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    Wyświetlanie 1-14 z 14
    Tytuł:
    Some Dynamic Aspects of Photogrammetry Missions Performed by “PW-ZOOM” – The UAV of Warsaw University of Technology
    Autorzy:
    Rodzewicz, M.
    Głowacki, D.
    Hajduk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/139834.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    UAV
    unmanned aircraft
    photogrammetry mission
    orthophotomaps
    bezzałogowy statek powietrzny
    misja fotogrametryczna
    ortofotomapa
    Opis:
    The article presents the analyses of the flights carried out the by the Unmanned Aerial Vehicle (UAV) named PW-ZOOM used to perform a photogrammetric mission and monitoring of fauna in Antarctic areas. The analyses focus on the deviations of the optical axis of the photo-camera which occurred during photogrammetric flights carried out on the same route but during several Antarctic expeditions performed in subsequent years (2014 and 2015). The results were subjected to correlation tests with weather conditions (wind speed and variability). The basis for these analyses are the data from the onboard signal recorder integrated with an autopilot.
    Źródło:
    Archive of Mechanical Engineering; 2017, LXIV, 1; 37-55
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal choice of the number of ground control points for developing precise DSM using light-weight UAV in small and medium-sized open-pit mine
    Autorzy:
    Long, Nguyen Quoc
    Goyal, Ropesh
    Bui, Luyen K.
    Cuong, Cao Xuan
    Canh, Le Van
    Minh, Nguyen Quang
    Bui, Xuan‑Nam
    Powiązania:
    https://bibliotekanauki.pl/articles/2073863.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    statek powietrzny
    kopalnia odkrywkowa
    technologia UAV
    lightweight UAV
    digital surface model
    ground control points
    small and medium-sized open-pit mine
    Opis:
    UAV technology is being applied for DSM generation in open-pit mines with a well-established fact that the precision of such DSM is improved by increasing the number of Ground Control Points (GCPs). However, DSMs are updated frequently in an open-pit mine where the surface is excavated continuously. This imposes a challenge to arrange and maintain the GCPs in the field. Therefore, an optimal number of GCPs should be determined to obtain sufficiently accurate DSMs while maintaining safety, time, and cost-effectiveness in the project. This study investigates the influence of the numbers of GCPs and their network configuration in the Long Son quarry, Vietnam. The analysis involved DSMs generated from eight cases with a total of 18 GCPs and each having five network configurations. The inter-case and intra-case accuracy of DSMs is assessed based on RMSEXY, RMSEZ, and RMSEXYZ. The results show that for a small- or medium-sized open-pit mine having an area of approximately 36 hectares, five GCPs are sufficient to achieve an overall accuracy of less than 10 cm. It is further shown that the optimal choice of the number of GCPs for DSM generation in such a mining site is seven due to a significant improvement in accuracy (<3.5 cm) and a decrease in configuration dependency compared to the five GCPs.
    Źródło:
    Archives of Mining Sciences; 2021, 66, 3; 369--384
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of data obtained from laser scanning and UAV used to develop a 3D model of the building object
    Integracja danych pozyskanych ze skaningu laserowego oraz UAV wykorzystana do opracowania modelu 3D obiektu budowlanego
    Autorzy:
    Kwoczyńska, Bogusława
    Małysa, Bogumił
    Powiązania:
    https://bibliotekanauki.pl/articles/2174070.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Currently, the possibilities offered by measurement techniques allow development of both cities in the form of 3D models as well as models of small and large architecture objects. Depending on the needs, the scale of an examined object or the intended use of the final product, geodesy finds ready-made measurement methods. If one wants to work out a 3D model of a building object in detail, the most accurate way is to use laser scanning technology. However, there are situations in which limitations resulting from the terrain layout or the structure of the building preclude to obtain full information about its shape. In such situations, the solution is to integrate data from various measurement devices. If creating a full 3D model of large buildings, the best choice to complete data, especially the roof of the object, is to use an unmanned aerial platform, because the resolution of images made on a low altitude is good enough to obtain a satisfactory effect in the form of a point cloud. The research used integration of data obtained at low altitude from two unmanned aerial vehicles, Fly-Tech DJI S1000 and DJI Phantom 3 Advanced - using various types of missions - with data recorded with the Leica ScanStation P40 terrestrial laser scanner. The data was integrated by giving them a common coordinate system - in this case the 2000 system, for the grid points measured in the field with the GNSS technique, and the use of Cyclone, Metashape and Pix4D software for this purpose. Combined point clouds were used for 3D modelling of the sacred object with Bentley CAD software. The accuracy with which data integration was performed and errors resulting from the use of various measurement techniques were determined. The result of the study is a 3D model of the Church of Our Lady of Consolation, located in Krakow at the Sportowe estate.
