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Wyniki wyszukiwania dla: slam
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Automatic Identification System (AIS) Dynamic Data Integrity Monitoring and Trajectory Tracking Based on the Simultaneous Localization and Mapping (SLAM) Process Model
PublikacjaTo enhance the safety of marine navigation, one needs to consider the involvement of the automatic identification system (AIS), an existing system designed for ship-to-ship and shipto- shore communication. Previous research on the quality of AIS parameters revealed problems that the system experiences with sensor data exchange. In coastal areas, littoral AIS does not meet the expectations of operational continuity and system availability,...
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Motions and slamming impact on catamaran
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Towards Precise Visual Navigation and Direct Georeferencing for MAV Using ORB-SLAM2
PublikacjaA low accuracy of positioning using Global Navigation Satellite System (GNSS) are not meet geodetic requirements for direct images georeferencing for Unmanned Aerial Vehicle (UAV) photogrammetry. A majority of UAVs are equipped with a monocular or stereo non-metric cameras for either visual data gathering or live video feed for operator. A cheap positioning techniques used on board commercial UAVs are not that precise as geodetic...
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Simplified approach to assess the dynamic response of a container ship subjected to bow slamming load
PublikacjaSimplified approach to assess the dynamic response of a container ship subjected to the bow slamming load, resulting in a transient vibratory response, typically called a 'whip-ping', is presented. The accurate numerical modelling is very complex and involves cou-pling of the hydrodynamic and structural solution at every time step, leading to huge com-putational and workload cost. Thus, the one-way coupling methodology is adopted,...
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Phase Centre Corrections of GNSS Antennas and Their Consistency with ATX Catalogues
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APPLICATION OF STATISTICAL FEATURES AND MULTILAYER NEURAL NETWORK TO AUTOMATIC DIAGNOSIS OF ARRHYTHMIA BY ECG SIGNALS
PublikacjaAbnormal electrical activity of heart can produce a cardiac arrhythmia. The electrocardiogram (ECG) is a non-invasive technique which is used as a diagnostic tool for cardiac diseases. Non-stationarity and irregu- larity of heartbeat signal imposes many difficulties to clinicians (e.g., in the case of myocardial infarction arrhythmia). Fortunately, signal processing algorithms can expose hidden information within ECG signal contaminated...
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Chromatographic analyses of Lavandula angustifolia and Rosmarinus officinalis extracts and their biological effects in mammalian cells and cell-free systems
PublikacjaKnowledge of biological properties of natural compounds allows to understand their therapeutic value, efficacy and security. We investigated: composition of Lavandula angustifolia (LA) and Rosmarinus officinalis (RO) extracts, their antioxidant capacity, cytotoxicity and genotoxicity, their DNA-protective potential against DNA damage induced in hamster V79 cells by several genotoxins or in plasmid DNA by Fe2+ ions and activity...
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Effects of Salvia officinalis and Thymus vulgaris on oxidant-induced DNA damage and antioxidant status in HepG2 cells
PublikacjaSalvia officinalis (SO) and Thymus vulgaris (TV) are medicinal plants well known for their curative powers. However, the molecular mechanisms responsible for these abilities of sage and thyme have not been fully understood yet. In this study we investigated the composition and the quantitative estimation of plant extracts, the protective effects of plant extracts against hydrogen peroxide- and 2,3-dimethoxy-1,4 naphthoquinone-induced...
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Molecular Response in Intestinal and Immune Tissues to in Ovo Administration of Inulin and the Combination of Inulin and Lactobacillus lactis Subsp. cremoris
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Molecular mechanism(s) of regulation(s) of c-MET/HGF signaling in head and neck cancer
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Information management enhancement with simulation: case studies.
PublikacjaW rozdziale omówiono rolę symulacji w procesach zarządzania wiedzą i informacją, wskazując na jej znaczenie jako podstawowego narzędzia w tym obszarze.Przybliżono wybraną platformę symulacyjną opartą na systemie Visual SLAM.
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Odwzorowanie obiektów ograniczonego środowiska na trójwymiarowej mapie cyfrowej z wykorzystaniem robotów mobilnych zaopatrzonych w stereowizję
PublikacjaProblem podjęty w rozprawie dotyczy trójwymiarowego odwzorowania otoczenia przez roboty mobilne. Wpisuje się on w zagadnienie SLAM - jednoczesnego określania położenia i tworzenia mapy. W pracy skupiono się na wybranej realizacji mapowania opartej na stereowizji (konkretnego zagadnienia SLAM). Duży nacisk położono także na warunki konieczne do zapewnienia prawidłowej stereowizji oraz na sprzętowy układ eksperymentu, który umożliwia...
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A modern approach to an unmanned vehicle navigation
PublikacjaA traditional approach to manned vehicles navigation uses a data combined form a variety of navigation sensors like satellite, inertial and time-of-flight. With support of operators perception, chart and sensor, data are analyzed and navigation decisions are made. An unmanned platforms navigation needs an operators support, who is supervising a platforms decision process, basing on navigation data obtained via variety of electronic...
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Wizualizacja obrazu stereowizyjnego w systemie VisRobot
PublikacjaW pracy omawia się nowe podejście do robotycznego systemu wizyjnego, którego zadaniem jest wizualizacja obrazu stereo dla operatora robota. Pomysł ten polega na inteligentnym wykorzystaniu zmiennej bazy stereo, co pozwala na zwiększenie zakresu rozdzielczości głębi obrazu dla odległych obiektów. W systemie VisRobot na podstawie obrazu stereo, przy różnych bazach, wyznaczana jest mapa dysparycji. Odpowiednia wizualizacja (zakresu)...