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We propose a unified diffusion model-based correction and super-resolution method to enhance the fidelity and resolution of diverse low-quality data through a two-step pipeline. First, the correction step employs a novel enhanced stochastic…

数值分析 · 数学 2025-05-15 Wuzhe Xu , Yulong Lu , Sifan Wang , Tong-Rui Liu

While deep neural networks (NN) significantly advance image compressed sensing (CS) by improving reconstruction quality, the necessity of training current CS NNs from scratch constrains their effectiveness and hampers rapid deployment.…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Bin Chen , Zhenyu Zhang , Weiqi Li , Chen Zhao , Jiwen Yu , Shijie Zhao , Jie Chen , Jian Zhang

Image restoration aims to recover high-quality images from degraded observations. When the degradation process is known, the recovery problem can be formulated as an inverse problem, and in a Bayesian context, the goal is to sample a clean…

图像与视频处理 · 电气工程与系统科学 2025-10-13 Darshan Thaker , Abhishek Goyal , René Vidal

Diffusion models have emerged as powerful generative techniques for solving inverse problems. Despite their success in a variety of inverse problems in imaging, these models require many steps to converge, leading to slow inference time.…

图像与视频处理 · 电气工程与系统科学 2024-11-13 Yaşar Utku Alçalar , Mehmet Akçakaya

Deep learning (DL) methods have been extensively applied to various image recovery problems, including magnetic resonance imaging (MRI) and computed tomography (CT) reconstruction. Beyond supervised models, other approaches have been…

图像与视频处理 · 电气工程与系统科学 2024-12-24 Shijun Liang , Ismail Alkhouri , Qing Qu , Rongrong Wang , Saiprasad Ravishankar

Fractional diffusion equations have been an effective tool for modeling anomalous diffusion in complicated systems. However, traditional numerical methods require expensive computation cost and storage resources because of the memory effect…

数值分析 · 数学 2022-11-23 Xiong-bin Yan , Zhi-Qin John Xu , Zheng Ma

Portrait customization (PC) has recently garnered significant attention due to its potential applications. However, existing PC methods lack precise identity (ID) preservation and face control. To address these tissues, we propose Diff-PC,…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Yifang Xu , Benxiang Zhai , Chenyu Zhang , Ming Li , Yang Li , Sidan Du

Recent studies on inverse problems have proposed posterior samplers that leverage the pre-trained diffusion models as powerful priors. These attempts have paved the way for using diffusion models in a wide range of inverse problems.…

计算机视觉与模式识别 · 计算机科学 2024-07-24 Sojin Lee , Dogyun Park , Inho Kong , Hyunwoo J. Kim

Diffusion Transformer (DiT) faces challenges when generating images with higher resolution compared at training resolution, causing especially structural degradation due to attention dilution. Previous approaches attempt to mitigate this by…

计算机视觉与模式识别 · 计算机科学 2026-03-11 Yihua Liu , Fanjiang Ye , Bowen Lin , Rongyu Fang , Chengming Zhang

For image inpainting, the existing Denoising Diffusion Probabilistic Model (DDPM) based method i.e. RePaint can produce high-quality images for any inpainting form. It utilizes a pre-trained DDPM as a prior and generates inpainting results…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Lintao Zhang , Xiangcheng Du , LeoWu TomyEnrique , Yiqun Wang , Yingbin Zheng , Cheng Jin

Unpaired image-to-image translation has seen significant progress since the introduction of CycleGAN. However, methods based on diffusion models or Schr\"odinger bridges have yet to be widely adopted in real-world applications due to their…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Suhyeon Lee , Kwanyoung Kim , Jong Chul Ye

Diffusion Models (DMs) have demonstrated state-of-the-art performance in content generation without requiring adversarial training. These models are trained using a two-step process. First, a forward - diffusion - process gradually adds…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Anwaar Ulhaq , Naveed Akhtar

Despite the remarkable success, recent reconstruction-based anomaly detection (AD) methods via diffusion modeling still involve fine-grained noise-strength tuning and computationally expensive multi-step denoising, leading to a fundamental…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Shunsuke Sakai , Xiangteng He , Chunzhi Gu , Leonid Sigal , Tatsuhito Hasegawa

When using a diffusion model for image editing, there are times when the modified image can differ greatly from the source. To address this, we apply a dual-guidance approach to maintain high fidelity to the original in areas that are not…

计算机视觉与模式识别 · 计算机科学 2023-12-13 Ruichen Zhang

Recent advancements in image motion deblurring, driven by CNNs and transformers, have made significant progress. Large-scale pre-trained diffusion models, which are rich in real-world modeling, have shown great promise for high-quality…

计算机视觉与模式识别 · 计算机科学 2026-05-07 Xiaoyang Liu , Zhengyan Zhou , Zihang Xu , Jiezhang Cao , Zheng Chen , Yulun Zhang

Text-driven diffusion models have significantly advanced the image editing performance by using text prompts as inputs. One crucial step in text-driven image editing is to invert the original image into a latent noise code conditioned on…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Ruibin Li , Ruihuang Li , Song Guo , Lei Zhang

While diffusion priors generate high-quality posterior samples across many inverse problems, they are often trained on limited training sets or purely simulated data, thus inheriting the errors and biases of these underlying sources.…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Frederic Wang , Katherine L. Bouman

Text-guided diffusion models have become a popular tool in image synthesis, known for producing high-quality and diverse images. However, their application to editing real images often encounters hurdles primarily due to the text condition…

计算机视觉与模式识别 · 计算机科学 2024-02-08 Hansam Cho , Jonghyun Lee , Seoung Bum Kim , Tae-Hyun Oh , Yonghyun Jeong

Diffusion models have recently shown promise in time series forecasting, particularly for probabilistic predictions. However, they often fail to achieve state-of-the-art point estimation performance compared to regression-based methods.…

人工智能 · 计算机科学 2025-11-25 Hang Ding , Xue Wang , Tian Zhou , Tao Yao

Diffusion models have achieved impressive performance on multi-focus image fusion (MFIF). However, a key challenge in applying diffusion models to the ill-posed MFIF problem is that defocus blur can make common symmetric geometric…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Bo Li , Tingting Bao , Lingling Zhang , Weiping Fu , Yaxian Wang , Jun Liu