    Obecnie możliwości jakie dają techniki pomiarowe, pozwalają na opracowywanie zarówno miast w postaci modeli 3D, jak i modeli obiektów małej i dużej architektury. W zależności od potrzeb, skali badanego obiektu, czy przeznaczenia finalnego produktu, geodezja znajduje gotowe metody pomiarowe. Chcąc szczegółowo opracować model 3D obiektu budowlanego, najdokładniejszym sposobem okazuje się wykorzystanie technologii skaningu laserowego. Jednak są sytuacje, w których ograniczenia wynikające z układu terenowego lub konstrukcji budynku, nie pozwalają na pozyskanie pełnej informacji o jego bryle. W takich sytuacjach rozwiązaniem jest zintegrowanie danych z różnych sprzętów pomiarowych. W przypadku tworzenia pełnego modelu 3D dużych obiektów budowlanych, najlepszym wyborem do uzupełnienia danych, szczególnie dachu obiektu, jest użycie bezzałogowej platformy latającej, gdyż rozdzielczość zobrazowań wykonanych na niskim pułapie jest na tyle dobra, że pozwala otrzymać zadowalający efekt w postaci chmury punktów. W badaniach wykorzystano integrację danych pozyskanych z niskiego pułapu z dwóch bezzałogowych platform latających, Fly-Tech DJI S1000 i DJI Phantom 3 Advanced - wykorzystując różnego rodzaju misje - z danymi zarejestrowanymi naziemnym skanerem laserowym Leica ScanStation P40. Zintegrowanie danych obyło się poprzez nadanie im wspólnego układu współrzędnych - w tym przypadku układu 2000, dla pomierzonych w terenie techniką GNSS punktów osnowy oraz wykorzystanie do tego celu oprogramowania Cyclone, Metashape i Pix4D. Połączone chmury punktów wykorzystano na cele modelowania 3D obiektu sakralnego w oprogramowaniu CAD firmy Bentley. Określono dokładność, z jaką przebiegła integracja danych oraz błędy wynikające z zastosowania różnych technik pomiarowych. Efektem opracowania jest model 3D Kościoła Matki Bożej Pocieszenia, znajdującego się w Krakowie na osiedlu Sportowym.
    Źródło:
    Archives of Civil Engineering; 2022, 68, 4; 311--330
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    S-band and Ku-band SAR system development for UAV-based applications
    Autorzy:
    Kaniewski, Piotr
    Komorniczak, Wojciech
    Leśnik, Czesław
    Cyrek, Jacek
    Susek, Waldemar
    Serafin, Piotr
    Łabowski, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/221666.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    unmanned aerial vehicle
    UAV
    synthetic aperture radar
    SAR
    Range–Doppler algorithm
    RDA
    imagery intelligence system
    IMINT system
    Opis:
    This paper describes a synthetic aperture radar system for tactical-level imagery intelligence installed on board an unmanned aerial vehicle. Selected results of its tests are provided. The system contains interchangeable S-band and Ku-band linear frequency-modulated, continuous wave radar sensors that were built within a frame of a research project named WATSAR, conducted by the Military University of Technology and WB Electronics S.A. One of several algorithms of radar image synthesis, implemented in the scope of the project, is described in this paper. The WATSAR system can create online and off-line radar images.
