Determining ship position in a harbour based on omnidirectional image of the coastline

• Autorzy: Naus K. , Wąż M.

Identyfikatory

DOI

10.1515/aon-2015-0016

• Języki publikacji: EN

Abstrakty

EN

The following article presents researches aimed at the evaluation of precision in determining a ship’s position through comparing a omnidirectional map image to a real vision image of the coast line. The first part establishes the thesis and preparatory forms in conducting the research. It also presents designed and built equipment including a research tool software. A system equipped with a spherical catadioptric camera that aids data collection on board ship designated to processing and analyzing data collected on board in connection with the spherical images of an electronic navigational chart with a software module. The second part explains procedures followed in conducting the research. The foreword note explains the procedure in data collection aboard a ship maneuvering in the port after which the algorithm for position placement and precise parametrical count was presented. The concluding part shows analyses of obtained research result. It bears a performance on the evaluation of precision at determining position. As a measure, an average error value and distance fluctuation of obtained position from referential position. As our conclusion, primary agents having rudimentary influence on the quality of correlating spherical map image to coastline visual image were characterized.

PL

W artykule przedstawiono badania mające na celu ocenę dokładności wyznaczania pozycji statku przez dopasowywanie dookólnego obrazu mapowego do rzeczywistego wizyjnego obrazu linii brzegowej. W pierwszej części opisano założenia oraz sposób przygotowania badań. Zaprezentowano zaprojektowane i zbudowane sprzętowe oraz programowe narzędzia badawcze. W drugiej części przedstawiono sposób przeprowadzenia badania. Na początku opisano sposób realizacji zbierania danych na statku manewrującym w porcie. Następnie zaprezentowano algorytm służący do wyznaczania pozycji oraz obliczania jej parametrów dokładnościowych. Część końcowa jest analizą otrzymanych wyników badania. Przeprowadzono w niej ocenę dokładnościową wyznaczania pozycji. Jako mierniki do tej oceny zastosowano błąd średni i odległość oddalenia wyznaczanej pozycji od pozycji wzorcowej. W postaci wniosków scharakteryzowano główne czynniki mające zasadniczy wpływ na jakość pracy metody dopasowywania dookólnego obrazu mapowego do wizyjnego obrazu linii brzegowej.

Słowa kluczowe

EN

comparative navigation; Electronic Navigational Chart; spherical catadioptric camera system

• Wydawca: Polskie Forum Nawigacyjne
• Czasopismo: Annual of Navigation
• Rocznik: 2014
• Tom: No. 21
• Strony: 187--214
• Opis fizyczny: Bibliogr. 32 poz., rys.

Twórcy

autor

Naus K.

• Polish Naval Academy, Institute of Navigation and Hydrography, 81-103 Gdynia, 69 Śmidowicza St.

autor

Wąż M.

• Polish Naval Academy, Institute of Navigation and Hydrography, 81-103 Gdynia, 69 Śmidowicza St.

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