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The performance of single image super-resolution depends heavily on how to generate and complement high-frequency details to low-resolution images. Recently, diffusion-based DDPM models exhibit great potential in generating high-quality…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Xingjian Wang , Li Chai , Jiming Chen

The computer vision community has developed numerous techniques for digitally restoring true scene information from single-view degraded photographs, an important yet extremely ill-posed task. In this work, we tackle image restoration from…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Yucheng Mao , Boyang Wang , Nilesh Kulkarni , Jeong Joon Park

Ancient artifacts are an important medium for cultural preservation and restoration. However, many physical copies of artifacts are either damaged or lost, leaving a blank space in archaeological and historical studies that calls for…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Shengguang Wu , Zhenglun Chen , Qi Su

Denoising diffusion models produce high-fidelity image samples by capturing the image distribution in a progressive manner while initializing with a simple distribution and compounding the distribution complexity. Although these models have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Ayantika Das , Moitreya Chaudhuri , Koushik Bhat , Keerthi Ram , Mihail Bota , Mohanasankar Sivaprakasam

Depth information provides valuable insights into the 3D structure especially the outline of objects, which can be utilized to improve the semantic segmentation tasks. However, a naive fusion of depth information can disrupt feature and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Wei Sun , Yuan Li , Qixiang Ye , Jianbin Jiao , Yanzhao Zhou

In this work, we utilize the high-fidelity generation abilities of diffusion models to solve blind JPEG restoration at high compression levels. We propose an elegant modification of the forward stochastic differential equation of diffusion…

Image and Video Processing · Electrical Eng. & Systems 2024-05-08 Simon Welker , Henry N. Chapman , Timo Gerkmann

Existing methods for restoring degraded human-centric images often struggle with insufficient fidelity, particularly in human body restoration (HBR). Recent diffusion-based restoration methods commonly adapt pre-trained text-to-image…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Jue Gong , Zihan Zhou , Jingkai Wang , Shu Li , Libo Liu , Jianliang Lan , Yulun Zhang

Although there have been significant advancements in image compression techniques, such as standard and learned codecs, these methods still suffer from severe quality degradation at extremely low bits per pixel. While recent diffusion-based…

Image and Video Processing · Electrical Eng. & Systems 2025-09-23 Chanung Park , Joo Chan Lee , Jong Hwan Ko

In recent years, deep learning-based image compression, particularly through generative models, has emerged as a pivotal area of research. Despite significant advancements, challenges such as diminished sharpness and quality in…

Image and Video Processing · Electrical Eng. & Systems 2024-09-18 Ryugo Morita , Hitoshi Nishimura , Ko Watanabe , Andreas Dengel , Jinjia Zhou

Preserving cultural heritage is of paramount importance. In the domain of art restoration, developing a computer vision model capable of effectively restoring deteriorated images of art pieces was difficult, but now we have a good computer…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Sandeep Nagar , Abhinaba Bala , Sai Amrit Patnaik

Text-driven diffusion models have become increasingly popular for various image editing tasks, including inpainting, stylization, and object replacement. However, it still remains an open research problem to adopt this language-vision…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Chenyang Qi , Zhengzhong Tu , Keren Ye , Mauricio Delbracio , Peyman Milanfar , Qifeng Chen , Hossein Talebi

The scarcity of annotated surgical data poses a significant challenge for developing deep learning systems in computer-assisted interventions. While diffusion models can synthesize realistic images, they often suffer from data memorization,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Danush Kumar Venkatesh , Stefanie Speidel

Images captured in challenging environments--such as nighttime, smoke, rainy weather, and underwater--often suffer from significant degradation, resulting in a substantial loss of visual quality. The effective restoration of these degraded…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Wenfeng Huang , Guoan Xu , Wenjing Jia , Stuart Perry , Guangwei Gao

Composed image retrieval is a type of image retrieval task where the user provides a reference image as a starting point and specifies a text on how to shift from the starting point to the desired target image. However, most existing…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Xingyu Yang , Daqing Liu , Heng Zhang , Yong Luo , Chaoyue Wang , Jing Zhang

Real-world image super-resolution (Real-ISR) aims to reconstruct high-resolution images from low-resolution inputs degraded by complex, unknown processes. While many Stable Diffusion (SD)-based Real-ISR methods have achieved remarkable…

Image and Video Processing · Electrical Eng. & Systems 2025-03-11 Bin Chen , Gehui Li , Rongyuan Wu , Xindong Zhang , Jie Chen , Jian Zhang , Lei Zhang

Underwater images are severely degraded by wavelength-dependent light absorption and scattering, resulting in color distortion, low contrast, and loss of fine details that hinder vision-based underwater applications. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Afrah Shaahid , Muzammil Behzad

Entrusted with the goal of pixel-level object classification, the semantic segmentation networks entail the laborious preparation of pixel-level annotation masks. To obtain pixel-level annotation masks for a given class without human…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Joon Hyun Park , Kumju Jo , Sungyong Baik

In spite of recent progress, image diffusion models still produce artifacts. A common solution is to leverage the feedback provided by quality assessment systems or human annotators to optimize the model, where images are generally rated in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Yiyang Wang , Xi Chen , Xiaogang Xu , Sihui Ji , Yu Liu , Yujun Shen , Hengshuang Zhao

In this study, we reveal that the interaction between haze degradation and JPEG compression introduces complex joint loss effects, which significantly complicate image restoration. Existing dehazing models often neglect compression effects,…

Image and Video Processing · Electrical Eng. & Systems 2025-01-23 Ruicheng Zhang , Kanghui Tian , Zeyu Zhang , Qixiang Liu , Zhi Jin

Diffusion model (DM) has achieved SOTA performance by modeling the image synthesis process into a sequential application of a denoising network. However, different from image synthesis, image restoration (IR) has a strong constraint to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Bin Xia , Yulun Zhang , Shiyin Wang , Yitong Wang , Xinglong Wu , Yapeng Tian , Wenming Yang , Luc Van Gool