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Due to the high flexibility and remarkable performance, low-rank approximation methods has been widely studied for color image denoising. However, those methods mostly ignore either the cross-channel difference or the spatial variation of…

图像与视频处理 · 电气工程与系统科学 2024-03-05 Yiwen Shan , Dong Hu , Zhi Wang

We consider the image transmission problem over a noisy wireless channel via deep learning-based joint source-channel coding (DeepJSCC) along with a denoising diffusion probabilistic model (DDPM) at the receiver. Specifically, we are…

图像与视频处理 · 电气工程与系统科学 2024-09-23 Selim F. Yilmaz , Xueyan Niu , Bo Bai , Wei Han , Lei Deng , Deniz Gunduz

Denoising diffusion (score-based) generative models have recently achieved significant accomplishments in generating realistic and diverse data. These approaches define a forward diffusion process for transforming data into noise and a…

计算机视觉与模式识别 · 计算机科学 2023-03-17 Yuzhang Shang , Zhihang Yuan , Bin Xie , Bingzhe Wu , Yan Yan

As quotidian use of sophisticated cameras surges, people in modern society are more interested in capturing fine-quality images. However, the quality of the images might be inferior to people's expectations due to the noise contamination in…

图像与视频处理 · 电气工程与系统科学 2022-03-08 Yonggi Park , Kelum Gajamannage , Alexey Sadovski

Complex blur such as the mixup of space-variant and space-invariant blur, which is hard to model mathematically, widely exists in real images. In this paper, we propose a novel image deblurring method that does not need to estimate blur…

计算机视觉与模式识别 · 计算机科学 2020-11-17 Chunzhi Gu , Xuequan Lu , Ying He , Chao Zhang

This paper addresses interferometric phase (InPhase) image denoising, i.e., the denoising of phase modulo-2p images from sinusoidal 2p-periodic and noisy observations. The wrapping discontinuities present in the InPhase images, which are to…

信号处理 · 电气工程与系统科学 2018-10-26 Joshin P. Krishnan , José M. Bioucas-Dias

Many traditional computer vision algorithms generate realistic images by requiring that each patch in the generated image be similar to a patch in a training image and vice versa. Recently, this classical approach has been replaced by…

计算机视觉与模式识别 · 计算机科学 2022-09-07 Ariel Elnekave , Yair Weiss

Diffusion models (DMs) have achieved state-of-the-art results for image synthesis tasks as well as density estimation. Applied in the latent space of a powerful pretrained autoencoder (LDM), their immense computational requirements can be…

计算机视觉与模式识别 · 计算机科学 2022-10-21 Jeremias Traub

Large-scale generative models, such as text-to-image diffusion models, have garnered widespread attention across diverse domains due to their creative and high-fidelity image generation. Nonetheless, existing large-scale diffusion models…

计算机视觉与模式识别 · 计算机科学 2024-08-28 Younghyun Kim , Geunmin Hwang , Junyu Zhang , Eunbyung Park

Incorporating diffusion models in the image compression domain has the potential to produce realistic and detailed reconstructions, especially at extremely low bitrates. Previous methods focus on using diffusion models as expressive…

图像与视频处理 · 电气工程与系统科学 2024-10-10 Lucas Relic , Roberto Azevedo , Markus Gross , Christopher Schroers

Recovering ghost-free High Dynamic Range (HDR) images from multiple Low Dynamic Range (LDR) images becomes challenging when the LDR images exhibit saturation and significant motion. Recent Diffusion Models (DMs) have been introduced in HDR…

计算机视觉与模式识别 · 计算机科学 2024-04-02 Tao Hu , Qingsen Yan , Yuankai Qi , Yanning Zhang

The advancement of imaging devices and countless images generated everyday pose an increasingly high demand on image denoising, which still remains a challenging task in terms of both effectiveness and efficiency. To improve denoising…

图像与视频处理 · 电气工程与系统科学 2023-05-10 Zhaoming Kong , Fangxi Deng , Haomin Zhuang , Jun Yu , Lifang He , Xiaowei Yang

While diffusion models significantly improve the perceptual quality of super-resolved images, they usually require a large number of sampling steps, resulting in high computational costs and long inference times. Recent efforts have…

计算机视觉与模式识别 · 计算机科学 2024-11-22 Yong Liu , Hang Dong , Jinshan Pan , Qingji Dong , Kai Chen , Rongxiang Zhang , Lean Fu , Fei Wang

This paper presents PolyDiffuse, a novel structured reconstruction algorithm that transforms visual sensor data into polygonal shapes with Diffusion Models (DM), an emerging machinery amid exploding generative AI, while formulating…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Jiacheng Chen , Ruizhi Deng , Yasutaka Furukawa

We show that diffusion models can achieve image sample quality superior to the current state-of-the-art generative models. We achieve this on unconditional image synthesis by finding a better architecture through a series of ablations. For…

机器学习 · 计算机科学 2021-06-02 Prafulla Dhariwal , Alex Nichol

Diffusion models have shown great results in image generation and in image editing. However, current approaches are limited to low resolutions due to the computational cost of training diffusion models for high-resolution generation. We…

计算机视觉与模式识别 · 计算机科学 2022-10-25 Johannes Ackermann , Minjun Li

We provide an overview of the diffusion model as a method to generate new samples. Generative models have been recently adopted for tasks such as art generation (Stable Diffusion, Dall-E) and text generation (ChatGPT). Diffusion models in…

机器学习 · 统计学 2025-06-13 Justin Le

Visual synthesis has recently seen significant leaps in performance, largely due to breakthroughs in generative models. Diffusion models have been a key enabler, as they excel in image diversity. However, this comes at the cost of slow…

计算机视觉与模式识别 · 计算机科学 2024-12-05 Johannes Schusterbauer , Ming Gui , Pingchuan Ma , Nick Stracke , Stefan A. Baumann , Vincent Tao Hu , Björn Ommer

The class-conditional image generation based on diffusion models is renowned for generating high-quality and diverse images. However, most prior efforts focus on generating images for general categories, e.g., 1000 classes in ImageNet-1k. A…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Ziying Pan , Kun Wang , Gang Li , Feihong He , Yongxuan Lai

We develop a multiexposure image fusion method based on texture features, which exploits the edge preserving and intraregion smoothing property of nonlinear diffusion filters based on partial differential equations (PDE). With the captured…

多媒体 · 计算机科学 2013-07-11 Harbinder Singh , Vinay Kumar , Sunil Bhooshan
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