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We present an imaging technique particularly suited to the detection of a target embedded in a strongly scattering medium. Classical imaging techniques based on the Born approximation fail in this kind of configuration because of multiply…

经典物理 · 物理学 2009-08-21 Alexandre Aubry , Arnaud Derode

Interventional C-arm systems allow flexible 2-D imaging of a 3-D scene while being capable of cone beam computed tomography. Due to the flexible structure of the C-arm, the rotation speed is limited, increasing the acquisition time compared…

医学物理 · 物理学 2018-07-25 Alexander Preuhs , Michael Manhart , Andreas Maier

This work focuses on the persistent monitoring problem, where a set of targets moving based on an unknown model must be monitored by an autonomous mobile robot with a limited sensing range. To keep each target's position estimate as…

机器人学 · 计算机科学 2023-03-14 Yizhuo Wang , Yutong Wang , Yuhong Cao , Guillaume Sartoretti

We present a factor graph formulation and particle-based sum-product algorithm for robust localization and tracking in multipath-prone environments. The proposed sequential algorithm jointly estimates the mobile agent's position together…

信号处理 · 电气工程与系统科学 2025-04-16 Alexander Venus , Erik Leitinger , Stefan Tertinek , Florian Meyer , Klaus Witrisal

In current navigating platforms, the user's orientation is typically estimated based on the difference between two consecutive locations. In other words, the orientation cannot be identified until the second location is taken. This…

计算机视觉与模式识别 · 计算机科学 2023-11-23 Jihun Lee , SP Choi , Bumsoo Kang , Hyekyoung Seok , Hyoungseok Ahn , Sanghee Jung

This paper presents an experimental study of a path-tracking framework for autonomous vehicles in which the lateral control command is applied to a dynamic control point along the wheelbase. Instead of enforcing a fixed reference at either…

机器人学 · 计算机科学 2026-02-03 Alexandre Lombard , Florent Perronnet , Nicolas Gaud , Abdeljalil Abbas-Turki

We apply two different monotonically convergent optimization algorithms to the control of molecular rotational dynamics by laser pulses. This example represents a quantum control problem where the interaction of the system with the external…

量子物理 · 物理学 2015-06-15 M. Ndong , M. Lapert , C. Koch , D. Sugny

Object detection is a main task in computer vision. Template matching is the reference method for detecting objects with arbitrary templates. However, template matching computational complexity depends on the rotation accuracy, being a…

计算机视觉与模式识别 · 计算机科学 2024-11-07 Antonio Martinez-Sanchez , Ulrike Homberg , José María Almira , Harold Phelippeau

In this paper we propose a real-time and robust solution to large-scale multiple rotation averaging. Until recently, Multiple rotation averaging problem had been solved using conventional iterative optimization algorithms. Such methods…

计算机视觉与模式识别 · 计算机科学 2020-10-15 Joshua Thorpe , Ruwan Tennakoon , Alireza Bab-Hadiashar

Arbitrary-oriented objects widely appear in natural scenes, aerial photographs, remote sensing images, etc., thus arbitrary-oriented object detection has received considerable attention. Many current rotation detectors use plenty of anchors…

计算机视觉与模式识别 · 计算机科学 2020-12-16 Qi Ming , Zhiqiang Zhou , Lingjuan Miao , Hongwei Zhang , Linhao Li

We investigate the problem of a monostatic pulse-Doppler radar transceiver trying to detect targets, sparsely populated in the radar's unambiguous time-frequency region. Several past works employ compressed sensing (CS) algorithms to this…

信息论 · 计算机科学 2013-09-24 Omer Bar-Ilan , Yonina C. Eldar

Text in natural images is of arbitrary orientations, requiring detection in terms of oriented bounding boxes. Normally, a multi-oriented text detector often involves two key tasks: 1) text presence detection, which is a classification…

计算机视觉与模式识别 · 计算机科学 2018-03-15 Minghui Liao , Zhen Zhu , Baoguang Shi , Gui-song Xia , Xiang Bai

We demonstrate that, under orthographic projection and with a camera fixated on a point located on a rigid body, the rotation of that body can be analytically obtained by tracking only one other feature in the image. With some exceptions,…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Daniel Raviv , Juan D. Yepes , Eiki M. Martinson

Polarization plays an important role in various time-domain astrophysics to understand the magnetic fields, geometry, and environments of spatially unresolved variable sources. In this paper we present the results of laboratory and on-sky…

天体物理仪器与方法 · 物理学 2020-04-29 Manisha Shrestha , Iain A. Steele , Andrez S. Piascik , Helen Jermak , Robert J. Smith , Chris M. Copperwheat

We present an experiment investigating the rotational Doppler effect using a single trapped ion excited by two copropagating vortex laser beams. The setup isolates the azimuthal gradients of the fields, eliminating longitudinal and…

Augmented reality assembly guidance is essential for intelligent manufacturing and medical applications, requiring continuous measurement of the 6DoF poses of manipulated objects. Although current tracking methods have made significant…

计算机视觉与模式识别 · 计算机科学 2025-07-03 Jixiang Chen , Jing Chen , Kai Liu , Haochen Chang , Shanfeng Fu , Jian Yang

We report on an optimal binary strategy for angular displacement estimation. The measuring system is a modified Mach-Zehnder interferometer fed by a coherent state carrying orbital angular momentum, and two Dove prisms are embedded in two…

量子物理 · 物理学 2019-03-27 Jian-Dong Zhang , Zi-Jing Zhang , Long-Zhu Cen , Jun-Yan Hu , Yuan Zhao

Accurate maps are a prerequisite for virtually all mobile robot tasks. Most state-of-the-art maps assume a static world; therefore, dynamic objects are filtered out of the measurements. However, this division ignores movable but non-moving…

机器人学 · 计算机科学 2025-01-09 Matti Pekkanen , Francesco Verdoja , Ville Kyrki

We study the effect of pulsar rotation on timing of binary pulsars, with particular emphasis on the double pulsar system J0737-3039. Special relativistic aberration due to the orbital motion of pulsar changes both the longitude and…

天体物理学 · 物理学 2009-11-10 Roman R. Rafikov , Dong Lai

In this thesis a new approach for touch detection on optical multi-touch devices is proposed that exploits the fact that the camera images reveal not only the actual touch points but also objects above the screen such as the hand or arm of…

计算机视觉与模式识别 · 计算机科学 2013-01-09 Philipp Ewerling
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