    Źródło:
    Metrology and Measurement Systems; 2019, 26, 1; 53-64
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wind tunnel tests of hovering propellers in the transition state of Quad-Plane
    Autorzy:
    Pobikrowska, Katarzyna
    Goetzendorf-Grabowski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2086838.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wind tunnel
    propeller
    VTOL
    Vertical Take Off and Landing
    hybrid UAV
    aerodynamics
    propulsion
    tunel aerodynamiczny
    śmigło
    hybrydowy UAV
    hybrydowy bezzałogowy statek powietrzny
    aerodynamika
    napęd
    Opis:
    The following paper presents wind tunnel investigation of aerodynamic characteristics of hovering propellers. This propulsion system may be applied on a lightweight Quad Plane VTOL (Vertical Take-Off and Landing) UAV (Unmanned Aerial Vehicle). A Quad Plane is a configuration consisting of a quadcopter design combined with a conventional twin-boom airplane. This kind of design should therefore incorporate the advantages of both types of vehicles in terms of agility and long endurance. However, those benefits may come with a cost of worse performance and higher energy consumption. The characteristics of a fixed-wing aircraft and propellers in axial inflow are well documented, less attention is put to non-axial flow cases. VTOL propellers of a hybrid UAV are subject to a multitude of conditions – various inflow speeds and angles, changing RPMs, interference between propellers and between nearby aerodynamic structures. The tested system presented in this article consists of four electric motors with two coaxial pairs of propellers mounted on one of the fuselage beams. Such a configuration is often chosen by designers of small and medium hybrid UAVs. There is a need for studies of clean, efficient ways of transporting, and this article can aid future designers of a new type of electric UAVs.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 6; e138821, 1--13
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Blockchain System for Secure and Efficient UAV-to-Vehicle Communication in Smart Cities
    Autorzy:
    Evangeline, Suganthi
    Lenin, Ashmiya
    Kumaravelu, Vinoth Babu
    Powiązania:
    https://bibliotekanauki.pl/articles/2202980.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    blockchain technology
    elliptic curve digital signature algorithm (ECDSA-192)
    intelligent transportation system (ITS)
    smart contract
    unmanned aerial vehicle (UAV)
    securehash algorithm (SHA)
    vehicular ad hoc network (VANET)
    Opis:
    In a smart city environment, Intelligent Transportation System (ITS) enables the vehicle to generate and communicate messages for safety applications. There exists a challenge where the integrity of the message needs to be verified before passing it on to other vehicles. There should be a provision to motivate the honest vehicles who are reporting the true event messages. To achieve this, traffic regulations and event detections can be linked with blockchain technology. Any vehicle violating traffic rules will be issued with a penalty by executing the smart contract. In case any accident occurs, the vehicle nearby to the spot can immediately send the event message to Unmanned Aerial Vehicle (UAV). It will check for its credibility and proceed with rewards. The authenticity of the vehicle inside the smart city area is verified by registering itself with UAVs deployed near the city entrance. This is enabled to reduce the participation of unauthorized vehicles inside the city zone. The Secure Hash Algorithm (SHA256) and Elliptic Curve Digital Signature Algorithm (ECDSA-192) are used for communication. The result of computation time for certificate generation and vehicles involvement rate is presented.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 1; 133--138
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research Studio for Testing Control Algorithms of Mobile Robots
    Autorzy:
    Dudzik, Sebastian
    Szelag, Piotr
    Baran, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1844460.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mobile robots
    UAV
    MATLAB Simulink
    QDrone
    Opis:
    In recent years, a significant development of technologies related to the control and communication of mobile robots, including Unmanned Aerial Vehicles, has been noticeable. Developing these technologies requires having the necessary hardware and software to enable prototyping and simulation of control algorithms in laboratory conditions. The article presents the Laboratory of Intelligent Mobile Robots equipped with the latest solutions. The laboratory equipment consists of four quadcopter drones (QDrone) and two wheeled robots (QBot), equipped with rich sensor sets, a ground control station with Matlab-Simulink software, OptiTRACK object tracking system, and the necessary infrastructure for communication and security. The paper presents the results of measurements from sensors of robots monitoring various quantities during work. The measurements concerned, among others, the quantities of robots registered by IMU sensors of the tested robots (i.e., accelerometers, magnetometers, gyroscopes and others).
