Hui Tang , Kui Jia , Mingkui Tan

Unmanned Aerial Vehicle (UAV) remote sensing, with its advantages of rapid information acquisition and low cost, has been widely applied in scenarios such as emergency response. However, due to the long imaging distance and complex imaging…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Kejun Ren , Xin Wu , Lianming Xu , Li Wang

Few-shot object detection, which aims at detecting novel objects rapidly from extremely few annotated examples of previously unseen classes, has attracted significant research interest in the community. Most existing approaches employ the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Limeng Qiao , Yuxuan Zhao , Zhiyuan Li , Xi Qiu , Jianan Wu , Chi Zhang

Self-supervised pre-training, based on the pretext task of instance discrimination, has fueled the recent advance in label-efficient object detection. However, existing studies focus on pre-training only a feature extractor network to learn…

Computer Vision and Pattern Recognition · Computer Science 2024-02-16 Nanqing Dong , Linus Ericsson , Yongxin Yang , Ales Leonardis , Steven McDonagh

In image classification task, feature extraction is always a big issue. Intra-class variability increases the difficulty in designing the extractors. Furthermore, hand-crafted feature extractor cannot simply adapt new situation. Recently,…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Chieh-Ning Fang , Chin-Teng Lin

Unsupervised domain adaptation is used in many machine learning applications where, during training, a model has access to unlabeled data in the target domain, and a related labeled dataset. In this paper, we introduce a novel and general…

Machine Learning · Computer Science 2021-06-23 David Acuna , Guojun Zhang , Marc T. Law , Sanja Fidler

Using the shared-private paradigm and adversarial training has significantly improved the performances of multi-domain text classification (MDTC) models. However, there are two issues for the existing methods. First, instances from the…

Computation and Language · Computer Science 2021-02-02 Yuan Wu , Diana Inkpen , Ahmed El-Roby

Object detection networks have reached an impressive performance level, yet a lack of suitable data in specific applications often limits it in practice. Typically, additional data sources are utilized to support the training task. In…

Computer Vision and Pattern Recognition · Computer Science 2022-09-01 Maximilian Menke , Thomas Wenzel , Andreas Schwung

Generally, the performance of a generic detector decreases significantly when it is tested on a specific scene due to the large variation between the source training dataset and the samples from the target scene. To solve this problem, we…

Computer Vision and Pattern Recognition · Computer Science 2017-07-14 Ala Mhalla , Thierry Chateau , Houda Maamatou , Sami Gazzah , Najoua Essoukri Ben Amara

Domain adaptive detection aims to improve the generality of a detector, learned from the labeled source domain, on the unlabeled target domain. In this work, drawing inspiration from the concept of stability from the control theory that a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Wenzhang Zhou , Heng Fan , Tiejian Luo , Libo Zhang

In order to robustly deploy object detectors across a wide range of scenarios, they should be adaptable to shifts in the input distribution without the need to constantly annotate new data. This has motivated research in Unsupervised Domain…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Farzaneh Rezaeianaran , Rakshith Shetty , Rahaf Aljundi , Daniel Olmeda Reino , Shanshan Zhang , Bernt Schiele

Object recognition is a key enabler across industry and defense. As technology changes, algorithms must keep pace with new requirements and data. New modalities and higher resolution sensors should allow for increased algorithm robustness.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Samuel Rivera , Joel Klipfel , Deborah Weeks

We present region-based, fully convolutional networks for accurate and efficient object detection. In contrast to previous region-based detectors such as Fast/Faster R-CNN that apply a costly per-region subnetwork hundreds of times, our…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Jifeng Dai , Yi Li , Kaiming He , Jian Sun