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Diffusion-based image super-resolution (SR) methods have shown promise in reconstructing high-resolution images with fine details from low-resolution counterparts. However, these approaches typically require tens or even hundreds of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Xiao He , Huaao Tang , Zhijun Tu , Junchao Zhang , Kun Cheng , Hanting Chen , Yong Guo , Mingrui Zhu , Nannan Wang , Xinbo Gao , Jie Hu

Diffusion-based real-world image super-resolution (Real-ISR) methods have demonstrated impressive performance.To achieve efficient Real-ISR, many works employ Variational Score Distillation (VSD) to distill pre-trained stable-diffusion (SD)…

Image and Video Processing · Electrical Eng. & Systems 2026-03-03 Tianyi Zhang , Zheng-Peng Duan , Peng-Tao Jiang , Bo Li , Ming-Ming Cheng , Chun-Le Guo , Chongyi Li

Diffusion models, such as Stable Diffusion, have shown incredible performance on text-to-image generation. Since text-to-image generation often requires models to generate visual concepts with fine-grained details and attributes specified…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Xuehai He , Weixi Feng , Tsu-Jui Fu , Varun Jampani , Arjun Akula , Pradyumna Narayana , Sugato Basu , William Yang Wang , Xin Eric Wang

Despite the promise of synthesizing high-fidelity videos, Diffusion Transformers (DiTs) with 3D full attention suffer from expensive inference due to the complexity of attention computation and numerous sampling steps. For example, the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Hangliang Ding , Dacheng Li , Runlong Su , Peiyuan Zhang , Zhijie Deng , Ion Stoica , Hao Zhang

Diffusion models, known for their powerful generative capabilities, play a crucial role in addressing real-world super-resolution challenges. However, these models often focus on improving local textures while neglecting the impacts of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Chunyang Bi , Xin Luo , Sheng Shen , Mengxi Zhang , Huanjing Yue , Jingyu Yang

Video diffusion models have rapidly become the dominant paradigm for high-fidelity generative video synthesis, but their practical deployment remains constrained by severe inference costs. Compared with image generation, video synthesis…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Shitong Shao , Lichen Bai , Pengfei Wan , James Kwok , Zeke Xie

In this work, we first propose DiffVC-OSD, a One-Step Diffusion-based Perceptual Neural Video Compression framework. Unlike conventional multi-step diffusion-based methods, DiffVC-OSD feeds the reconstructed latent representation directly…

Image and Video Processing · Electrical Eng. & Systems 2025-08-12 Wenzhuo Ma , Zhenzhong Chen

Real-world low-resolution (LR) videos have diverse and complex degradations, imposing great challenges on video super-resolution (VSR) algorithms to reproduce their high-resolution (HR) counterparts with high quality. Recently, the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Xi Yang , Chenhang He , Jianqi Ma , Lei Zhang

Diffusion models have gained attention for their success in modeling complex distributions, achieving impressive perceptual quality in SR tasks. However, existing diffusion-based SR methods often suffer from high computational costs,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Rui Qin , Qijie Wang , Ming Sun , Haowei Zhu , Chao Zhou , Bin Wang

We present Stable Video Diffusion - a latent video diffusion model for high-resolution, state-of-the-art text-to-video and image-to-video generation. Recently, latent diffusion models trained for 2D image synthesis have been turned into…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Andreas Blattmann , Tim Dockhorn , Sumith Kulal , Daniel Mendelevitch , Maciej Kilian , Dominik Lorenz , Yam Levi , Zion English , Vikram Voleti , Adam Letts , Varun Jampani , Robin Rombach

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

Diffusion models have demonstrated empirical successes in various applications and can be adapted to task-specific needs via guidance. This paper studies a form of gradient guidance for adapting a pre-trained diffusion model towards…

Machine Learning · Statistics 2024-10-17 Yingqing Guo , Hui Yuan , Yukang Yang , Minshuo Chen , Mengdi Wang

Diffusion models have demonstrated excellent performance for real-world image super-resolution (Real-ISR), albeit at high computational costs. Most existing methods are trying to derive one-step diffusion models from multi-step counterparts…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Jianze Li , Jiezhang Cao , Zichen Zou , Xiongfei Su , Xin Yuan , Yulun Zhang , Yong Guo , Xiaokang Yang

The scalability of high-fidelity video diffusion models (VDMs) is constrained by two key sources of redundancy: the quadratic complexity of global spatio-temporal attention and the computational overhead of long iterative denoising…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Xinjian Wu , Hongmei Wang , Yuan Zhou , Qinglin Lu

Recent advances in diffusion-based real-world image super-resolution (Real-ISR) have demonstrated remarkable perceptual quality, yet the balance between fidelity and controllability remains a problem: multi-step diffusion-based methods…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Yushun Fang , Yuxiang Chen , Shibo Yin , Qiang Hu , Jiangchao Yao , Ya Zhang , Xiaoyun Zhang , Yanfeng Wang

Video Super-Resolution (VSR) has achieved significant progress through diffusion models, effectively addressing the over-smoothing issues inherent in GAN-based methods. Despite recent advances, three critical challenges persist in VSR…

Image and Video Processing · Electrical Eng. & Systems 2025-07-28 Weisong Zhao , Jingkai Zhou , Xiangyu Zhu , Weihua Chen , Xiao-Yu Zhang , Zhen Lei , Fan Wang

Video diffusion models have shown great potential in generating high-quality videos, making them an increasingly popular focus. However, their inherent iterative nature leads to substantial computational and time costs. While efforts have…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Xiaofeng Mao , Zhengkai Jiang , Fu-Yun Wang , Jiangning Zhang , Hao Chen , Mingmin Chi , Yabiao Wang , Wenhan Luo

Offline reinforcement learning (RL) faces a critical challenge of overestimating the value of out-of-distribution (OOD) actions. Existing methods mitigate this issue by penalizing unseen samples, yet they fail to accurately identify OOD…

Machine Learning · Computer Science 2026-05-12 Qingjun Wang , Hongtu Zhou , Hang Yu , Junqiao Zhao , Yanping Zhao , Chen Ye , Ziqiao Wang , Guang Chen

While recent advancements in Image Super-Resolution (SR) using diffusion models have shown promise in improving overall image quality, their application to scene text images has revealed limitations. These models often struggle with…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Keren Ye , Ignacio Garcia Dorado , Michalis Raptis , Mauricio Delbracio , Irene Zhu , Peyman Milanfar , Hossein Talebi

High-resolution video generation, while crucial for digital media and film, is computationally bottlenecked by the quadratic complexity of diffusion models, making practical inference infeasible. To address this, we introduce HiStream, an…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Haonan Qiu , Shikun Liu , Zijian Zhou , Zhaochong An , Weiming Ren , Zhiheng Liu , Jonas Schult , Sen He , Shoufa Chen , Yuren Cong , Tao Xiang , Ziwei Liu , Juan-Manuel Perez-Rua