UniLDiff: Unlocking the Power of Diffusion Priors for All-in-One Image Restoration

All-in-One Image Restoration (AiOIR) has emerged as a promising yet challenging research direction. To address its core challenges, we propose a novel unified image restoration framework based on latent diffusion models (LDMs). Our approach structurally integrates low-quality visual priors into the diffusion process, unlocking the powerful generative capacity of diffusion models for diverse degradations. Specifically, we design a Degradation-Aware Feature Fusion (DAFF) module to enable adaptive handling of diverse degradation types. Furthermore, to mitigate detail loss caused by the high compression and iterative sampling of LDMs, we design a Detail-Aware Expert Module (DAEM) in the decoder to enhance texture and fine-structure recovery. Extensive experiments across multi-task and mixed degradation settings demonstrate that our method consistently achieves state-of-the-art performance, highlighting the practical potential of diffusion priors for unified image restoration. Our code will be released.

NTIRE 2025 Challenge on Day and Night Raindrop Removal for Dual-Focused Images: Methods and Results

This paper reviews the NTIRE 2025 Challenge on Day and Night Raindrop Removal for Dual-Focused Images. This challenge received a wide range of impressive solutions, which are developed and evaluated using our collected real-world Raindrop Clarity dataset. Unlike existing deraining datasets, our Raindrop Clarity dataset is more diverse and challenging in degradation types and contents, which includes day raindrop-focused, day background-focused, night raindrop-focused, and night background-focused degradations. This dataset is divided into three subsets for competition: 14,139 images for training, 240 images for validation, and 731 images for testing. The primary objective of this challenge is to establish a new and powerful benchmark for the task of removing raindrops under varying lighting and focus conditions. There are a total of 361 participants in the competition, and 32 teams submitting valid solutions and fact sheets for the final testing phase. These submissions achieved state-of-the-art (SOTA) performance on the Raindrop Clarity dataset. The project can be found at https://lixinustc.github.io/CVPR-NTIRE2025-RainDrop-Competition.github.io/.