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Recent progress in image-to-image translation has witnessed the success of generative adversarial networks (GANs). However, GANs usually contain a huge number of parameters, which lead to intolerant memory and computation consumption and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-26 Linfeng Zhang , Xin Chen , Runpei Dong , Kaisheng Ma

Super-resolution remains a promising technique to enhance the quality of low-resolution images. This study introduces CATformer (Contrastive Adversarial Transformer), a novel neural network integrating diffusion-inspired feature refinement…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Qinyi Tian , Spence Cox , Laura E. Dalton

Recently, it has been demonstrated that deep neural networks can significantly improve the performance of single image super-resolution (SISR). Numerous studies have concentrated on raising the quantitative quality of super-resolved (SR)…

Computer Vision and Pattern Recognition · Computer Science 2020-09-14 Zheng Hui , Jie Li , Xinbo Gao , Xiumei Wang

The need for comprehensive and automated screening methods for retinal image classification has long been recognized. Well-qualified doctors annotated images are very expensive and only a limited amount of data is available for various…

Computer Vision and Pattern Recognition · Computer Science 2021-02-02 Lie Ju , Xin Wang , Xin Zhao , Huimin Lu , Dwarikanath Mahapatra , Paul Bonnington , Zongyuan Ge

The computational burden of the iterative sampling process remains a major challenge in diffusion-based Low-Light Image Enhancement (LLIE). Current acceleration methods, whether training-based or training-free, often lead to significant…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Guanzhou Lan , Qianli Ma , Yuqi Yang , Zhigang Wang , Dong Wang , Xuelong Li , Bin Zhao

Recent diffusion model advancements have enabled high-fidelity images to be generated using text prompts. However, a domain gap exists between generated images and real-world images, which poses a challenge in generating high-quality…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Yuechen Zhang , Jinbo Xing , Eric Lo , Jiaya Jia

Current diffusion-based super-resolution (SR) approaches achieve commendable performance at the cost of high inference overhead. Therefore, distillation techniques are utilized to accelerate the multi-step teacher model into one-step…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Weiyi You , Mingyang Zhang , Leheng Zhang , Xingyu Zhou , Kexuan Shi , Shuhang Gu

In diffusion models, samples are generated through an iterative refinement process, requiring hundreds of sequential model evaluations. Several recent methods have introduced approximations (fewer discretization steps or distillation) to…

Machine Learning · Computer Science 2024-12-12 Nikil Roashan Selvam , Amil Merchant , Stefano Ermon

There is a growing demand for high-resolution (HR) medical images in both the clinical and research applications. Image quality is inevitably traded off with the acquisition time for better patient comfort, lower examination costs, dose,…

Image and Video Processing · Electrical Eng. & Systems 2021-06-07 Kuan Zhang , Haoji Hu , Kenneth Philbrick , Gian Marco Conte , Joseph D. Sobek , Pouria Rouzrokh , Bradley J. Erickson

Diffusion models (DMs) have demonstrated remarkable success in real-world image super-resolution (SR), yet their reliance on time-consuming multi-step sampling largely hinders their practical applications. While recent efforts have…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Jiaqi Xu , Wenbo Li , Haoze Sun , Fan Li , Zhixin Wang , Long Peng , Jingjing Ren , Haoran Yang , Xiaowei Hu , Renjing Pei , Pheng-Ann Heng

We demonstrate training of a Generative Adversarial Network (GAN) for prediction of optical property maps (scattering and absorption) using spatial frequency domain imaging (SFDI) image data sets generated synthetically with free…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Ahmed Osman , Jane Crowley , George Gordon

Convolutional neural networks (CNNs) have been extensively and successfully applied to the task of synthetic aperture radar (SAR) image change detection. However, conventional convolutional layers are inherently limited by their local…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Baogui Huan , Chuanzheng Gong , Dezhong Chen , Feng Gao , Junyu Dong , Qian Du

Recent advances in diffusion models have enabled the creation of deceptively real images, posing significant security risks when misused. In this study, we empirically show that different timesteps of DDIM inversion reveal varying subtle…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Yixin Wu , Feiran Zhang , Tianyuan Shi , Ruicheng Yin , Zhenghua Wang , Zhenliang Gan , Xiaohua Wang , Changze Lv , Xiaoqing Zheng , Xuanjing Huang

Generative Adversarial Networks (GANs) have been widely used to recover vivid textures in image super-resolution (SR) tasks. In particular, one discriminator is utilized to enable the SR network to learn the distribution of real-world…

Image and Video Processing · Electrical Eng. & Systems 2024-03-01 Bingchen Li , Xin Li , Hanxin Zhu , Yeying Jin , Ruoyu Feng , Zhizheng Zhang , Zhibo Chen

Diffusion models are powerful generative models that achieve state-of-the-art performance in image synthesis. However, training them demands substantial amounts of data and computational resources. Continual learning would allow for…

Machine Learning · Computer Science 2025-03-05 Sergi Masip , Pau Rodriguez , Tinne Tuytelaars , Gido M. van de Ven

Diffusion distillation represents a highly promising direction for achieving faithful text-to-image generation in a few sampling steps. However, despite recent successes, existing distilled models still do not provide the full spectrum of…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Nikita Starodubcev , Mikhail Khoroshikh , Artem Babenko , Dmitry Baranchuk

Automatic colorization of images without human intervention has been a subject of interest in the machine learning community for a brief period of time. Assigning color to an image is a highly ill-posed problem because of its innate nature…

Image and Video Processing · Electrical Eng. & Systems 2021-12-30 Shreyas Kalvankar , Hrushikesh Pandit , Pranav Parwate , Atharva Patil , Snehal Kamalapur

Synthetic Aperture Radar (SAR) and optical image registration is essential for remote sensing data fusion, with applications in military reconnaissance, environmental monitoring, and disaster management. However, challenges arise from…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Wenfei Zhang , Ruipeng Zhao , Yongxiang Yao , Yi Wan , Peihao Wu , Jiayuan Li , Yansheng Li , Yongjun Zhang

Image super-resolution aims to synthesize high-resolution image from a low-resolution image. It is an active area to overcome the resolution limitations in several applications like low-resolution object-recognition, medical image…

Image and Video Processing · Electrical Eng. & Systems 2023-12-05 Neeraj Baghel , Shiv Ram Dubey , Satish Kumar Singh

Multi-weather image restoration has witnessed incredible progress, while the increasing model capacity and expensive data acquisition impair its applications in memory-limited devices. Data-free distillation provides an alternative for…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Pei Wang , Xiaotong Luo , Yuan Xie , Yanyun Qu