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 4; 759-768
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Real Time Implementation of Amphibious Unmanned Aerial Vehicle System for Horticulture
    Autorzy:
    Kumar, M. Arun
    Sara, Dioline
    Telagam, Nagarjuna
    Raj, Balwinder
    Powiązania:
    https://bibliotekanauki.pl/articles/2202979.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CATIA
    UAV
    automation
    thrust
    throttle
    Opis:
    Automating the tasks that require manpower has been considered as an area of active research in science and technology. Challenges in designing such systems include accuracy in the parameters of performance, minimal hardware, cost-efficiency, and security. The efficiency of drones designed for replacing humans is often evaluated using their weight, flying time, and power consumption. Herein, the prototypebased Drone model has been designed and discussed for horticulture applications. In this model, a horticulture drone has been designed for structuring and cutting of plants in street interstates. This methodology focuses on automation engineering that is utilized for cutting the plants in less time and less power, thereby diminishing the contamination that may happen by utilizing fuels. The epic part of this plan includes the less weight drone predesigned using Computer-Aided Three-Dimensional Interactive Application (CATIA) V5 Software. The throttle for the motors is adjusted at 50% to get the required thrust for the Unmanned Aerial Vehicle (UAV) to fly. Experimental results show that the horticulture drone has comparatively more flying time and less power consumption.
    Źródło:
    International Journal of Electronics and Telecommunications; 2023, 69, 1; 127--132
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Algorithm for solving the Discrete-Continuous Inspection Problem
    Autorzy:
    Grymin, R.
    Bożejko, W.
    Chaczko, Z.
    Pempera, J.
    Wodecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1403679.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    discrete-continuous optimization
    UAV
    VTOL
    autonomous drone
    zero emission
    Opis:
    The article introduces an innovative approch for the inspection challenge that represents a generalization of the classical Traveling Salesman Problem. Its priciple idea is to visit continuous areas (circles) in a way, that minimizes travelled distance. In practice, the problem can be defined as an issue of scheduling unmanned aerial vehicle which has discrete-continuous nature. In order to solve this problem the use of local search algorithms is proposed.
    Źródło:
    Archives of Control Sciences; 2020, 30, 4; 653-666
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of Flight Path Deviations for SAR Radar Installed on UAV
    Autorzy:
    Łabowski, M.
    Kaniewski, P.
    Konatowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/221533.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Unmanned Aerial Vehicle
    Synthetic Aperture Radar
    inertial measurement unit
    Global Navigation Satellite System
    Opis:
    The paper presents a method of calculation of position deviations from a theoretical, nominally rectilinear trajectory for a SAR imaging system installed on board of UAV. The UAV on-board system consists of a radar sensor, an antenna system, a SAR processor and a navigation system. The main task of the navigation part is to determine the vector of differences between the theoretical and the measured trajectories of UAV center of gravity. The paper includes chosen results of experiments obtained during ground and flight tests.
    Źródło:
    Metrology and Measurement Systems; 2016, 23, 3; 383-391
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low aerial imagery – an assessment of georeferencing errors and the potential for use in environmental inventory
    Autorzy:
    Smaczyński, M.
    Medyńska-Gulij, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/145577.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    UAV
    GNSS
    GCP
    geodetic control network
    environmental inventory
    geodezja
    kontrola geodezyjna
    fotogrametria
    Opis:
    Unmanned aerial vehicles are increasingly being used in close range photogrammetry. Real-time observation of the Earth’s surface and the photogrammetric images obtained are used as material for surveying and environmental inventory. The following study was conducted on a small area (approximately 1 ha). In such cases, the classical method of topographic mapping is not accurate enough. The geodetic method of topographic surveying, on the other hand, is an overly precise measurement technique for the purpose of inventorying the natural environment components. The author of the following study has proposed using the unmanned aerial vehicle technology and tying in the obtained images to the control point network established with the aid of GNSS technology. Georeferencing the acquired images and using them to create a photogrammetric model of the studied area enabled the researcher to perform calculations, which yielded a total root mean square error below 9 cm. The performed comparison of the real lengths of the vectors connecting the control points and their lengths calculated on the basis of the photogrammetric model made it possible to fully confirm the RMSE calculated and prove the usefulness of the UAV technology in observing terrain components for the purpose of environmental inventory. Such environmental components include, among others, elements of road infrastructure, green areas, but also changes in the location of moving pedestrians and vehicles, as well as other changes in the natural environment that are not registered on classical base maps or topographic maps.
