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A Rotating Modulator (RM) is one of a class of techniques for indirect imaging of an object scene by modulation and detection of incident photons. Comparison of the RM to more common imaging techniques, the Rotating Modulation Collimator…

天体物理仪器与方法 · 物理学 2010-10-14 B. Budden , G. L. Case , M. L. Cherry

The most common technique for generating B-mode ultrasound (US) images is delay and sum (DAS) beamforming, where the signals received at the transducer array are sampled before an appropriate delay is applied. This necessitates sampling…

信号处理 · 电气工程与系统科学 2021-03-03 Alon Mamistvalov , Yonina C. Eldar

In this work we present a novel method for reconstructing 3D surfaces using a multi-beam imaging sonar. We integrate the intensities measured by the sonar from different viewpoints for fixed cell positions in a 3D grid. For each cell we…

机器人学 · 计算机科学 2022-06-08 Sascha Arnold , Bilal Wehbe

The integration of sensing and communication (ISAC) is an essential function of future wireless systems. Due to its large available bandwidth, millimeter-wave (mmWave) ISAC systems are able to achieve high sensing accuracy. In this paper,…

信号处理 · 电气工程与系统科学 2026-02-06 Ziqing Xing , Zhaoyang Zhang , Xin Tong , Zhaohui Yang , Chongwen Huang

This paper introduces an innovative approach for signal reconstruction using data acquired through multi-input-multi-output (MIMO) sampling. First, we show that it is possible to perfectly reconstruct a set of periodic band-limited signals…

信息论 · 计算机科学 2024-09-09 Dong Cheng , Xiaoxiao Hu , Kit Ian Kou

Structured illumination microscopy (SIM) is a very important super-resolution microscopy technique, which provides high speed super-resolution with about two-fold spatial resolution enhancement. Several attempts aimed at improving the…

计算机视觉与模式识别 · 计算机科学 2016-02-23 Amit Lal , Chunyan Shan , Peng Xi

Positron Emission Mammography (PEM) imaging systems with the ability in detection of millimeter-sized tumors were developed in recent years. And some of them have been well used in clinical applications. In consideration of biopsy…

We introduce a mathematical model for ultrasound modulated optical tomography and present a simple reconstruction scheme for recovering the spatially varying optical absorption coefficient from scanning measurements with narrowly focused…

偏微分方程分析 · 数学 2010-04-12 Moritz Allmaras , Wolfgang Bangerth

Ultrasound imaging, despite its widespread use in medicine, often suffers from various sources of noise and artifacts that impact the signal-to-noise ratio and overall image quality. Enhancing ultrasound images requires a delicate balance…

计算机视觉与模式识别 · 计算机科学 2024-09-18 Yuxin Zhang , Clément Huneau , Jérôme Idier , Diana Mateus

Purpose: To develop a truly calibrationless reconstruction method that derives ESPIRiT maps from uniformly-undersampled multi-channel MR data by deep learning. Methods: ESPIRiT, one commonly used parallel imaging reconstruction technique,…

信号处理 · 电气工程与系统科学 2022-10-28 Junhao Zhang , Zheyuan Yi , Yujiao Zhao , Linfang Xiao , Jiahao Hu , Christopher Man , Vick Lau , Shi Su , Fei Chen , Alex T. L. Leong , Ed X. Wu

We introduce the learned simultaneous iterative reconstruction technique (SIRT) for tomographic reconstruction. The learned SIRT algorithm is a deep learning based reconstruction method combining model knowledge with a learned component.…

图像与视频处理 · 电气工程与系统科学 2019-08-29 Roeland J. Dilz , Lukas Schröder , Nikita Moriakov , Jan-Jakob Sonke , Jonas Teuwen

Hyperspectral neutron computed tomography enables 3D non-destructive imaging of the spectral characteristics of materials. In traditional hyperspectral reconstruction, the data for each neutron wavelength bin is reconstructed separately.…

Purpose: Although recent deep energy-based generative models (EBMs) have shown encouraging results in many image generation tasks, how to take advantage of the self-adversarial cogitation in deep EBMs to boost the performance of Magnetic…

图像与视频处理 · 电气工程与系统科学 2021-09-10 Yu Guan , Zongjiang Tu , Shanshan Wang , Qiegen Liu , Yuhao Wang , Dong Liang

We propose a model-based deep learning architecture for the reconstruction of highly accelerated diffusion magnetic resonance imaging (MRI) that enables high resolution imaging. The proposed reconstruction jointly recovers all the diffusion…

图像与视频处理 · 电气工程与系统科学 2020-01-24 Merry P. Mani , Hemant K. Aggarwal , Sanjay Ghosh , Mathews Jacob

While model-based reconstruction methods have been successfully applied to flat-panel cone-beam CT (FP-CBCT) systems, typical implementations ignore both spatial correlations in the projection data as well as system blurs due to the…

医学物理 · 物理学 2017-06-20 Steven Tilley , Jeffrey H. Siewerdsen , J. Webster Stayman

We present a neural-field-based large-scale reconstruction system that fuses lidar and vision data to generate high-quality reconstructions that are geometrically accurate and capture photo-realistic textures. This system adapts the…

机器人学 · 计算机科学 2025-02-18 Yifu Tao , Yash Bhalgat , Lanke Frank Tarimo Fu , Matias Mattamala , Nived Chebrolu , Maurice Fallon

Intelligent reflecting surface (IRS) technology has recently attracted a significant interest in non-light-of-sight radar remote sensing. Prior works have largely focused on designing single IRS beamformers for this problem. For the first…

信息论 · 计算机科学 2023-03-14 Zahra Esmaeilbeig , Arian Eamaz , Kumar Vijay Mishra , Mojtaba Soltanalian

An efficient and accurate image reconstruction algorithm for ultrasound tomography (UST) is described and demonstrated, which can recover accurate sound speed distribution from acoustic time series measurements made in soft tissue. The…

数值分析 · 数学 2021-11-17 Ashkan Javaherian , Ben Cox

Purpose: To introduce a novel deep learning based approach for fast and high-quality dynamic multi-coil MR reconstruction by learning a complementary time-frequency domain network that exploits spatio-temporal correlations simultaneously…

图像与视频处理 · 电气工程与系统科学 2021-06-21 Chen Qin , Jinming Duan , Kerstin Hammernik , Jo Schlemper , Thomas Küstner , René Botnar , Claudia Prieto , Anthony N. Price , Joseph V. Hajnal , Daniel Rueckert

Ultrafast ultrasound localization microscopy (ULM), which has shown promising results in microvascular imaging, overcomes the typical trade-off between resolution and penetration depth. Combining ultrasound contrast agents and high frame…

信号处理 · 电气工程与系统科学 2024-07-02 A. N. Madhavanunni , Niya Mariam Benoy , Mahesh Raveendranatha Panicker , Himanshu Shekhar