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Unsupervised learning from visual data is one of the most difficult challenges in computer vision, being a fundamental task for understanding how visual recognition works. From a practical point of view, learning from unsupervised visual…

Computer Vision and Pattern Recognition · Computer Science 2017-04-03 Ioana Croitoru , Simion-Vlad Bogolin , Marius Leordeanu

Deploying deep visual models can lead to performance drops due to the discrepancies between source and target distributions. Several approaches leverage labeled source data to estimate target domain accuracy, but accessing labeled source…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 JoonHo Lee , Jae Oh Woo , Hankyu Moon , Kwonho Lee

Both few-shot learning and domain adaptation sub-fields in Computer Vision have seen significant recent progress in terms of the availability of state-of-the-art algorithms and datasets. Frameworks have been developed for each sub-field;…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Bharadwaj Ravichandran , Alexander Lynch , Sarah Brockman , Brandon RichardWebster , Dawei Du , Anthony Hoogs , Christopher Funk

In the absence of labeled target data, unsupervised domain adaptation approaches seek to align the marginal distributions of the source and target domains in order to train a classifier for the target. Unsupervised domain alignment…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Sachin Chhabra , Hemanth Venkateswara , Baoxin Li

Domain adaptation is one of the prominent strategies for handling both domain shift, that is widely encountered in large-scale land use/land cover map calculation, and the scarcity of pixel-level ground truth that is crucial for supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Sarmad F. Ismael , Koray Kayabol , Erchan Aptoula

Unsupervised Domain Adaptation (UDA) for object detection aims to adapt a model trained on a source domain to detect instances from a new target domain for which annotations are not available. Different from traditional approaches, we…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Giulio Mattolin , Luca Zanella , Elisa Ricci , Yiming Wang

Existing deep learning-based change detection methods try to elaborately design complicated neural networks with powerful feature representations, but ignore the universal domain shift induced by time-varying land cover changes, including…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Jia Liu , Wenjie Xuan , Yuhang Gan , Juhua Liu , Bo Du

With the development of computational intelligence algorithms, unsupervised monocular depth and pose estimation framework, which is driven by warped photometric consistency, has shown great performance in the daytime scenario. While in some…

Computer Vision and Pattern Recognition · Computer Science 2022-06-10 Chaoqiang Zhao , Yang Tang , Qiyu Sun

Deep learning has been widely adopted for WiFi CSI-based human activity recognition (HAR) due to its ability to learn spatio-temporal features in a privacy-preserving and cost-effective manner. However, DL-based models generalize poorly…

Signal Processing · Electrical Eng. & Systems 2026-05-22 Ahmed Y. Radwan , Hina Tabassum

The ability to categorize is a cornerstone of visual intelligence, and a key functionality for artificial, autonomous visual machines. This problem will never be solved without algorithms able to adapt and generalize across visual domains.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-14 Massimiliano Mancini , Samuel Rota Bulò , Barbara Caputo , Elisa Ricci

Unsupervised near-duplicate detection has many practical applications ranging from social media analysis and web-scale retrieval, to digital image forensics. It entails running a threshold-limited query on a set of descriptors extracted…

Computer Vision and Pattern Recognition · Computer Science 2019-10-29 Lia Morra , Fabrizio Lamberti

Unsupervised image-to-image translation is a class of computer vision problems which aims at modeling conditional distribution of images in the target domain, given a set of unpaired images in the source and target domains. An image in the…

Computer Vision and Pattern Recognition · Computer Science 2018-11-30 Hadi Kazemi , Sobhan Soleymani , Fariborz Taherkhani , Seyed Mehdi Iranmanesh , Nasser M. Nasrabadi

Deep learning-solutions for hand-object 3D pose and shape estimation are now very effective when an annotated dataset is available to train them to handle the scenarios and lighting conditions they will encounter at test time.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Mengshi Qi , Edoardo Remelli , Mathieu Salzmann , Pascal Fua

Under the domain shift, cross-domain few-shot object detection aims to adapt object detectors in the target domain with a few annotated target data. There exists two significant challenges: (1) Highly insufficient target domain data; (2)…

Computer Vision and Pattern Recognition · Computer Science 2022-09-23 Yipeng Gao , Lingxiao Yang , Yunmu Huang , Song Xie , Shiyong Li , Wei-shi Zheng

The ability to classify images is dependent on having access to large labeled datasets and testing on data from the same domain that the model can train on. Classification becomes more challenging when dealing with new data from a different…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Firas Al-Hindawi , Md Mahfuzur Rahman Siddiquee , Teresa Wu , Han Hu , Ying Sun

Unsupervised domain adaptation (UDA) focuses on transferring knowledge learned in the labeled source domain to the unlabeled target domain. Despite significant progress that has been achieved in single-target domain adaptation for image…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Xiaohu Lu , Hayder Radha

This report contributes to the field of unsupervised domain adaptation by providing an analysis of existing methods, introducing a new approach, and demonstrating the potential for improving visual recognition tasks across different…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Artem Bituitskii

Conventional unsupervised domain adaptation (UDA) assumes that training data are sampled from a single domain. This neglects the more practical scenario where training data are collected from multiple sources, requiring multi-source domain…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Xingchao Peng , Qinxun Bai , Xide Xia , Zijun Huang , Kate Saenko , Bo Wang

Existing methods for unsupervised domain adaptation often rely on minimizing some statistical distance between the source and target samples in the latent space. To avoid the sampling variability, class imbalance, and data-privacy concerns…

Machine Learning · Computer Science 2021-10-26 Korawat Tanwisuth , Xinjie Fan , Huangjie Zheng , Shujian Zhang , Hao Zhang , Bo Chen , Mingyuan Zhou

Unsupervised object discovery aims to localize objects in images, while removing the dependence on annotations required by most deep learning-based methods. To address this problem, we propose a fully unsupervised, bottom-up approach, for…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Sandra Kara , Hejer Ammar , Florian Chabot , Quoc-Cuong Pham