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Synchrotron radiation sources are widely used in various fields, among which computed tomography (CT) is one of the most important. The amount of effort expended by the operator varies depending on the subject. If the number of angles…

图像与视频处理 · 电气工程与系统科学 2021-09-08 Ling Li , Yu Hu

In Magnetic Resonance Imaging (MRI), image acquisitions are often undersampled in the measurement domain to accelerate the scanning process, at the expense of image quality. However, image quality is a crucial factor that influences the…

图像与视频处理 · 电气工程与系统科学 2024-05-31 Mevan Ekanayake , Zhifeng Chen , Mehrtash Harandi , Gary Egan , Zhaolin Chen

Computed tomography (CT) is one of the most widely used non-invasive imaging modalities for medical diagnosis. In clinical practice, CT images are usually acquired with large slice thicknesses due to the high cost of memory storage and…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Kwang-Hyun Uhm , Hyunjun Cho , Sung-Hoo Hong , Seung-Won Jung

Low-dose X-ray CT technology is one of important directions of current research and development of medical imaging equipment. A fast algorithm of blockwise sinogram filtering is presented for realtime low-dose CT imaging. A nonstationary…

计算机视觉与模式识别 · 计算机科学 2019-03-26 Fengling Wang , Bowen Lin , Shujun Fu , Shiling Xie , Zhigang Zhao , Yuliang Li

The improvement of computed tomography (CT) image resolution is beneficial to the subsequent medical diagnosis, but it is usually limited by the scanning devices and great expense. Convolutional neural network (CNN)-based methods have…

医学物理 · 物理学 2019-03-26 Chao Tang , Wenkun Zhang , Ziheng Li , Ailong Cai , Linyuan Wang , Lei Li , Ningning Liang , Bin Yan

Computed Tomography (CT) is a non-invasive imaging modality with applications ranging from healthcare to security. It reconstructs cross-sectional images of an object using a collection of projection data collected at different angles.…

图像与视频处理 · 电气工程与系统科学 2019-09-04 Muhammad Usman Ghani , W. Clem Karl

Denoising low-dose computed tomography (CT) images is a critical task in medical image computing. Supervised deep learning-based approaches have made significant advancements in this area in recent years. However, these methods typically…

图像与视频处理 · 电气工程与系统科学 2023-07-17 Xuan Liu , Yaoqin Xie , Jun Cheng , Songhui Diao , Shan Tan , Xiaokun Liang

Deep neural networks have made remarkable progresses on various computer vision tasks. Recent works have shown that depth, width and shortcut connections of networks are all vital to their performances. In this paper, we introduce a method…

计算机视觉与模式识别 · 计算机科学 2018-04-17 Wenqi Liu , Kun Zeng

Ensuring the realism of computer-generated synthetic images is crucial to deep neural network (DNN) training. Due to different semantic distributions between synthetic and real-world captured datasets, there exists semantic mismatch between…

计算机视觉与模式识别 · 计算机科学 2023-04-27 Ganning Zhao , Tingwei Shen , Suya You , C. -C. Jay Kuo

In portable, 3-D, or ultra-fast ultrasound (US) imaging systems, there is an increasing demand to reconstruct high quality images from limited number of data. However, the existing solutions require either hardware changes or…

计算机视觉与模式识别 · 计算机科学 2017-10-31 Yeo Hun Yoon , Jong Chul Ye

With the increasing popularity of deep learning in image processing, many learned lossless image compression methods have been proposed recently. One group of algorithms that have shown good performance are based on learned pixel-based…

图像与视频处理 · 电气工程与系统科学 2022-12-27 Fatih Kamisli

Conventional deep convolutional neural networks (CNNs) apply convolution operators uniformly in space across all feature maps for hundreds of layers - this incurs a high computational cost for real-time applications. For many problems such…

计算机视觉与模式识别 · 计算机科学 2018-06-08 Mengye Ren , Andrei Pokrovsky , Bin Yang , Raquel Urtasun

Computed Tomography (CT) is an advanced imaging technology used in many important applications. Here we present a deep-learning (DL) based CT super-resolution (SR) method that can reconstruct low-resolution (LR) sinograms into high…

图像与视频处理 · 电气工程与系统科学 2020-12-17 Zhicheng Zhang , Shaode Yu , Wenjian Qin , Xiaokun Liang , Yaoqin Xie , Guohua Cao

A major challenge in X-ray computed tomography (CT) is reducing radiation dose while maintaining high quality of reconstructed images. To reduce the radiation dose, one can reduce the number of projection views (sparse-view CT); however, it…

机器学习 · 统计学 2019-09-17 Xuehang Zheng , Il Yong Chun , Zhipeng Li , Yong Long , Jeffrey A. Fessler

X-ray computed tomography (CT) reconstructs cross-sectional images from projection data. However, ionizing X-ray radiation associated with CT scanning might induce cancer and genetic damage. Therefore, the reduction of radiation dose has…

图像与视频处理 · 电气工程与系统科学 2019-09-13 Huidong Xie , Hongming Shan , Wenxiang Cong , Xiaohua Zhang , Shaohua Liu , Ruola Ning , Ge Wang

Channel knowledge map (CKM) is a novel technique for achieving environment awareness, and thereby improving the communication and sensing performance for wireless systems. A fundamental problem associated with CKM is how to construct a…

信号处理 · 电气工程与系统科学 2024-11-15 Shiyu Wang , Xiaoli Xu , Yong Zeng

Industrial CT is useful for defect detection, dimensional inspection and geometric analysis. While it does not meet the needs of industrial mass production, because of its time-consuming imaging procedure. This article proposes a novel…

仪器与探测器 · 物理学 2022-06-20 Zheng Fang , Tingjun Wang , Bingan Yuan , Xinlin Qing , Shunren Li

Traditional radar imaging methods suffer from the problems of low resolution and poor noise suppression. We propose a new radar imaging method based on Self-supervised deep-learning-assisted compressed sensing (SS-DL-CS-Net). The original…

图像与视频处理 · 电气工程与系统科学 2022-08-09 Shaoyin Huang

The success of many computer vision tasks lies in the ability to exploit the interdependency between different image modalities such as intensity and depth. Fusing corresponding information can be achieved on several levels, and one…

计算机视觉与模式识别 · 计算机科学 2014-06-26 Martin Kiechle , Tim Habigt , Simon Hawe , Martin Kleinsteuber

In linear inverse problems, the goal is to recover a target signal from undersampled, incomplete or noisy linear measurements. Typically, the recovery relies on complex numerical optimization methods; recent approaches perform an unfolding…

机器学习 · 计算机科学 2020-01-08 Evaggelia Tsiligianni , Nikos Deligiannis