NTIRE 2025 the 2nd Restore Any Image Model (RAIM) in the Wild Challenge

Jie Liang; Radu Timofte; Qiaosi Yi; Zhengqiang Zhang; Shuaizheng Liu; Lingchen Sun; Rongyuan Wu; Xindong Zhang; Hui Zeng; Lei Zhang

arXiv · 2506.01394

NTIRE 2025 the 2nd Restore Any Image Model (RAIM) in the Wild Challenge

Jie Liang·Radu Timofte·Qiaosi Yi·Zhengqiang Zhang·Shuaizheng Liu·Lingchen Sun·Rongyuan Wu·Xindong Zhang·Hui Zeng·Lei Zhang

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Abstract

In this paper, we present a comprehensive overview of the NTIRE 2025 challenge on the 2nd Restore Any Image Model (RAIM) in the Wild. This challenge established a new benchmark for real-world image restoration, featuring diverse scenarios with and without reference ground truth. Participants were tasked with restoring real-captured images suffering from complex and unknown degradations, where both perceptual quality and fidelity were critically evaluated. The challenge comprised two tracks: (1) the low-light joint denoising and demosaicing (JDD) task, and (2) the image detail enhancement/generation task. Each track included two sub-tasks. The first sub-task involved paired data with available ground truth, enabling quantitative evaluation. The second sub-task dealt with real-world yet unpaired images, emphasizing restoration efficiency and subjective quality assessed through a comprehensive user study. In total, the challenge attracted nearly 300 registrations, with 51 teams submitting more than 600 results. The top-performing methods advanced the state of the art in image restoration and received unanimous recognition from all 20+ expert judges. The datasets used in Track 1 and Track 2 are available at https://drive.google.com/drive/folders/1Mgqve-yNcE26IIieI8lMIf-25VvZRs_J and https://drive.google.com/drive/folders/1UB7nnzLwqDZOwDmD9aT8J0KVg2ag4Qae, respectively. The official challenge pages for Track 1 and Track 2 can be found at https://codalab.lisn.upsaclay.fr/competitions/21334#learn_the_details and https://codalab.lisn.upsaclay.fr/competitions/21623#learn_the_details.

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Jie Liang, Radu Timofte, Qiaosi Yi, Zhengqiang Zhang, Shuaizheng Liu, Lingchen Sun, Rongyuan Wu, Xindong Zhang, Hui Zeng, Lei Zhang. 2025-06-02. NTIRE 2025 the 2nd Restore Any Image Model (RAIM) in the Wild Challenge. https://arxiv.org/abs/2506.01394

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