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In geographic information systems and in the production of digital maps for small devices with restricted computational resources one often wants to round coordinates to a rougher grid. This removes unnecessary detail and reduces space…

计算几何 · 计算机科学 2016-09-01 Andre Löffler , Thomas C. van Dijk , Alexander Wolff

Estimating pose from given 3D correspondences, including point-to-point, point-to-line and point-to-plane correspondences, is a fundamental task in computer vision with many applications. We present a complete solution for this task,…

计算机视觉与模式识别 · 计算机科学 2019-04-05 Lipu Zhou , Shengze Wang , Jiamin Ye , Michael Kaess

In urban environments, global navigation satellite system (GNSS) positioning is often compromised by signal blockages and multipath effects caused by buildings, leading to significant positioning errors. To address this issue, this study…

信号处理 · 电气工程与系统科学 2025-07-18 Sanghyun Kim , Jiwon Seo

This paper reports the design of a high-accuracy spatial location estimation method using ultrasound waves by exploiting the fixed geometry of the transmitters. Assuming an isosceles triangle antenna configuration, where three antennas are…

信号处理 · 电气工程与系统科学 2021-10-04 Mohammed H. AlSharif , Ahmed Douik , Mohanad Ahmed , Tareq Y. Al-Naffouri , Babak Hassibi

We show that for one-shot problems - problems where a processor executes a single operation-execution - timing constraints can be captured by conditions on the relation between original outputs and supplementary snapshots. In addition to…

分布式、并行与集群计算 · 计算机科学 2014-08-18 Eli Gafni

In the fast developing countries it is hard to trace new buildings construction or old structures destruction and, as a result, to keep the up-to-date cadastre maps. Moreover, due to the complexity of urban regions or inconsistency of data…

计算机视觉与模式识别 · 计算机科学 2020-07-27 Stefano Zorzi , Ksenia Bittner , Friedrich Fraundorfer

The paper contains several theoretical results related to the weighted nonlinear least-squares problem for low-rank signal estimation, which can be considered as a Hankel structured low-rank approximation problem. A parameterization of the…

数值分析 · 数学 2022-07-29 Nikita Zvonarev , Nina Golyandina

We consider the problem of estimating the 3D orientation of a user, using the downlink mmWave signals received from multiple base stations. We show that the received signals from several base stations, having known positions, can be used to…

信号处理 · 电气工程与系统科学 2021-01-06 Mohammad A. Nazari , Gonzalo Seco-Granados , Pontus Johannisson , Henk Wymeersch

The acquisition of the signal from the satellite based positioning systems, such as GPS, Galileo, and Compass, encounters challenges in the urban streets, indoor. For improving the acquisition performance, the data accumulation is usually…

信息论 · 计算机科学 2017-04-19 Pengda Wong

Hyperspectral compressive imaging takes advantage of compressive sensing theory to achieve coded aperture snapshot measurement without temporal scanning, and the entire three-dimensional spatial-spectral data is captured by a…

图像与视频处理 · 电气工程与系统科学 2021-08-03 Yubao Sun , Ying Yang , Qingshan Liu , Mohan Kankanhalli

It is a big problem that a model of deep learning for a picking robot needs many labeled images. Operating costs of retraining a model becomes very expensive because the object shape of a product or a part often is changed in a factory. It…

机器人学 · 计算机科学 2020-03-13 Yasuto Yokota , Kanata Suzuki , Yuzi Kanazawa , Tomoyoshi Takebayashi

We propose a new approach to linear ill-posed inverse problems. Our algorithm alternates between enforcing two constraints: the measurements and the statistical correlation structure in some transformed space. We use a non-linear multiscale…

计算工程、金融与科学 · 计算机科学 2018-12-04 Ivan Dokmanić , Joan Bruna , Stéphane Mallat , Maarten de Hoop

With the recent development of technology, wireless sensor networks (WSN) are becoming an important part of many applications. Knowing the exact location of each sensor in the network is very important issue. Therefore, the localization…

网络与互联网体系结构 · 计算机科学 2016-06-27 Biljana Risteska Stojkoska , Vesna Kirandziska

We investigate methods for determining if a planar surface contains geometric deviations (e.g., protrusions, objects, divots, or cliffs) using only an instantaneous measurement from a miniature optical time-of-flight sensor. The key to our…

机器人学 · 计算机科学 2024-08-08 Carter Sifferman , William Sun , Mohit Gupta , Michael Gleicher

A Global Navigation Satellite System (GNSS) uses a constellation of satellites around the earth for accurate navigation, timing, and positioning. Natural phenomena like space weather introduce irregularities in the Earth's ionosphere,…

This paper introduces an iterative scheme for acoustic model inversion where the notion of proximity of two traces is not the usual least-squares distance, but instead involves registration as in image processing. Observed data are matched…

最优化与控制 · 数学 2013-04-22 Hyoungsu Baek , Henri Calandra , Laurent Demanet

Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications. When 2D-3D correspondences can be obtained reliably, perspective-n-point solvers can…

计算机视觉与模式识别 · 计算机科学 2019-06-19 Dylan Campbell , Lars Petersson , Laurent Kneip , Hongdong Li , Stephen Gould

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

On the off-the-shelf navigational assistance devices, the localization precision is limited to the signal error of global navigation satellite system (GNSS). During travelling outdoors, the inaccurately localization perplexes visually…

计算机视觉与模式识别 · 计算机科学 2019-05-15 Ruiqi Cheng , Kaiwei Wang , Longqing Lin , Kailun Yang

In this paper we present new algorithms and analysis for the linear inverse sensor placement and scheduling problems over multiple time instances with power and communications constraints. The proposed algorithms, which deal directly with…

信息论 · 计算机科学 2018-02-14 Cristian Rusu , John Thompson , Neil M. Robertson