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Low-overlap aerial imagery poses significant challenges to traditional photogrammetric methods, which rely heavily on high image overlap to produce accurate and complete mapping products. In this study, we propose a novel workflow based on…

计算机视觉与模式识别 · 计算机科学 2025-03-07 Jiageng Zhong , Qi Zhou , Ming Li , Armin Gruen , Xuan Liao

A common problem that arises in radar imaging systems, especially those mounted on mobile platforms, is antenna position ambiguity. Approaches to resolve this ambiguity and correct position errors are generally known as radar autofocus.…

计算机视觉与模式识别 · 计算机科学 2018-05-10 Hassan Mansour , Dehong Liu , Ulugbek S. Kamilov , Petros T. Boufounos

Dual-function radar communications (DFRC) systems have recently been proposed to enable the coexistence of radar and wireless communications, which in turn alleviates the increased spectrum congestion crisis. In this paper, we consider the…

信号处理 · 电气工程与系统科学 2018-08-16 Xiangrong Wang , Aboulnasr Hassanien , Moeness Amin

Multi-baseline synthetic aperture radar interferometry (MB-InSAR), capable of mapping 3D surface model with high precision, is able to overcome the ill-posed problem in the single-baseline InSAR by use of the baseline diversity. Single pass…

图像与视频处理 · 电气工程与系统科学 2023-06-21 Fengming Hu , Feng Xu , Xiaolan Qiu , Chibiao Ding , Yaqiu Jin

We introduce a method for novel view synthesis given only a single wide-baseline stereo image pair. In this challenging regime, 3D scene points are regularly observed only once, requiring prior-based reconstruction of scene geometry and…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Yilun Du , Cameron Smith , Ayush Tewari , Vincent Sitzmann

Light detection and ranging (Lidar) single-photon devices capture range and intensity information from a 3D scene. This modality enables long range 3D reconstruction with high range precision and low laser power. A multispectral…

信号处理 · 电气工程与系统科学 2019-09-20 Julián Tachella , Yoann Altmann , Miguel Márquez , Henry Arguello-Fuentes , Jean-Yves Tourneret , Stephen McLaughlin

While the keypoint-based maps created by sparse monocular simultaneous localisation and mapping (SLAM) systems are useful for camera tracking, dense 3D reconstructions may be desired for many robotic tasks. Solutions involving depth cameras…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Tristan Laidlow , Jan Czarnowski , Stefan Leutenegger

Estimating scene geometry from data obtained with cost-effective sensors is key for robots and self-driving cars. In this paper, we study the problem of predicting dense depth from a single RGB image (monodepth) with optional sparse…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Vitor Guizilini , Rares Ambrus , Wolfram Burgard , Adrien Gaidon

Radio synthesis imaging is dependent upon deconvolution algorithms to counteract the sparse sampling of the Fourier plane. These deconvolution algorithms find an estimate of the true sky brightness from the necessarily incomplete sampled…

天体物理学 · 物理学 2009-11-13 T. J. Cornwell

We demonstrate single-atom trapping in two-dimensional arrays of microtraps with arbitrary geometries. We generate the arrays using a Spatial Light Modulator (SLM), with which we imprint an appropriate phase pattern on an optical dipole…

This paper proposes Sparse View Synthesis. This is a view synthesis problem where the number of reference views is limited, and the baseline between target and reference view is significant. Under these conditions, current radiance field…

计算机视觉与模式识别 · 计算机科学 2022-11-15 Violeta Menéndez González , Andrew Gilbert , Graeme Phillipson , Stephen Jolly , Simon Hadfield

We propose a new antenna selection scheme for a massive MIMO system with a single user terminal and a base station with a large number of antennas. We consider a practical scenario where there is a realistic correlation among the antennas…

信息论 · 计算机科学 2015-07-09 De Mi , Mehrdad Dianati , Sami Muhaidat , Yan Chen

Mono-static sensing operations in ISAC perform joint beamforming between transmitter and receiver. However, in contrast to pure radar systems, ISAC requires to fulfill communications tasks and to retain the corresponding design constraints…

信号处理 · 电气工程与系统科学 2024-10-28 Alexander Felix , Silvio Mandelli , Marcus Henninger , Stephan ten Brink

We propose a novel method to accurately reconstruct a set of images representing a single scene from few linear multi-view measurements. Each observed image is modeled as the sum of a background image and a foreground one. The background…

计算机视觉与模式识别 · 计算机科学 2013-09-19 Gilles Puy , Pierre Vandergheynst

This paper addresses the problem of single snapshot Direction-of-Arrival (DOA) estimation, which is of great importance in a wide-range of applications including automotive radar. A popular approach to achieving high angular resolution when…

信号处理 · 电气工程与系统科学 2024-03-12 Yinyan Bu , Robin Rajamäki , Anand Dabak , Rajan Narasimha , Anil Mani , Piya Pal

Millimeter wave multiple-input multiple-output (MIMO) communication systems must operate over sparse wireless links and will require large antenna arrays to provide high throughput. To achieve sufficient array gains, these systems must…

信号处理 · 电气工程与系统科学 2019-04-17 Wei Zhang , Taejoon Kim , David J. Love

Weather radar data synthesis can fill in data for areas where ground observations are missing. Existing methods often employ reconstruction-based approaches with MSE loss to reconstruct radar data from satellite observation. However, such…

图像与视频处理 · 电气工程与系统科学 2024-11-12 Xuming He , Zhiwang Zhou , Wenlong Zhang , Xiangyu Zhao , Hao Chen , Shiqi Chen , Lei Bai

In this paper, we present a monocular Simultaneous Localization and Mapping (SLAM) algorithm using high-level object and plane landmarks. The built map is denser, more compact and semantic meaningful compared to feature point based SLAM. We…

机器人学 · 计算机科学 2019-07-01 Shichao Yang , Sebastian Scherer

Sparse sensor arrays offer a cost effective alternative to uniform arrays. By utilizing the co-array, a sparse array can match the performance of a filled array, despite having significantly fewer sensors. However, even sparse arrays can…

信号处理 · 电气工程与系统科学 2018-11-14 Robin Rajamäki , Visa Koivunen

Multi-view Synthetic Aperture Radar (SAR) imaging can effectively enhance the performance of tasks such as automatic target recognition and image information fusion. Unmanned aerial vehicles (UAVs) have the advantages of flexible deployment…

系统与控制 · 电气工程与系统科学 2025-05-23 Deyu Song , Xiangyin Zhang , Zipei Yu , Kaiyu Qin