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This study proposes a theory of unsupervised super-resolution data assimilation (SRDA) using conditional variational autoencoders (CVAEs). We derive an evidence lower bound for unsupervised learning, showing that our theory is an extension…

Atmospheric and Oceanic Physics · Physics 2025-04-17 Yuki Yasuda , Ryo Onishi

Single image super-resolution traditionally assumes spatially-invariant degradation models, yet real-world imaging systems exhibit complex distance-dependent effects including atmospheric scattering, depth-of-field variations, and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Tianhao Guo , Bingjie Lu , Feng Wang , Zhengyang Lu

The target of space-time video super-resolution (STVSR) is to increase the spatial-temporal resolution of low-resolution (LR) and low frame rate (LFR) videos. Recent approaches based on deep learning have made significant improvements, but…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Hai Wang , Xiaoyu Xiang , Yapeng Tian , Wenming Yang , Qingmin Liao

In vision-enabled autonomous systems such as robots and autonomous cars, video object detection plays a crucial role, and both its speed and accuracy are important factors to provide reliable operation. The key insight we show in this paper…

Computer Vision and Pattern Recognition · Computer Science 2019-02-11 Ting-Wu Chin , Ruizhou Ding , Diana Marculescu

Video super-resolution (VSR) is the task of restoring high-resolution frames from a sequence of low-resolution inputs. Different from single image super-resolution, VSR can utilize frames' temporal information to reconstruct results with…

Image and Video Processing · Electrical Eng. & Systems 2022-08-25 Wenyi Lian , Wenjing Lian

The tradeoff between reconstruction quality and compute required for video super-resolution (VSR) remains a formidable challenge in its adoption for deployment on resource-constrained edge devices. While transformer-based VSR models have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Kavitha Viswanathan , Shashwat Pathak , Piyush Bharambe , Harsh Choudhary , Amit Sethi

State-of-the-art super-resolution (SR) algorithms require significant computational resources to achieve real-time throughput (e.g., 60Mpixels/s for HD video). This paper introduces FAST (Free Adaptive Super-resolution via Transfer), a…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Zhengdong Zhang , Vivienne Sze

Diffusion models have significantly advanced video super-resolution (VSR) by enhancing perceptual quality, largely through elaborately designed temporal modeling to ensure inter-frame consistency. However, existing methods usually suffer…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Xijun Wang , Xin Li , Bingchen Li , Zhibo Chen

Raw videos have been proven to own considerable feature redundancy where in many cases only a portion of frames can already meet the requirements for accurate recognition. In this paper, we are interested in whether such redundancy can be…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Lianyu Hu , Liqing Gao , Zekang Liu , Chi-Man Pun , Wei Feng

Adaptive stochastic gradient methods such as AdaGrad have gained popularity in particular for training deep neural networks. The most commonly used and studied variant maintains a diagonal matrix approximation to second order information by…

Video analysis tasks such as action recognition have received increasing research interest with growing applications in fields such as smart healthcare, thanks to the introduction of large-scale datasets and deep learning-based…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yuecong Xu , Haozhi Cao , Zhenghua Chen , Xiaoli Li , Lihua Xie , Jianfei Yang

As a fundamental challenge in visual computing, video super-resolution (VSR) focuses on reconstructing highdefinition video sequences from their degraded lowresolution counterparts. While deep convolutional neural networks have demonstrated…

Image and Video Processing · Electrical Eng. & Systems 2025-04-23 Biao Wu , Diankai Zhang , Shaoli Liu , Si Gao , Chengjian Zheng , Ning Wang

Video super-resolution (VSR) seeks to reconstruct high-resolution frames from low-resolution inputs. While diffusion-based methods have substantially improved perceptual quality, extending them to video remains challenging for two reasons:…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Jintong Hu , Bin Chen , Zhenyu Hu , Jiayue Liu , Guo Wang , Lu Qi

Video super-resolution (VSR) is a task that aims to reconstruct high-resolution (HR) frames from the low-resolution (LR) reference frame and multiple neighboring frames. The vital operation is to utilize the relative misaligned frames for…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Meiqin Liu , Shuo Jin , Chao Yao , Chunyu Lin , Yao Zhao

Joint-embedding self-supervised learning (SSL), the key paradigm for unsupervised representation learning from visual data, learns from invariances between semantically-related data pairs. We study the one-to-many mapping problem in SSL,…

Machine Learning · Computer Science 2026-02-03 Yipeng Zhang , Hafez Ghaemi , Jungyoon Lee , Shahab Bakhtiari , Eilif B. Muller , Laurent Charlin

Diffusion models have shown great potential in generating realistic image detail. However, adapting these models to video super-resolution (VSR) remains challenging due to their inherent stochasticity and lack of temporal modeling. Previous…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Yong Liu , Jinshan Pan , Yinchuan Li , Qingji Dong , Chao Zhu , Yu Guo , Fei Wang

Real-world video super-resolution (VSR) presents significant challenges due to complex and unpredictable degradations. Although some recent methods utilize image diffusion models for VSR and have shown improved detail generation…

Computer Vision and Pattern Recognition · Computer Science 2025-07-02 Zhe Kong , Le Li , Yong Zhang , Feng Gao , Shaoshu Yang , Tao Wang , Kaihao Zhang , Zhuoliang Kang , Xiaoming Wei , Guanying Chen , Wenhan Luo

Video super-resolution (VSR) aims to restore a photo-realistic high-resolution (HR) video frame from both its corresponding low-resolution (LR) frame (reference frame) and multiple neighboring frames (supporting frames). Due to varying…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Yapeng Tian , Yulun Zhang , Yun Fu , Chenliang Xu

Different from the Single Image Super-Resolution(SISR) task, the key for Video Super-Resolution(VSR) task is to make full use of complementary information across frames to reconstruct the high-resolution sequence. Since images from…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Lielin Jiang , Na Wang , Qingqing Dang , Rui Liu , Baohua Lai

To the best of our knowledge, the existing deep-learning-based Video Super-Resolution (VSR) methods exclusively make use of videos produced by the Image Signal Processor (ISP) of the camera system as inputs. Such methods are 1) inherently…

Image and Video Processing · Electrical Eng. & Systems 2021-02-24 Xiaohong Liu , Kangdi Shi , Zhe Wang , Jun Chen