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Recent advances in generative adversarial networks (GANs) have shown remarkable progress in generating high-quality images. However, this gain in performance depends on the availability of a large amount of training data. In limited data…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Puneet Mangla , Nupur Kumari , Mayank Singh , Balaji Krishnamurthy , Vineeth N Balasubramanian

Deep image prior (DIP) has been successfully applied to positron emission tomography (PET) image restoration, enabling represent implicit prior using only convolutional neural network architecture without training dataset, whereas the…

Medical Physics · Physics 2024-04-23 Yuya Onishi , Fumio Hashimoto , Kibo Ote , Keisuke Matsubara , Masanobu Ibaraki

Generative Adversarial Networks (GANs) are a class of neural networks that have been widely used in the field of image-to-image translation. In this paper, we propose a streamlined image-to-image translation network with a simpler…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Guangzong Chen , Mingui Sun , Zhi-Hong Mao , Kangni Liu , Wenyan Jia

Recently, deep learning approaches have been extensively studied for low-dose CT denoising thanks to its superior performance despite the fast computational time. In particular, cycleGAN has been demonstrated as a powerful unsupervised…

Image and Video Processing · Electrical Eng. & Systems 2020-08-14 Jawook Gu , Jong Chul Ye

Image-to-image translation is considered a new frontier in the field of medical image analysis, with numerous potential applications. However, a large portion of recent approaches offers individualized solutions based on specialized…

Computer Vision and Pattern Recognition · Computer Science 2019-11-26 Karim Armanious , Chenming Jiang , Marc Fischer , Thomas Küstner , Konstantin Nikolaou , Sergios Gatidis , Bin Yang

Single Image Super-resolution (SISR) produces high-resolution images with fine spatial resolutions from aremotely sensed image with low spatial resolution. Recently, deep learning and generative adversarial networks(GANs) have made…

Image and Video Processing · Electrical Eng. & Systems 2022-02-01 Fayaz Ali Dharejo , Farah Deeba , Yuanchun Zhou , Bhagwan Das , Munsif Ali Jatoi , Muhammad Zawish , Yi Du , Xuezhi Wang

Generative adversarial network (GAN) has greatly improved the quality of unsupervised image generation. Previous GAN-based methods often require a large amount of high-quality training data while producing a small number (e.g., tens) of…

Computer Vision and Pattern Recognition · Computer Science 2019-09-26 Chunpeng Wu , Wei Wen , Yiran Chen , Hai Li

Area of image inpainting over relatively large missing regions recently advanced substantially through adaptation of dedicated deep neural networks. However, current network solutions still introduce undesired artifacts and noise to the…

Computer Vision and Pattern Recognition · Computer Science 2018-03-21 Ugur Demir , Gozde Unal

Generative adversarial networks (GANs) have enjoyed much success in learning high-dimensional distributions. Learning objectives approximately minimize an $f$-divergence ($f$-GANs) or an integral probability metric (Wasserstein GANs)…

Machine Learning · Computer Science 2020-06-19 Jiaming Song , Stefano Ermon

In recent years, research on image generation methods has been developing fast. The auto-encoding variational Bayes method (VAEs) was proposed in 2013, which uses variational inference to learn a latent space from the image database and…

Computer Vision and Pattern Recognition · Computer Science 2018-07-12 Guoqiang Zhong , Wei Gao , Yongbin Liu , Youzhao Yang

Supervised learning-based methods yield robust denoising results, yet they are inherently limited by the need for large-scale clean/noisy paired datasets. The use of unsupervised denoisers, on the other hand, necessitates a more detailed…

Image and Video Processing · Electrical Eng. & Systems 2021-11-30 Nahyun Kim , Donggon Jang , Sunhyeok Lee , Bomi Kim , Dae-Shik Kim

We propose a unified Generative Adversarial Network (GAN) for controllable image-to-image translation, i.e., transferring an image from a source to a target domain guided by controllable structures. In addition to conditioning on a…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Hao Tang , Hong Liu , Nicu Sebe

In this paper, we propose a method to add constraints that are un-formulatable in generative adversarial networks (GAN)-based arbitrary size RAW Bayer image generation. It is shown theoretically that by using the transformed data in GAN…

Image and Video Processing · Electrical Eng. & Systems 2021-12-16 Wei Zhou , Xiangyu Zhang , Hongyu Wang , Shenghua Gao , Xin Lou

Synchrotron-based x-ray tomography is a noninvasive imaging technique that allows for reconstructing the internal structure of materials at high spatial resolutions from tens of micrometers to a few nanometers. In order to resolve sample…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Zhengchun Liu , Tekin Bicer , Rajkumar Kettimuthu , Doga Gursoy , Francesco De Carlo , Ian Foster

Getting rid of the fundamental limitations in fitting to the paired training data, recent unsupervised low-light enhancement methods excel in adjusting illumination and contrast of images. However, for unsupervised low light enhancement,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Zhangkai Ni , Wenhan Yang , Hanli Wang , Shiqi Wang , Lin Ma , Sam Kwong

Direct reconstruction methods have been developed to estimate parametric images directly from the measured PET sinograms by combining the PET imaging model and tracer kinetics in an integrated framework. Due to limited counts received,…

Image and Video Processing · Electrical Eng. & Systems 2021-06-22 Kuang Gong , Ciprian Catana , Jinyi Qi , Quanzheng Li

Recent advances in Generative Artificial Intelligence have fueled numerous applications, particularly those involving Generative Adversarial Networks (GANs), which are essential for synthesizing realistic photos and videos. However,…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-11-07 Ziji Shi , Jialin Li , Yang You

Deep learning has been extensively used in medical imaging applications, assuming that the test and training datasets belong to the same probability distribution. However, a common challenge arises when working with medical images generated…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Mohd Usama , Belal Ahmad , Christer Gronlund , Faleh Menawer R Althiyabi

Positron emission tomography (PET) imaging is an imaging modality for diagnosing a number of neurological diseases. In contrast to Magnetic Resonance Imaging (MRI), PET is costly and involves injecting a radioactive substance into the…

Image and Video Processing · Electrical Eng. & Systems 2019-08-23 Haoliang Sun , Ronak Mehta , Hao H. Zhou , Zhichun Huang , Sterling C. Johnson , Vivek Prabhakaran , Vikas Singh

Inter-frame motion in dynamic cardiac positron emission tomography (PET) using rubidium-82 (82-Rb) myocardial perfusion imaging impacts myocardial blood flow (MBF) quantification and the diagnosis accuracy of coronary artery diseases.…