The Second Challenge on Cross-Domain Few-Shot Object Detection at NTIRE 2026: Methods and Results
Abstract
Cross-domain few-shot object detection (CD-FSOD) remains a challenging problem for existing object detectors and few-shot learning approaches, particularly when generalizing across distinct domains. As part of NTIRE 2026, we hosted the second CD-FSOD Challenge to systematically evaluate and promote progress in detecting objects in unseen target domains under limited annotation conditions. The challenge received strong community interest, with 128 registered participants and a total of 696 submissions. Among them, 31 teams actively participated, and 19 teams submitted valid final results. Participants explored a wide range of strategies, introducing innovative methods that push the performance frontier under both open-source and closed-source tracks. This report presents a detailed overview of the NTIRE 2026 CD-FSOD Challenge, including a summary of the submitted approaches and an analysis of the final results across all participating teams. Challenge Codes: https://github.com/ohMargin/NTIRE2026_CDFSOD.
Keywords
Cite
@article{arxiv.2604.11998,
title = {The Second Challenge on Cross-Domain Few-Shot Object Detection at NTIRE 2026: Methods and Results},
author = {Xingyu Qiu and Yuqian Fu and Jiawei Geng and Bin Ren and Jiancheng Pan and Zongwei Wu and Hao Tang and Yanwei Fu and Radu Timofte and Nicu Sebe and Mohamed Elhoseiny and Lingyi Hong and Mingxi Cheng and Xingqi He and Runze Li and Xingdong Sheng and Wenqiang Zhang and Jiacong Liu and Shu Luo and Yikai Qin and Yaze Zhao and Yongwei Jiang and Yixiong Zou and Zhe Zhang and Yang Yang and Kaiyu Li and Bowen Fu and Zixuan Jiang and Ke Li and Hui Qiao and Xiangyong Cao and Xuanlong Yu and Youyang Sha and Longfei Liu and Di Yang and Xi Shen and Kyeongryeol Go and Taewoong Jang and Saiprasad Meesiyawar and Ravi Kirasur and Rakshita Kulkarni and Bhoomi Deshpande and Harsh Patil and Uma Mudenagudi and Shuming Hu and Chao Chen and Tao Wang and Wei Zhou and Qi Xu and Zhenzhao Xing and Dandan Zhao and Hanzhe Xia and Dongdong Lu and Zhe Zhang and Jingru Wang and Guangwei Huang and Jiachen Tu and Yaokun Shi and Guoyi Xu and Yaoxin Jiang and Jiajia Liu and Liwei Zhou and Bei Dou and Tao Wu and Zekang Fan and Junjie Liu and Adhémar de Senneville and Flavien Armangeon and Mengbers and Yazhe Lyu and Zhimeng Xin and Zijian Zhuang and Hongchun Zhu and Li Wang},
journal= {arXiv preprint arXiv:2604.11998},
year = {2026}
}
Comments
accepted by CVPRW 26 @ NTIRE