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Wireless ultrasound (US) systems that produce high-quality images can improve current clinical diagnosis capabilities by making the imaging process much more efficient, affordable, and accessible to users. The most common technique for…

信号处理 · 电气工程与系统科学 2020-10-27 Alon Mamistvalov , Yonina C. Eldar

Diffusion models have emerged as a powerful foundation model for visual generations. With an appropriate sampling process, it can effectively serve as a generative prior for solving general inverse problems. Current posterior sampling-based…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Shijie Zhou , Huaisheng Zhu , Rohan Sharma , Jiayi Chen , Ruiyi Zhang , Kaiyi Ji , Changyou Chen

This paper tackles the optimization of the point spread function (PSF) of unmanned aerial vehicle (UAV)-borne multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) tomography systems. A swarm of UAV-borne SAR systems is…

信号处理 · 电气工程与系统科学 2026-05-27 Pouya Fakharizadeh , Mohamed-Amine Lahmeri , Gerhard Krieger , Robert Schober

Accurate camera pose estimation result is essential for visual SLAM (VSLAM). This paper presents a novel pose correction method to improve the accuracy of the VSLAM system. Firstly, the relationship between the camera pose estimation error…

计算机视觉与模式识别 · 计算机科学 2019-08-27 Zhaobing Kang , Wei Zou , Zheng Zhu

Many recent loss functions in deep metric learning are expressed with logarithmic and exponential forms, and they involve margin and scale as essential hyper-parameters. Since each data class has an intrinsic characteristic, several…

音频与语音处理 · 电气工程与系统科学 2023-05-24 Myunghun Jung , Hoirin Kim

Dynamic metasurface antennas (DMAs) are an emerging technology for next-generation wireless base stations, distinguished by hybrid analog/digital beamforming capabilities with low hardware complexity. However, the intrinsic coupling between…

应用物理 · 物理学 2025-07-11 Hugo Prod'homme , Philipp del Hougne

The ability to extend the field of view of laparoscopy images can help the surgeons to obtain a better understanding of the anatomical context. However, due to tissue deformation, complex camera motion and significant three-dimensional (3D)…

计算机视觉与模式识别 · 计算机科学 2021-03-15 Haoyin Zhou , Jagadeesan Jayender

Passive acoustic mapping (PAM) is a promising tool for monitoring acoustic cavitation activities in the applications of ultrasound therapy. Data-adaptive beamformers for PAM have better image quality compared to the time exposure acoustics…

人工智能 · 计算机科学 2024-12-04 Yi Zeng , Jinwei Li , Hui Zhu , Shukuan Lu , Jianfeng Li , Xiran Cai

Photo-acoustic spectroscopy (PAS) is one of the most sensitive non-destructive analysis techniques for gases, fluids and solids. It can operate background-free at any wavelength and is applicable to microscopic and even non-transparent…

Photoacoustic tomography seeks to reconstruct an acoustic initial pressure distribution from the measurement of the ultrasound waveforms. Conventional methods assume a-prior knowledge of the sound speed distribution, which practically is…

图像与视频处理 · 电气工程与系统科学 2019-09-16 Hongming Shan , Christopher Wiedeman , Ge Wang , Yang Yang

Ultrasound imaging is widely used in noninvasive medical diagnostics due to its efficiency, portability, and avoidance of ionizing radiation. However, its utility is limited by the quality of the signal. Signal-dependent speckle noise,…

图像与视频处理 · 电气工程与系统科学 2026-02-10 Soumee Guha , Scott T. Acton

Score Distillation Sampling (SDS) is a recent but already widely popular method that relies on an image diffusion model to control optimization problems using text prompts. In this paper, we conduct an in-depth analysis of the SDS loss…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Thiemo Alldieck , Nikos Kolotouros , Cristian Sminchisescu

Magnetic resonance imaging (MRI) provides high spatial resolution and excellent soft-tissue contrast without using harmful ionising radiation. Dynamic MRI is an essential tool for interventions to visualise movements or changes of the…

In-scanner motion degrades the quality of magnetic resonance imaging (MRI) thereby reducing its utility in the detection of clinically relevant abnormalities. We introduce a deep learning-based MRI artifact reduction model (DMAR) to…

图像与视频处理 · 电气工程与系统科学 2020-11-03 Yijun Zhao , Jacek Ossowski , Xuming Wang , Shangjin Li , Orrin Devinsky , Samantha P. Martin , Heath R. Pardoe

With the rapid advances in programmable materials, reconfigurable intelligent surfaces (RIS) have become a pivotal technology for future wireless communications. The simultaneous transmitting and reflecting reconfigurable intelligent…

机器学习 · 计算机科学 2025-12-02 Yujie Huang , Haibin Wan , Xiangcheng Li , Tuanfa Qin , Yun Li , Jun Li , Wen Chen

We use the beam model of Doppler backscattering (DBS), which was previously derived from beam tracing and the reciprocity theorem, to shed light on mismatch attenuation. This attenuation of the backscattered signal occurs when the…

Multiplicative noise widely exists in radar images, medical images and other important fields' images. Compared to normal noises, multiplicative noise has a generally stronger effect on the visual expression of images. Aiming at the…

图像与视频处理 · 电气工程与系统科学 2026-04-14 Xiao Siyao , Huang Libing , Zhang Shunsheng

We introduce Delta Denoising Score (DDS), a novel scoring function for text-based image editing that guides minimal modifications of an input image towards the content described in a target prompt. DDS leverages the rich generative prior of…

计算机视觉与模式识别 · 计算机科学 2023-04-17 Amir Hertz , Kfir Aberman , Daniel Cohen-Or

In this research, a novel robust change detection approach is presented for imbalanced multi-temporal synthetic aperture radar (SAR) image based on deep learning. Our main contribution is to develop a novel method for generating difference…

计算机视觉与模式识别 · 计算机科学 2020-03-05 Xinzheng Zhang , Hang Su , Ce Zhang , Peter M. Atkinson , Xiaoheng Tan , Xiaoping Zeng , Xin Jian

In this paper, we focus on the sum-rate optimization in a multi-user millimeter-wave (mmWave) system with distributed intelligent reflecting surfaces (D-IRSs), where a base station (BS) communicates with users via multiple IRSs. The BS…

信号处理 · 电气工程与系统科学 2021-01-22 Yue Xiu , Wei Sun , Jiao Wu , Guan Gui , Ning Wei , Zhongpei Zhang
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