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Hyperspectral imaging enables versatile applications due to its competence in capturing abundant spatial and spectral information, which are crucial for identifying substances. However, the devices for acquiring hyperspectral images are…

图像与视频处理 · 电气工程与系统科学 2022-07-14 Jingang Zhang , Runmu Su , Wenqi Ren , Qiang Fu , Felix Heide , Yunfeng Nie

Multipath effects significantly influence the quality of microwave imaging in highly reflective environments, while the physical measurement aperture size constrains resolution. It is shown that by exploiting multipath reflections, improved…

图像与视频处理 · 电气工程与系统科学 2026-05-06 Quanfeng Wang , Mei Song Tong , Thomas F. Eibert

In the reconstruction process of unknown multiple scattering objects in inverse medium scattering problems, the first important step is to effectively locate some approximate domains that contain all inhomogeneous media. Without such an…

数值分析 · 数学 2015-06-12 Keji Liu , Jun Zou

We developed a positron emission tomography (PET) system for multiple-isotope imaging. Our PET system, named multiple-isotope PET (MI-PET), can distinguish between different tracer nuclides using coincidence measurement of prompt…

Channel pruning has been identified as an effective approach to constructing efficient network structures. Its typical pipeline requires iterative pruning and fine-tuning. In this work, we propose a novel single-shot channel pruning…

计算机视觉与模式识别 · 计算机科学 2019-02-19 Chengcheng Li , Zi Wang , Xiangyang Wang , Hairong Qi

Proton Computed Tomography (CT) is a prototype imaging modality for the reconstruction of the Relative Stopping Power of a patient, for more accurate calculations of the dose distributions in proton therapy dose planning. The measurements…

The dose of X-ray radiation and the scanning time are crucial factors in computed tomography (CT) for clinical applications. In this work, we introduce a multi-source static CT imaging system designed to rapidly acquire sparse view and…

医学物理 · 物理学 2025-01-03 Ziju Shen , Haimiao Zhang , Bin Dong , Jun Qiu , Yunxiang Li , Zhili Cui

In this paper, we consider minimizing the L1/L2 term on the gradient for a limited-angle scanning problem in computed tomography (CT) reconstruction. We design a specific splitting framework for an unconstrained optimization model so that…

最优化与控制 · 数学 2021-03-19 Chao Wang , Min Tao , James Nagy , Yifei Lou

To obtain high-quality positron emission tomography (PET) while minimizing radiation exposure, a range of methods have been designed to reconstruct standard-dose PET (SPET) from corresponding low-dose PET (LPET) images. However, most…

图像与视频处理 · 电气工程与系统科学 2024-04-11 Yuchen Fei , Yanmei Luo , Yan Wang , Jiaqi Cui , Yuanyuan Xu , Jiliu Zhou , Dinggang Shen

In clinical practice, multi-modal magnetic resonance imaging (MRI) with different contrasts is usually acquired in a single study to assess different properties of the same region of interest in the human body. The whole acquisition process…

图像与视频处理 · 电气工程与系统科学 2022-04-05 Kai Xuan , Lei Xiang , Xiaoqian Huang , Lichi Zhang , Shu Liao , Dinggang Shen , Qian Wang

In the past decades, Computed Tomography (CT) has established itself as one of the most important imaging techniques in medicine. Today, the applicability of CT is only limited by the deposited radiation dose, reduction of which manifests…

图像与视频处理 · 电气工程与系统科学 2022-03-25 Martin Zach , Erich Kobler , Thomas Pock

X-ray tomography has been studied in various fields. Although a great deal of effort has been directed at reconstructing the projection image set from a rigid-type specimen, little attention has been addressed to the reconstruction of…

计算物理 · 物理学 2018-07-04 Kyungtaek Jun , Dongwook Kim

Multi-spectral computed tomography is an emerging technology for the non-destructive identification of object materials and the study of their physical properties. Applications of this technology can be found in various scientific and…

计算机视觉与模式识别 · 计算机科学 2018-10-30 Christian Kehl , Wail Mustafa , Jan Kehres , Anders Bjorholm Dahl , Ulrik Lund Olsen

Due to the merit of establishing volumetric data, X-ray computed tomography (XCT) is increasingly used as a non-destructive evaluation technique in the quality control of advanced manufactured parts with complex non-line-of-sight features.…

Multi-organ segmentation in whole-body computed tomography (CT) is a constant pre-processing step which finds its application in organ-specific image retrieval, radiotherapy planning, and interventional image analysis. We address this…

计算机视觉与模式识别 · 计算机科学 2019-08-15 Fernando Navarro , Suprosanna Shit , Ivan Ezhov , Johannes Paetzold , Andrei Gafita , Jan Peeken , Stephanie Combs , Bjoern Menze

Today, Multi-View Stereo techniques are able to reconstruct robust and detailed 3D models, especially when starting from high-resolution images. However, there are cases in which the resolution of input images is relatively low, for…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Eugenio Lomurno , Andrea Romanoni , Matteo Matteucci

Computed Tomography (CT) reconstruction of objects with cylindrical symmetry can be performed with a single projection. When the measured rays are parallel, and the axis of symmetry is perpendicular to the optical axis, the data can be…

医学物理 · 物理学 2024-10-15 Kyle M. Champley , Ibrahim Oksuz , Matthew G. Bisbee , Joseph W. Tringe , Brian Maddox

Recent studies have focused on utilizing multi-modal data to develop robust models for facial Action Unit (AU) detection. However, the heterogeneity of multi-modal data poses challenges in learning effective representations. One such…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Xiang Zhang , Huiyuan Yang , Taoyue Wang , Xiaotian Li , Lijun Yin

The present paper develops a general methodology for the morphological segmentation of hyperspectral images, i.e., with an important number of channels. This approach, based on watershed, is composed of a spectral classification to obtain…

图像与视频处理 · 电气工程与系统科学 2020-10-05 Guillaume Noyel , Jesus Angulo , Dominique Jeulin

Multi-material decomposition (MMD) enables quantitative reconstruction of tissue compositions in the human body, supporting a wide range of clinical applications. However, traditional MMD typically requires spectral CT scanners and…

计算机视觉与模式识别 · 计算机科学 2025-05-14 Qing Wu , Hongjiang Wei , Jingyi Yu , S. Kevin Zhou , Yuyao Zhang