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Weakly-supervised learning has become a popular technology in recent years. In this paper, we propose a novel medical image classification algorithm, called Weakly-Supervised Generative Adversarial Networks (WSGAN), which only uses a small…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Jiawei Mao , Xuesong Yin , Yuanqi Chang , Qi Huang

Acquiring high-quality Positron Emission Tomography (PET) images requires administering high-dose radiotracers, which increases radiation exposure risks. Generating standard-dose PET (SPET) from low-dose PET (LPET) has become a potential…

Image and Video Processing · Electrical Eng. & Systems 2025-06-24 Xiaolong Niu , Zanting Ye , Xu Han , Yanchao Huang , Hao Sun , Hubing Wu , Lijun Lu

Super-resolution techniques have the potential to reduce the computational cost of cosmological and astrophysical simulations. This can be achieved by enabling traditional simulation methods to run at lower resolution and then efficiently…

Astrophysics of Galaxies · Physics 2025-06-24 John Brennan , Sreedhar Balu , Yuxiang Qin , John Regan , Chris Power

Diffusion Probabilistic Models (DPMs) have demonstrated substantial promise in image generation tasks but heavily rely on the availability of large amounts of training data. Previous works, like GANs, have tackled the limited data problem…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Xiyu Wang , Baijiong Lin , Daochang Liu , Chang Xu

The past few years have witnessed fast development in video quality enhancement via deep learning. Existing methods mainly focus on enhancing the objective quality of compressed video while ignoring its perceptual quality. In this paper, we…

Image and Video Processing · Electrical Eng. & Systems 2020-08-04 Jianyi Wang , Xin Deng , Mai Xu , Congyong Chen , Yuhang Song

Recent years have witnessed the great success of deep convolutional neural networks (CNNs) in image denoising. Albeit deeper network and larger model capacity generally benefit performance, it remains a challenging practical issue to train…

Image and Video Processing · Electrical Eng. & Systems 2020-10-26 Yali Peng , Yue Cao , Shigang Liu , Jian Yang , Wangmeng Zuo

This paper presents a novel method for accelerating path-planning tasks in unknown scenes with obstacles by utilizing Wasserstein Generative Adversarial Networks (WGANs) with Gradient Penalty (GP) to approximate the distribution of…

Robotics · Computer Science 2025-01-14 Jorge Ocampo Jimenez , Wael Suleiman

Due to various physical degradation factors and limited counts received, PET image quality needs further improvements. The denoising diffusion probabilistic models (DDPM) are distribution learning-based models, which try to transform a…

Image and Video Processing · Electrical Eng. & Systems 2022-09-15 Kuang Gong , Keith A. Johnson , Georges El Fakhri , Quanzheng Li , Tinsu Pan

In this paper, we propose a principled Perceptual Adversarial Networks (PAN) for image-to-image transformation tasks. Unlike existing application-specific algorithms, PAN provides a generic framework of learning mapping relationship between…

Computer Vision and Pattern Recognition · Computer Science 2019-04-04 Chaoyue Wang , Chang Xu , Chaohui Wang , Dacheng Tao

Fusing multi-modality medical images, such as MR and PET, can provide various anatomical or functional information about human body. But PET data is always unavailable due to different reasons such as cost, radiation, or other limitations.…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Shengye Hu , Baiying Lei , Yong Wang , Zhiguang Feng , Yanyan Shen , Shuqiang Wang

Utilizing a low-dose CT approach significantly reduces the radiation exposure for patients, yet it introduces challenges, such as increased noise and artifacts in the resultant images, which can hinder accurate medical diagnostics.…

Image and Video Processing · Electrical Eng. & Systems 2024-04-03 Helena Shawn , Thompson Chyrikov , Jacob Lanet , Lam-chi Chen , Jim Zhao , Christina Chajo

Generative Adversarial Networks (GANs) are considered the state-of-the-art in the field of image generation. They learn the joint distribution of the training data and attempt to generate new data samples in high dimensional space following…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Sherif Abdulatif , Karim Armanious , Fady Aziz , Urs Schneider , Bin Yang

Generative adversarial networks (GANs) have shown remarkable success in generating realistic images and are increasingly used in medical imaging for image-to-image translation tasks. However, GANs tend to suffer from a frequency bias…

Image and Video Processing · Electrical Eng. & Systems 2023-10-18 Ivo M. Baltruschat , Felix Kreis , Alexander Hoelscher , Melanie Dohmen , Matthias Lenga

In few-shot image generation, directly training GAN models on just a handful of images faces the risk of overfitting. A popular solution is to transfer the models pretrained on large source domains to small target ones. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Yuxuan Duan , Li Niu , Yan Hong , Liqing Zhang

Phantoms for surgical training are able to mimic cutting and suturing properties and patient-individual shape of organs, but lack a realistic visual appearance that captures the heterogeneity of surgical scenes. In order to overcome this in…

Image and Video Processing · Electrical Eng. & Systems 2019-06-25 Sandy Engelhardt , Lalith Sharan , Matthias Karck , Raffaele De Simone , Ivo Wolf

Image-to-image translation is a common task in computer vision and has been rapidly increasing the impact on the field of medical imaging. Deep learning-based methods that employ conditional generative adversarial networks (cGANs), such as…

Image and Video Processing · Electrical Eng. & Systems 2024-02-05 Wentao Chen , Xichen Xu , Jie Luo , Weimin Zhou

The state-of-the-art approaches in Generative Adversarial Networks (GANs) are able to learn a mapping function from one image domain to another with unpaired image data. However, these methods often produce artifacts and can only be able to…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Hao Tang , Dan Xu , Nicu Sebe , Yan Yan

In PET, the amount of relative (signal-dependent) noise present in different body regions can be significantly different and is inherently related to the number of counts present in that region. The number of counts in a region depends, in…

Image and Video Processing · Electrical Eng. & Systems 2022-12-20 Ye Li , Jianan Cui , Junyu Chen , Guodong Zeng , Scott Wollenweber , Floris Jansen , Se-In Jang , Kyungsang Kim , Kuang Gong , Quanzheng Li

With the development of convolutional neural network, deep learning has shown its success for retinal disease detection from optical coherence tomography (OCT) images. However, deep learning often relies on large scale labelled data for…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Kang Zhou , Shenghua Gao , Jun Cheng , Zaiwang Gu , Huazhu Fu , Zhi Tu , Jianlong Yang , Yitian Zhao , Jiang Liu

To reduce the potential radiation risk, low-dose CT has attracted much attention. However, simply lowering the radiation dose will lead to significant deterioration of the image quality. In this paper, we propose a noise reduction method…

Medical Physics · Physics 2016-10-04 Hu Chen , Yi Zhang , Weihua Zhang , Peixi Liao , Ke Li , Jiliu Zhou , Ge Wang
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