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We introduce bidirectional edge diffraction response function (BEDRF), a new approach to model wave diffraction around edges with path tracing. The diffraction part of the wave is expressed as an integration on path space, and the wave-edge…

声音 · 计算机科学 2023-06-06 Chunxiao Cao , Zili An , Zhong Ren , Dinesh Manocha , Kun Zhou

There has been increasing interest in the generation of high-quality, realistic synthetic medical images in recent years. Such synthetic datasets can mitigate the scarcity of public datasets for artificial intelligence research, and can…

图像与视频处理 · 电气工程与系统科学 2025-07-15 Sanyam Jain , Bruna Neves de Freitas , Andreas Basse-OConnor , Alexandros Iosifidis , Ruben Pauwels

Most publicly accessible remote sensing data suffer from low resolution, limiting their practical applications. To address this, we propose a diffusion model guided by neural operators for continuous remote sensing image super-resolution…

图像与视频处理 · 电气工程与系统科学 2025-11-06 Zihao Xu , Yuzhi Tang , Bowen Xu , Qingquan Li

Powered by multimodal text-to-image priors, diffusion-based super-resolution excels at synthesizing intricate details; however, models trained on synthetic low-resolution (LR) and high-resolution (HR) image pairs often degrade when applied…

计算机视觉与模式识别 · 计算机科学 2026-04-17 Zihao Fan , Xin Lu , Yidi Liu , Jie Huang , Dong Li , Xueyang Fu , Baocai Yin

We present SinDiffusion, leveraging denoising diffusion models to capture internal distribution of patches from a single natural image. SinDiffusion significantly improves the quality and diversity of generated samples compared with…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Weilun Wang , Jianmin Bao , Wengang Zhou , Dongdong Chen , Dong Chen , Lu Yuan , Houqiang Li

We present DiSR-NeRF, a diffusion-guided framework for view-consistent super-resolution (SR) NeRF. Unlike prior works, we circumvent the requirement for high-resolution (HR) reference images by leveraging existing powerful 2D…

计算机视觉与模式识别 · 计算机科学 2024-04-02 Jie Long Lee , Chen Li , Gim Hee Lee

Diffusion models have achieved promising results in image restoration tasks, yet suffer from time-consuming, excessive computational resource consumption, and unstable restoration. To address these issues, we propose a robust and efficient…

计算机视觉与模式识别 · 计算机科学 2023-09-26 Hai Jiang , Ao Luo , Songchen Han , Haoqiang Fan , Shuaicheng Liu

Creating novel images by fusing visual cues from multiple sources is a fundamental yet underexplored problem in image-to-image generation, with broad applications in artistic creation, virtual reality and visual media. Existing methods…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Zeren Xiong , Yue Yu , Zedong Zhang , Shuo Chen , Jian Yang , Jun Li

Restoring low-resolution text images presents a significant challenge, as it requires maintaining both the fidelity and stylistic realism of the text in restored images. Existing text image restoration methods often fall short in hard…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Chenglu Pan , Xiaogang Xu , Ganggui Ding , Yunke Zhang , Wenbo Li , Jiarong Xu , Qingbiao Wu

3D image reconstruction from a limited number of 2D images has been a long-standing challenge in computer vision and image analysis. While deep learning-based approaches have achieved impressive performance in this area, existing deep…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Nivetha Jayakumar , Tonmoy Hossain , Miaomiao Zhang

The generation and enhancement of satellite imagery are critical in remote sensing, requiring high-quality, detailed images for accurate analysis. This research introduces a two-stage diffusion model methodology for synthesizing…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Ahmad Sebaq , Mohamed ElHelw

This paper presents a novel Two-Stage Diffusion Model (TS-Diff) for enhancing extremely low-light RAW images. In the pre-training stage, TS-Diff synthesizes noisy images by constructing multiple virtual cameras based on a noise space.…

计算机视觉与模式识别 · 计算机科学 2025-05-09 Yi Li , Zhiyuan Zhang , Jiangnan Xia , Jianghan Cheng , Qilong Wu , Junwei Li , Yibin Tian , Hui Kong

Diffusion models achieved great success in image synthesis, but still face challenges in high-resolution generation. Through the lens of discrete cosine transformation, we find the main reason is that \emph{the same noise level on a higher…

计算机视觉与模式识别 · 计算机科学 2023-09-08 Jiayan Teng , Wendi Zheng , Ming Ding , Wenyi Hong , Jianqiao Wangni , Zhuoyi Yang , Jie Tang

Reference-based Image Super-Resolution (RefSR) aims to restore a low-resolution (LR) image by utilizing the semantic and texture information from an additional reference high-resolution (reference HR) image. Existing diffusion-based RefSR…

计算机视觉与模式识别 · 计算机科学 2025-08-15 Zhenning Shi , Zizheng Yan , Yuhang Yu , Clara Xue , Jingyu Zhuang , Qi Zhang , Jinwei Chen , Tao Li , Qingnan Fan

In recent times, diffusion models have achieved remarkable performance in image restoration tasks. Their core mechanism relies on the restricted presumption of degradation prior to the additive noise operation. However, the blur model, one…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Sasidhar Parvathireddy , Vamsidhar Saraswathula , Rama Krishna Gorthi

Diffusion models (DMs) have exhibited remarkable efficacy in various image restoration tasks. However, existing approaches typically operate within the high-dimensional pixel space, resulting in high computational overhead. While methods…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Yang Zheng , Wen Li , Zhaoqiang Liu

Three-dimensional microscopy is often limited by anisotropic spatial resolution, resulting in lower axial resolution than lateral resolution. Current State-of-The-Art (SoTA) isotropic reconstruction methods utilizing deep neural networks…

图像与视频处理 · 电气工程与系统科学 2023-06-22 Mingjie Pan , Yulu Gan , Fangxu Zhou , Jiaming Liu , Aimin Wang , Shanghang Zhang , Dawei Li

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…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Yushun Fang , Yuxiang Chen , Shibo Yin , Qiang Hu , Jiangchao Yao , Ya Zhang , Xiaoyun Zhang , Yanfeng Wang

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…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Yong Liu , Jinshan Pan , Yinchuan Li , Qingji Dong , Chao Zhu , Yu Guo , Fei Wang

The objective of image super-resolution is to generate clean and high-resolution images from degraded versions. Recent advancements in diffusion modeling have led to the emergence of various image super-resolution techniques that leverage…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Haolan Chen , Jinhua Hao , Kai Zhao , Kun Yuan , Ming Sun , Chao Zhou , Wei Hu