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Generative Adversarial Networks (GANs) have obtained extraordinary success in the generation of realistic images, a domain where a lower pixel-level accuracy is acceptable. We study the problem, not yet tackled in the literature, of…

计算机视觉与模式识别 · 计算机科学 2019-07-01 Emanuele Ghelfi , Paolo Galeone , Michele De Simoni , Federico Di Mattia

We consider the single image super-resolution problem in a more general case that the low-/high-resolution pairs and the down-sampling process are unavailable. Different from traditional super-resolution formulation, the low-resolution…

计算机视觉与模式识别 · 计算机科学 2018-09-05 Yuan Yuan , Siyuan Liu , Jiawei Zhang , Yongbing Zhang , Chao Dong , Liang Lin

Recently, most of state-of-the-art single image super-resolution (SISR) methods have attained impressive performance by using deep convolutional neural networks (DCNNs). The existing SR methods have limited performance due to a fixed…

图像与视频处理 · 电气工程与系统科学 2021-07-08 Rao Muhammad Umer , Asad Munir , Christian Micheloni

Generative adversarial networks (GAN) and generative diffusion models (DM) have been widely used in real-world image super-resolution (Real-ISR) to enhance the image perceptual quality. However, these generative models are prone to…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Du Chen , Zhengqiang Zhang , Jie Liang , Lei Zhang

Recent years have witnessed the unprecedented success of deep convolutional neural networks (CNNs) in single image super-resolution (SISR). However, existing CNN-based SISR methods mostly assume that a low-resolution (LR) image is bicubicly…

计算机视觉与模式识别 · 计算机科学 2018-05-25 Kai Zhang , Wangmeng Zuo , Lei Zhang

Image completion has achieved significant progress due to advances in generative adversarial networks (GANs). Albeit natural-looking, the synthesized contents still lack details, especially for scenes with complex structures or images with…

计算机视觉与模式识别 · 计算机科学 2017-11-28 Pengpeng Liu , Xiaojuan Qi , Pinjia He , Yikang Li , Michael R. Lyu , Irwin King

Recent success in the field of single image super-resolution (SISR) is achieved by optimizing deep convolutional neural networks (CNNs) in the image space with the L1 or L2 loss. However, when trained with these loss functions, models…

图像与视频处理 · 电气工程与系统科学 2022-02-03 Lusine Abrahamyan , Anh Minh Truong , Wilfried Philips , Nikos Deligiannis

We address the problem of finding realistic geometric corrections to a foreground object such that it appears natural when composited into a background image. To achieve this, we propose a novel Generative Adversarial Network (GAN)…

计算机视觉与模式识别 · 计算机科学 2018-03-06 Chen-Hsuan Lin , Ersin Yumer , Oliver Wang , Eli Shechtman , Simon Lucey

Image quality measurement is a critical problem for image super-resolution (SR) algorithms. Usually, they are evaluated by some well-known objective metrics, e.g., PSNR and SSIM, but these indices cannot provide suitable results in…

计算机视觉与模式识别 · 计算机科学 2018-11-02 Xiaotong Luo , Rong Chen , Yuan Xie , Yanyun Qu , Cuihua Li

Single image super-resolution (SISR) is a very popular topic nowadays, which has both research value and practical value. In daily life, we crop a large image into sub-images to do super-resolution and then merge them together. Although…

计算机视觉与模式识别 · 计算机科学 2019-07-31 Junyu , Wang , Rong Song

We extensively study how to combine Generative Adversarial Networks and learned compression to obtain a state-of-the-art generative lossy compression system. In particular, we investigate normalization layers, generator and discriminator…

图像与视频处理 · 电气工程与系统科学 2020-10-26 Fabian Mentzer , George Toderici , Michael Tschannen , Eirikur Agustsson

Spatial resolution of medical images can be improved using super-resolution methods. Real Enhanced Super Resolution Generative Adversarial Network (Real-ESRGAN) is one of the recent effective approaches utilized to produce higher resolution…

图像与视频处理 · 电气工程与系统科学 2022-07-19 Shawkh Ibne Rashid , Elham Shakibapour , Mehran Ebrahimi

Single image super-resolution (SISR) is a notoriously challenging ill-posed problem, which aims to obtain a high-resolution (HR) output from one of its low-resolution (LR) versions. To solve the SISR problem, recently powerful deep learning…

计算机视觉与模式识别 · 计算机科学 2019-07-15 Wenming Yang , Xuechen Zhang , Yapeng Tian , Wei Wang , Jing-Hao Xue

While implicit generative models such as GANs have shown impressive results in high quality image reconstruction and manipulation using a combination of various losses, we consider a simpler approach leading to surprisingly strong results.…

计算机视觉与模式识别 · 计算机科学 2018-08-02 Muhammad Waleed Gondal , Bernhard Schölkopf , Michael Hirsch

Compared with the conventional 1*1 acquisition mode of projection in computed tomography (CT) image reconstruction, the 2*2 acquisition mode improves the collection efficiency of the projection and reduces the X-ray exposure time. However,…

医学物理 · 物理学 2020-08-10 Chao Tang , Wenkun Zhang , Linyuan Wang , Ailong Cai , Ningning Liang , Lei Li , Bin Yan

Most of the existing learning-based single image superresolution (SISR) methods are trained and evaluated on simulated datasets, where the low-resolution (LR) images are generated by applying a simple and uniform degradation (i.e., bicubic…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Jianrui Cai , Hui Zeng , Hongwei Yong , Zisheng Cao , Lei Zhang

Recently image inpainting has witnessed rapid progress due to generative adversarial networks (GAN) that are able to synthesize realistic contents. However, most existing GAN-based methods for semantic inpainting apply an auto-encoder…

计算机视觉与模式识别 · 计算机科学 2017-12-22 Haofeng Li , Guanbin Li , Liang Lin , Yizhou Yu

Single-Image Super-Resolution can support robotic tasks in environments where a reliable visual stream is required to monitor the mission, handle teleoperation or study relevant visual details. In this work, we propose an efficient…

图像与视频处理 · 电气工程与系统科学 2023-05-10 Simone Angarano , Francesco Salvetti , Mauro Martini , Marcello Chiaberge

Deep convolutional neural networks (CNNs) have recently achieved great success for single image super-resolution (SISR) task due to their powerful feature representation capabilities. The most recent deep learning based SISR methods focus…

图像与视频处理 · 电气工程与系统科学 2020-09-11 Rao Muhammad Umer , Gian Luca Foresti , Christian Micheloni

Convolutional neural network (CNN)-based methods have achieved great success for single-image superresolution (SISR). However, most models attempt to improve reconstruction accuracy while increasing the requirement of number of model…

图像与视频处理 · 电气工程与系统科学 2020-08-05 Supratik Banerjee , Cagri Ozcinar , Aakanksha Rana , Aljosa Smolic , Michael Manzke