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Wyszukujesz frazę "passive navigation" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Motion vector estimation of a stereovision camera with inertial sensors
Autorzy:
Pełczyński, P.
Ostrowski, B.
Rzeszotarski, D.
Powiązania:
https://bibliotekanauki.pl/articles/221704.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
passive navigation
motion vector
disparity
feature points
Opis:
The aim of the presented work was the development of a tracking algorithm for a stereoscopic camera setup equipped with an additional inertial sensor. The input of the algorithm consists of the image sequence, angular velocity and linear acceleration vectors measured by the inertial sensor. The main assumption of the project was fusion of data streams from both sources to obtain more accurate ego-motion estimation. An electronic module for recording the inertial sensor data was built. Inertial measurements allowed a coarse estimation of the image motion field that has reduced its search range by standard image-based methods. Continuous tracking of the camera motion has been achieved (including moments of image information loss). Results of the presented study are being implemented in a currently developed obstacle avoidance system for visually impaired pedestrians.
Źródło:
Metrology and Measurement Systems; 2012, 19, 1; 141-150
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation in large-format buildings based on RFID sensors and QR and AR markers
Autorzy:
Szymczyk, T.
Montusiewicz, J.
Gutek, D.
Powiązania:
https://bibliotekanauki.pl/articles/957976.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
navigation
augmented reality
passive location
mobile devices
Opis:
The authors address the problem of passive navigation in large buildings. Based on the example of several interconnected buildings housing departments of the Lublin University of Technology, as well as the conceptual navigation system, the paper presents one of the possible ways of leading the user from the entrance of the building to a particular room. An analysis of different types of users is made and different (best for them) ways of navigating the intricate corridors are proposed. Three ways of user localisation are suggested: RFID, AR and QR markers. A graph of connections between specific rooms was made and weights proposed, representing “the difficulty of covering a given distance”. In the process of navigation Dijkstra’s algorithm was used. The road is indicated as multimedia information: a voice-over or animated arrow showing the direction displayed on the smart phone screen with proprietary software installed. It is also possible to inform the user of the position of the location in which he currently is, based on the static information stored in the QR code.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 31; 263-273
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seamless navigation in GPS-denied environment using Lirhots real time north finding sensor
Autorzy:
Voro, Shlomi
Lavidor, Itamar
Powiązania:
https://bibliotekanauki.pl/articles/320663.pdf
Data publikacji:
2019
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
north finding
automated astro-navigation
automated stellar navigation systems
sky polarization
imaging sensor
navigation by natural network
autonomous passive sextant
Opis:
This paper presents a new type of north finding sensor. The passive optical sensor captures images of the sky at a high frame rate and analyzes them into a polarized map of the sky with a high degree of accuracy. The sensor operates in real time, under various weather and atmospheric conditions. The sensor output shows high heading accuracy relative to the celestial true north. Based upon the NAS-14V2 astronomical method of navigation, it is possible to define the sensor global position on earth.
Źródło:
Annual of Navigation; 2019, 26; 92-97
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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