Results 61 to 70 of about 46,952 (245)

On Correlating Sonar Images

Robotics: Science and Systems I, 2005
This paper demonstrates that sonar images correlate badly because target geometry and image fringes correlate in different coordinate systems. It is shown that if the receiver is a line array, all point objects have the same image in a coordinate system with axes of range and the sine of target bearing (the (r, s) coordinate system).
Richard J. Rikoski, J. Tory Cobb, Daniel C. Brown   +2 more
openaire   +2 more sources

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

Journal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall, Ori Lifschitz, Tali Treibitz   +2 more
wiley   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

SoNaR-1. Corpus van 1 miljoen woorden verrijkt met diverse semantische annotaties

, 2012
Item does not contain fulltextHet SoNaR-project is een project dat gefinancierd wordt in het kader van het Nederlands-Vlaams STEVIN-programma. Het project beoogt de aanleg van een groot corpus (minimaal 500 miljoen woorden) geschreven Nederlands.
et al., Oostdijk, N.H.J.
core   +1 more source

An Adaptive Image-stitching Algorithm for an Underwater Monitoring System

International Journal of Advanced Robotic Systems, 2014
Against the narrow range of sonar images for underwater monitoring, an adaptive sonar image-stitching algorithm is proposed in this paper. Compared with conventional sonar image-stitching algorithms, this algorithm can be applied to stitch sonar images ...
Li Hengyu, Luo Jun, Chaojiong Huang, Yi Yang, Shaorong Xie   +4 more
doaj   +1 more source

Research and analysis on military strength demand of dipping sonar on-call submarine searching based on submarine evasion [PDF]

Zhihui kongzhi yu fangzhen
Based on the actual process of dipping sonar in on-call submarine searching, combined with the classic extended spiral search method, a multi machine dipping sonar on-call submarine searching model was established.
ZHANG Feifei, ZHAO Shendong, LI Ruihong, LIU Pengfei
doaj   +1 more source

Active sonar performance modelling for Doppler-sensitive pulses

, 2021
Accurate sonar performance modelling is essential to predict likely detection ranges that can be obtained by employing active anti-submarine warfare sonars. Reverberation forms an important source of interference for active sonar performance, the effects
Prior, M.K., Colin, M., Hartstra, I.E.
core  

ADAPT: An Autonomous Forklift for Construction Site Operation

Journal of Field Robotics, EarlyView.
ABSTRACT Efficient material logistics are critical in controlling costs and schedules in the construction industry. However, manual material handling remains prone to inefficiencies, delays, and safety risks. Autonomous forklifts offer a solution to streamline on‐site logistics, reducing reliance on human operators and mitigating labor shortages.
Johannes Huemer, Markus Murschitz, Matthias Schörghuber, Lukas Reisinger, Thomas Kadiofsky, Christoph Weidinger, Mario Niedermeyer, Benedikt Widy, Marcel Zeilinger, Csaba Beleznai, Tobias Glück, Andreas Kugi, Patrik Zips   +12 more
wiley   +1 more source

SoNaR Nieuw Media Corpus

, 2014
Item does not contain fulltext[ISBN: 9789491325038] Het SoNaR-corpus is een tekstcorpus dat bestaat uit twee delen, nl. SoNaR-500 en SoNaR-1. SONAR-500 bevat meer dan 500 miljoen woorden tekst afkomstig uit uiteenlopende domeinen en genres.
Heuvel, H. van den, Reynaert, M., Reynaert, Martin, Sanders, E.P., De Clercq, Orphée, Clercq, O. De, Hoste, Veronique, van den Heuvel, Henk, Oostdijk, Nelleke, Hoste, V., Sanders, Erik, Oostdijk, N.H.J.   +11 more
core