    Źródło:
    Geodesy and Cartography; 2017, 66, 1; 89-104
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of UAV Position with Use of Smoothing Algorithms
    Autorzy:
    Kaniewski, P.
    Gil, R.
    Konatowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/221380.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Unmanned Aerial Vehicle
    Inertial Navigation System
    Global Navigation Satellite System
    Integrated Navigation System
    Synthetic Aperture Radar
    Kalman Filter
    smoothing algorithm
    Opis:
    The paper presents methods of on-line and off-line estimation of UAV position on the basis of measurements from its integrated navigation system. The navigation system installed on board UAV contains an INS and a GNSS receiver. The UAV position, as well as its velocity and orientation are estimated with the use of smoothing algorithms. For off-line estimation, a fixed-interval smoothing algorithm has been applied. On-line estimation has been accomplished with the use of a fixed-lag smoothing algorithm. The paper includes chosen results of simulations demonstrating improvements of accuracy of UAV position estimation with the use of smoothing algorithms in comparison with the use of a Kalman filter.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 1; 127-142
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of small uav position and attitude with reliable in-flight initial alignment for MEMS inertial sensors
    Autorzy:
    Wang, D.
    Dong, Y.
    Li, Q.
    Wu, J.
    Wen, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/221716.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    MEMS
    INS
    GNSS
    in-flight alignment
    unmanned aerial vehicle
    Opis:
    The advance of MEMS-based inertial sensors successfully expands their applications to small unmanned aerial vehicles (UAV), thus resulting in the challenge of reliable and accurate in-flight alignment for air-borne MEMS-based inertial navigation system (INS). In order to strengthen the rapid response capability for UAVs, this paper proposes a robust in-flight alignment scheme for airborne MEMS-INS aided by global navigation satellite system (GNSS). Aggravated by noisy MEMS sensors and complicated flight dynamics, a rotation-vector-based attitude determination method is devised to tackle the in-flight coarse alignment problem, and the technique of innovation-based robust Kalman filtering is used to handle the adverse impacts of measurement outliers in GNSS solutions. The results of flight test have indicated that the proposed alignment approach can accomplish accurate and reliable in-flight alignment in cases of measurement outliers, which has a significant performance improvement compared with its traditional counterparts.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 3; 603-616
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the impact of interior orientation parameters in different UAV-based image-block compositions on positional accuracy
    Autorzy:
    Grigillo, D.
    Uršič, M.
    Bone, M.
    Ambrožič, T.
    Pavlovčič-Prešeren, P.
    Kosmatin-Fras, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/220711.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    unmanned aerial vehicle
    calibration field
    interior orientation parameters
    positional accuracy assessment
    Opis:
    Understanding the factors that influence the quality of unmanned aerial vehicle (UAV)-based products is a scientifically ongoing and relevant topic. Our research focused on the impact of the interior orientation parameters (IOPs) on the positional accuracy of points in a calibration field, identified and measured in an orthophoto and a point cloud. We established a calibration field consisting of 20 materialized points and 10 detailed points measured with high accuracy. Surveying missions with a fixed-wing UAV were carried out in three series. Several image blocks that differed in flight direction (along, across), flight altitude (70 m, 120 m), and IOPs (known or unknown values in the image-block adjustment) were composed. The analysis of the various scenarios indicated that fixed IOPs, computed from a good geometric composition, can especially improve vertical accuracy in comparison with self-calibration; an image block composed from two perpendicular flight directions can yield better results than an image block composed from a single flight direction.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 3; 617-629
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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