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We consider the problem of source-free unsupervised category-level pose estimation from only RGB images to a target domain without any access to source domain data or 3D annotations during adaptation. Collecting and annotating real-world 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Prakhar Kaushik , Aayush Mishra , Adam Kortylewski , Alan Yuille

This paper introduces a novel approach to leverage the generalizability of Diffusion Models for Source-Free Domain Adaptation (DM-SFDA). Our proposed DMSFDA method involves fine-tuning a pre-trained text-to-image diffusion model to generate…

Computer Vision and Pattern Recognition · Computer Science 2024-06-28 Shivang Chopra , Suraj Kothawade , Houda Aynaou , Aman Chadha

Contrastive self-supervised learning methods learn to map data points such as images into non-parametric representation space without requiring labels. While highly successful, current methods require a large amount of data in the training…

Computer Vision and Pattern Recognition · Computer Science 2022-06-23 Ali Lotfi Rezaabad , Sidharth Kumar , Sriram Vishwanath , Jonathan I. Tamir

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

Source free domain adaptation (SFDA) aims to transfer a trained source model to the unlabeled target domain without accessing the source data. However, the SFDA setting faces an effect bottleneck due to the absence of source data and target…

Machine Learning · Computer Science 2022-05-24 Fan Wang , Zhongyi Han , Zhiyan Zhang , Yilong Yin

Adapting a deep learning model to a specific target individual is a challenging facial expression recognition (FER) task that may be achieved using unsupervised domain adaptation (UDA) methods. Although several UDA methods have been…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Muhammad Osama Zeeshan , Muhammad Haseeb Aslam , Soufiane Belharbi , Alessandro Lameiras Koerich , Marco Pedersoli , Simon Bacon , Eric Granger

Domain adaptive object detection (DAOD) aims to adapt the detector from a labelled source domain to an unlabelled target domain. In recent years, DAOD has attracted massive attention since it can alleviate performance degradation due to the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-08 Siqi Zhang , Lu Zhang , Zhiyong Liu , Hangtao Feng

Generalisation of deep neural networks becomes vulnerable when distribution shifts are encountered between train (source) and test (target) domain data. Few-shot domain adaptation mitigates this issue by adapting deep neural networks…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Youssef Dawoud , Gustavo Carneiro , Vasileios Belagiannis

Domain Adaptation (DA) is a method for enhancing a model's performance on a target domain with inadequate annotated data by applying the information the model has acquired from a related source domain with sufficient labeled data. The…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Shivang Chopra , Suraj Kothawade , Houda Aynaou , Aman Chadha

Domain adaptation (DA) aims to alleviate the domain shift between source domain and target domain. Most DA methods require access to the source data, but often that is not possible (e.g. due to data privacy or intellectual property). In…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Shiqi Yang , Yaxing Wang , Joost van de Weijer , Luis Herranz , Shangling Jui

Source-free domain adaptation (SFDA) aims to adapt a model trained on labelled data in a source domain to unlabelled data in a target domain without access to the source-domain data during adaptation. Existing methods for SFDA leverage…

Machine Learning · Computer Science 2022-03-18 Cian Eastwood , Ian Mason , Christopher K. I. Williams , Bernhard Schölkopf

Most existing works on few-shot object detection (FSOD) focus on a setting where both pre-training and few-shot learning datasets are from a similar domain. However, few-shot algorithms are important in multiple domains; hence evaluation…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Kibok Lee , Hao Yang , Satyaki Chakraborty , Zhaowei Cai , Gurumurthy Swaminathan , Avinash Ravichandran , Onkar Dabeer

Weakly Supervised Object Localization (WSOL) models enable joint classification and region-of-interest localization in histology images using only image-class supervision. When deployed in a target domain, distributions shift remains a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Alexis Guichemerre , Banafsheh Karimian , Soufiane Belharbi , Natacha Gillet , Nicolas Thome , Pourya Shamsolmoali , Mohammadhadi Shateri , Luke McCaffrey , Eric Granger

Iris presentation attack detection (PAD) has achieved remarkable success to ensure the reliability and security of iris recognition systems. Most existing methods exploit discriminative features in the spatial domain and report outstanding…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Yachun Li , Ying Lian , Jingjing Wang , Yuhui Chen , Chunmao Wang , Shiliang Pu

Domain adaptation (DA) has been widely applied in the diabetic retinopathy (DR) grading of unannotated ultra-wide-field (UWF) fundus images, which can transfer annotated knowledge from labeled color fundus images. However, suffering from…

Computer Vision and Pattern Recognition · Computer Science 2023-09-20 Jinye Ran , Guanghua Zhang , Ximei Zhang , Juan Xie , Fan Xia , Hao Zhang

3D object detectors based only on LiDAR point clouds hold the state-of-the-art on modern street-view benchmarks. However, LiDAR-based detectors poorly generalize across domains due to domain shift. In the case of LiDAR, in fact, domain…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Cristiano Saltori , Stéphane Lathuiliére , Nicu Sebe , Elisa Ricci , Fabio Galasso

Source-free domain adaptation (SFDA) alleviates the domain discrepancy among data obtained from domains without accessing the data for the awareness of data privacy. However, existing conventional SFDA methods face inherent limitations in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Yaxuan Song , Jianan Fan , Dongnan Liu , Weidong Cai

Object detection is a critical field in computer vision focusing on accurately identifying and locating specific objects in images or videos. Traditional methods for object detection rely on large labeled training datasets for each object…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Vishal Chudasama , Hiran Sarkar , Pankaj Wasnik , Vineeth N Balasubramanian , Jayateja Kalla

Solving the domain shift problem during inference is essential in medical imaging, as most deep-learning based solutions suffer from it. In practice, domain shifts are tackled by performing Unsupervised Domain Adaptation (UDA), where a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Vibashan VS , Jeya Maria Jose Valanarasu , Vishal M. Patel

Applying an object detector, which is neither trained nor fine-tuned on data close to the final application, often leads to a substantial performance drop. In order to overcome this problem, it is necessary to consider a shift between…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Alexey Abramov , Christopher Bayer , Claudio Heller