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We present DiffBIR, a general restoration pipeline that could handle different blind image restoration tasks in a unified framework. DiffBIR decouples blind image restoration problem into two stages: 1) degradation removal: removing…

Computer Vision and Pattern Recognition · Computer Science 2024-04-15 Xinqi Lin , Jingwen He , Ziyan Chen , Zhaoyang Lyu , Bo Dai , Fanghua Yu , Wanli Ouyang , Yu Qiao , Chao Dong

Low-light image enhancement (LLIE) techniques attempt to increase the visibility of images captured in low-light scenarios. However, as a result of enhancement, a variety of image degradations such as noise and color bias are revealed.…

Image and Video Processing · Electrical Eng. & Systems 2024-09-10 Savvas Panagiotou , Anna S. Bosman

Snapshot compressive spectral imaging reconstruction aims to reconstruct three-dimensional spatial-spectral images from a single-shot two-dimensional compressed measurement. Existing state-of-the-art methods are mostly based on deep…

Image and Video Processing · Electrical Eng. & Systems 2024-08-27 Zongliang Wu , Ruiying Lu , Ying Fu , Xin Yuan

Deep unfolding networks (DUNs) combine the interpretability of model-based methods with the learning ability of deep networks, yet remain limited for blind image restoration (BIR). Existing DUNs suffer from: (1) \textbf{Degradation-specific…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Chunming He , Rihan Zhang , Zheng Chen , Bowen Yang , Chengyu Fang , Yunlong Lin , Yulun Zhang , Fengyang Xiao , Sina Farsiu

Manipulating transparent objects presents significant challenges due to the complexities introduced by their reflection and refraction properties, which considerably hinder the accurate estimation of their 3D shapes. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Haoxiao Wang , Kaichen Zhou , Binrui Gu , Zhiyuan Feng , Weijie Wang , Peilin Sun , Yicheng Xiao , Jianhua Zhang , Hao Dong

Discrete diffusion models have emerged as a promising direction for vision-language tasks, offering bidirectional context modeling and theoretical parallelization. However, their practical application is severely hindered by a…

Computation and Language · Computer Science 2025-10-24 Yatai Ji , Teng Wang , Yuying Ge , Zhiheng Liu , Sidi Yang , Ying Shan , Ping Luo

Low-light image enhancement (LLIE) has achieved promising performance by employing conditional diffusion models. Despite the success of some conditional methods, previous methods may neglect the importance of a sufficient formulation of…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yuhui Wu , Guoqing Wang , Zhiwen Wang , Yang Yang , Tianyu Li , Malu Zhang , Chongyi Li , Heng Tao Shen

Image restoration aims to reconstruct the latent clear images from their degraded versions. Despite the notable achievement, existing methods predominantly focus on handling specific degradation types and thus require specialized models,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Xuanhua He , Lang Li , Yingying Wang , Hui Zheng , Ke Cao , Keyu Yan , Rui Li , Chengjun Xie , Jie Zhang , Man Zhou

The Retinex theory models the image as a product of illumination and reflection components, which has received extensive attention and is widely used in image enhancement, segmentation and color restoration. However, it has been rarely used…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Liang Wu , Wenjing Lu , Liming Tang , Zhuang Fang

Images captured in poorly lit conditions are often corrupted by acquisition noise. Leveraging recent advances in graph-based regularization, we propose a fast Retinex-based restoration scheme that denoises and contrast-enhances an image.…

Image and Video Processing · Electrical Eng. & Systems 2023-07-26 Yeganeh Gharedaghi , Gene Cheung , Xianming Liu

Image restoration (IR) has been an indispensable and challenging task in the low-level vision field, which strives to improve the subjective quality of images distorted by various forms of degradation. Recently, the diffusion model has…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Xin Li , Yulin Ren , Xin Jin , Cuiling Lan , Xingrui Wang , Wenjun Zeng , Xinchao Wang , Zhibo Chen

Deep learning has shown great potential in accelerating diffusion tensor imaging (DTI). Nevertheless, existing methods tend to suffer from Rician noise and eddy current, leading to detail loss in reconstructing the DTI-derived parametric…

Image and Video Processing · Electrical Eng. & Systems 2024-08-21 Wenxin Fan , Jian Cheng , Cheng Li , Jing Yang , Ruoyou Wu , Juan Zou , Shanshan Wang

We present AutoDIR, an innovative all-in-one image restoration system incorporating latent diffusion. AutoDIR excels in its ability to automatically identify and restore images suffering from a range of unknown degradations. AutoDIR offers…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Yitong Jiang , Zhaoyang Zhang , Tianfan Xue , Jinwei Gu

Retinex model has been applied to low-light image enhancement in many existing methods. More appropriate decomposition of a low-light image can help achieve better image enhancement. In this paper, we propose a new pixel-level non-local…

Image and Video Processing · Electrical Eng. & Systems 2021-06-16 Hao Hou , Yingkun Hou , Yuxuan Shi , Benzheng Wei , Jun Xu

This paper presents a novel Two-Stage Diffusion Model (TS-Diff) for enhancing extremely low-light RAW images. In the pre-training stage, TS-Diff synthesizes noisy images by constructing multiple virtual cameras based on a noise space.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Yi Li , Zhiyuan Zhang , Jiangnan Xia , Jianghan Cheng , Qilong Wu , Junwei Li , Yibin Tian , Hui Kong

Recently, research on denoising diffusion models has expanded its application to the field of image restoration. Traditional diffusion-based image restoration methods utilize degraded images as conditional input to effectively guide the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Zhenning Shi , Haoshuai Zheng , Chen Xu , Changsheng Dong , Bin Pan , Xueshuo Xie , Along He , Tao Li , Huazhu Fu

While latent diffusion models (LDMs), such as Stable Diffusion, are designed for high-resolution (HR) image generation, they often struggle with significant structural distortions when generating images at resolutions higher than their…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Boyuan Cao , Jiaxin Ye , Yujie Wei , Hongming Shan

Diffusion-based extreme image compression methods have achieved impressive performance at extremely low bitrates. However, constrained by the iterative denoising process that starts from pure noise, these methods are limited in both…

Image and Video Processing · Electrical Eng. & Systems 2025-05-27 Zhiyuan Li , Yanhui Zhou , Hao Wei , Chenyang Ge , Ajmal Mian

Hyperspectral image (HSI) reconstruction aims to recover 3D HSI from its degraded 2D measurements. Recently great progress has been made in deep learning-based methods, however, these methods often struggle to accurately capture…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Mingyang Yu , Zhijian Wu , Dingjiang Huang

We propose RelitLRM, a Large Reconstruction Model (LRM) for generating high-quality Gaussian splatting representations of 3D objects under novel illuminations from sparse (4-8) posed images captured under unknown static lighting. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Tianyuan Zhang , Zhengfei Kuang , Haian Jin , Zexiang Xu , Sai Bi , Hao Tan , He Zhang , Yiwei Hu , Milos Hasan , William T. Freeman , Kai Zhang , Fujun Luan