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Dynamic reconstruction of deformable tissues in endoscopic video is a key technology for robot-assisted surgery. Recent reconstruction methods based on neural radiance fields (NeRFs) have achieved remarkable results in the reconstruction of…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Weixing Xie , Junfeng Yao , Xianpeng Cao , Qiqin Lin , Zerui Tang , Xiao Dong , Xiaohu Guo

In-air acoustic imaging systems demand beamforming techniques that offer a high dynamic range and spatial resolution while also remaining robust. Conventional Delay-and-Sum (DAS) beamforming fails to meet these quality demands due to high…

信号处理 · 电气工程与系统科学 2026-01-28 Wouter Jansen , Walter Daems , Jan Steckel

Purpose: Image reconstruction in challenging scenarios requires accurate characterisations of coil sensitivity profiles, local off-resonances (B0) and effective encoding fields. Reconstruction methods utilising all of this information rely…

图像与视频处理 · 电气工程与系统科学 2026-04-13 Samuel Bianchi , Klaas P. Pruessmann

With the emergence of low-cost robotic systems, such as unmanned aerial vehicle, the importance of embedded high-performance image processing has increased. For a long time, FPGAs were the only processing hardware that were capable of…

计算机视觉与模式识别 · 计算机科学 2021-06-16 Boitumelo Ruf , Jonas Mohrs , Martin Weinmann , Stefan Hinz , Jürgen Beyerer

Ultrasound (US) imaging is widely used for anatomical structure inspection in clinical diagnosis. The training of new sonographers and deep learning based algorithms for US image analysis usually requires a large amount of data. However,…

图像与视频处理 · 电气工程与系统科学 2022-05-26 Jiamin Liang , Xin Yang , Yuhao Huang , Haoming Li , Shuangchi He , Xindi Hu , Zejian Chen , Wufeng Xue , Jun Cheng , Dong Ni

Side-scan sonar (SSS) is a lightweight acoustic sensor that is frequently deployed on autonomous underwater vehicles (AUVs) to provide high-resolution seafloor images. However, using side-scan images to perform simultaneous localization and…

机器人学 · 计算机科学 2023-12-22 Jun Zhang , Yiping Xie , Li Ling , John Folkesson

Unmanned Aerial Vehicles (UAVs) have gained significant popularity in scene reconstruction. This paper presents SOAR, a LiDAR-Visual heterogeneous multi-UAV system specifically designed for fast autonomous reconstruction of complex…

机器人学 · 计算机科学 2024-09-05 Mingjie Zhang , Chen Feng , Zengzhi Li , Guiyong Zheng , Yiming Luo , Zhu Wang , Jinni Zhou , Shaojie Shen , Boyu Zhou

Synthetic Aperture Radar (SAR) utilizes the movement of the radar antenna over a specific area of interest to achieve higher spatial resolution imaging. In this paper, we aim to investigate the realization of SAR imaging for a stationary…

信息检索 · 计算机科学 2024-09-19 Yifan Sun , Rang Liu , Zhiping Lu , Honghao Luo , Ming Li , Qian Liu

We propose a weakly-supervised framework for the semantic segmentation of circular-scan synthetic-aperture-sonar (CSAS) imagery. The first part of our framework is trained in a supervised manner, on image-level labels, to uncover a set of…

Compressed sensing (CS) is an innovative technique allowing to represent signals through a small number of their linear projections. In this paper we address the application of CS to the scenario of progressive acquisition of 2D visual…

信息论 · 计算机科学 2014-03-06 Giulio Coluccia , Enrico Magli

With the emergence of Gaussian Splats, recent efforts have focused on large-scale scene geometric reconstruction. However, most of these efforts either concentrate on memory reduction or spatial space division, neglecting information in the…

计算机视觉与模式识别 · 计算机科学 2024-05-29 Butian Xiong , Xiaoyu Ye , Tze Ho Elden Tse , Kai Han , Shuguang Cui , Zhen Li

Coded aperture snapshot spectral imaging (CASSI) makes it possible to recover 3D hyperspectral data from a single 2D image. However, the reconstruction problem is severely underdetermined and efforts to improve the compression ratio…

光学 · 物理学 2022-08-03 Jiri Hlubucek , Jakub Lukes , Jan Vaclavik , Karel Zidek

Recent work has achieved dense 3D reconstruction with wide-aperture imaging sonar using a stereo pair of orthogonally oriented sonars. This allows each sonar to observe a spatial dimension that the other is missing, without requiring any…

机器人学 · 计算机科学 2021-04-08 John McConnell , Brendan Englot

Photoacoustic (PA) imaging has been widely applied in both preclinical and clinical applications. With a significantly increasing number of data acquisition channels, fast and high-quality image reconstruction for real-time PA imaging is an…

医学物理 · 物理学 2024-08-20 Zijian Gao , Yuting Shen , Daohuai Jiang , Fengyu Liu , Feng Gao , Fei Gao

High-fidelity reconstruction of deformable tissues from endoscopic videos remains challenging due to the limitations of existing methods in capturing subtle color variations and modeling global deformations. While 3D Gaussian Splatting…

计算机视觉与模式识别 · 计算机科学 2025-08-27 Qun Ji , Peng Li , Mingqiang Wei

Single-pixel imaging is a novel imaging scheme that has gained popularity due to its huge computational gain and potential for a low-cost alternative to imaging beyond the visible spectrum. The traditional reconstruction methods struggle to…

计算机视觉与模式识别 · 计算机科学 2021-07-06 Nazmul Karim , Nazanin Rahnavard

Recently, learning-based image compression methods that utilize convolutional neural layers have been developed rapidly. Rescaling modules such as batch normalization which are often used in convolutional neural networks do not operate…

图像与视频处理 · 电气工程与系统科学 2022-08-08 Chajin Shin , Hyeongmin Lee , Hanbin Son , Sangjin Lee , Dogyoon Lee , Sangyoun Lee

Research ultrasound platforms have enabled many next-generation imaging sequences but have lacked realtime navigation capabilities for emerging 2D arrays such as row-column arrays (RCAs). We present an open-source, GPU-accelerated…

图像与视频处理 · 电气工程与系统科学 2025-12-15 Randy Palamar , Darren Dahunsi , Tyler Henry , Mohammad Rahim Sobhani , Roger Zemp

Most ultrasound (US) imaging techniques use spatially-constant speed-of-sound (SoS) values for beamforming. Having a discrepancy between the actual and used SoS value leads to aberration artifacts, e.g., reducing the image resolution, which…

医学物理 · 物理学 2022-08-18 Can Deniz Bezek , Mert Bilgin , Lin Zhang , Orcun Goksel

In recent years, there have been several advancements in the task of image super-resolution using the state of the art Deep Learning-based architectures. Many super-resolution-based techniques previously published, require high-end and…

图像与视频处理 · 电气工程与系统科学 2022-04-12 Koushik Sivarama Krishnan , Karthik Sivarama Krishnan