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    Wyświetlanie 1-7 z 7
    Tytuł:
    Photogrammetry at the Warsaw University of Technology - past and present
    Autorzy:
    Zawieska, D.
    Kurczyński, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/106835.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    digital photogrammetry
    process imaging
    automation
    LIDAR
    fotogrametria cyfrowa
    proces obrazowania
    automatyzacja
    Opis:
    The Department of Photogrammetry, Remote Sensing and Geographic Information Systems at the Warsaw University of Technology is one of six organizational units of the Faculty of Geodesy and Cartography. The photogrammetry has been under interest of scientists in Faculty for over 90 years. The last decades has been characterized by the incredible development of photogrammetric technologies, mainly towards wide automation and popularization of derivative products for processing data acquired at satellite, aerial, and terrestrial levels. The paper presents achievements of scientists employed in Photogrammetric Research Group during last decades related to projects that were carried out in this department.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 100; 221-234
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity of photogrammetric approaches for multi-purpose applications
    Autorzy:
    Bujakiewicz, A.
    Markiewicz, J.
    Bakuła, K.
    Zawierska, D
    Powiązania:
    https://bibliotekanauki.pl/articles/106787.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    photogrammetry
    computer vision
    image orientation
    data integration
    image matching
    fotogrametria
    wizja komputera
    orientacja obrazu
    integracja danych
    dopasowanie obrazu
    Opis:
    The presented paper shows the diversity of photogrommetric approaches by introducing a problem of camera interior orientation, data georeferencing. data integration and the issue of automatic object surface modelling. The authors discuss the abovementioned issues on the example of the work carried out at the Faculty of Geodesy and Cartography, Warsaw University of Technology referring to solutions practiced in Computer Vision. This article is an example of introduction of photogrammetry as a discipline open to achievements of close fields of science, which is widely applied in practice.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2014, 96; 9-19
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of video-tacheometric technology for documenting and analysing geometric features of objects
    Autorzy:
    Woźniak, M.
    Świerczyńska, E.
    Jastrzębski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/106791.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    video-tacheometric technology
    reflectorless technology
    lens distortion
    photogrammetry
    scanning
    technologia video-tachimetryczna
    technologia bezreflektorowa
    zniekształcenia obiektywu
    fotogrametria
    skanowanie
    Opis:
    This paper analyzes selected aspects of the use of video-tacheometric technology for inventorying and documenting geometric features of objects. Data was collected with the use of the video-tacheometer Topcon Image Station IS-3 and the professional camera Canon EOS 5D Mark II. During the field work and the development of data the following experiments have been performed: multiple determination of the camera interior orientation parameters and distortion parameters of five lenses with different focal lengths, reflectorless measurements of profiles for the elevation and inventory of decorative surface wall of the building of Warsaw Ballet School. During the research the process of acquiring and integrating video-tacheometric data was analysed as well as the process of combining “point cloud” acquired by using video-tacheometer in the scanning process with independent photographs taken by a digital camera. On the basis of tests performed, utility of the use of video-tacheometric technology in geodetic surveys of geometrical features of buildings has been established.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2015, 99; 28-43
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An attempt to apply tensor calculus to evaluate the deformation condition of vertical upper embankment zones for a landfill located in a mining area, based on satellite measurement results
    Autorzy:
    Szafarczyk, A.
    Ulmaniec, M.
    Borowiec, Wł.
    Powiązania:
    https://bibliotekanauki.pl/articles/225054.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    fotogrametria
    geodezja górnicza
    teren górniczy
    eksploatacja górnicza
    pomiary geodezyjne
    photogrammetry
    mine surveying
    mining area
    mining operation
    landfill
    engineering surveying
    Opis:
    Safe usage of post-flotation waste reservoirs (landfills) requires carrying periodical geodesic measurements in order to control their embankments' stability. This is particularly important if mining operations are performed under the landfill or in its neighbourhood. On the basis of the measurements results, various coefficients of the terrain deformation are determined and their values, together with the results of other observations, are used in order to evaluate the safety status of the facility further usage. The paper presents the results of experimental calculations, using satellite measurements of the landfill observation network fragment, including the middle zone of its embankments. 35 geometrical structures were selected in this zone, named "triangular rosettes". Vertices of relevant triangles are selected points the co-ordinates of which shall be determined with the satellite technology. Three annual cycles of GPS observations in the landfill controlled network were used in calculations, performed in 2004-2006. On the basis of the annual sets of point co-ordinates, periodical horizontal displacements of points making up the rosettes were determined. In turn, for the interior zone of each rosette, components of a two-dimensional deformation tensor were calculated, allowing for determining the values for horizontal extreme deformations and the directions of their occurrence in each rosette zone. Calculations were performed for three time periods: 2004-2005, 2005-2006 and 2004-2006. The results of evaluating the condition of horizontal deformations were presented against the background of mining operations performed in these time periods in the landfill region, as well as against the background of settlements in the analysed points in relevant annual periods obtained from classical observations, realised by precision levelling technology.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 317-326
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilisation of laser scanning technology and digital images for measurements of industrial objects - a case study
    Autorzy:
    Zawieska, D.
    Markiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/106818.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    photogrammetry
    computer vision
    CV
    SfM
    terrestrial laser scanning
    engineering surveys
    deformations
    fotogrametria
    widzenie komputerowe
    rozpoznawanie obrazu
    naziemny skaning laserowy
    badania techniczne
    odkształcenia
    Opis:
    Projection of a complicated geometry of industrial objects is the complex issue, which requires properly planned and prepared measurements. Such objects must be accurately inventoried, but their complicated nature often makes the access and the visibility of their entire surface very difficult. Documentation of measurements is often prepared in the form of sketches, plans or maps, which are amended with photographic documentation. The objective of this paper is to test the possibilities to apply laser scanning and the network of digital images for inventory and monitoring of technical conditions of industrial objects. Processing of a precise documentation acquired basing on terrestrial laser scanning data or dense points clouds generated from digital images still causes many difficulties and problems. Although data processing algorithms have been intensively developed with respect to generation of high resolution orthoimages or precise vector drawings, the existing problems are still connected with limitations related to imperfections of both techniques of measurements.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2015, 98; 28-38
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The new approach of using image and range based methods for quality control of dimension stone
    Autorzy:
    Levytskyi, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/106845.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    dimension stone
    fracturing
    photogrammetry
    image processing
    quality control
    mine surveying
    kamień bloczny
    kamień wymiarowy
    szczelinowanie
    fotogrametria
    przetwarzanie obrazu
    kontrola jakości
    badania geologiczne
    Opis:
    The basis for the quality control of commodity dimension stone blocks for mining industry is the study of fracturing. The identification of fracturing in rock masses is one of the most important aspects in rock mass modelling. Traditional methods for determination properties of fracturing are difficult and hazardous. This paper describes a new approach of fracturing identification, based on image and range data, which realized by image processing and special software. In this article describes a method using new computer algorithms that allow for automated identification and calculation of fracturing parameters. Different digital filters for image processing and mathematical dependences are analyzed. The digital imaging technique has the potential for being used in real time applications. The purpose of this paper is the accurate and fast mapping of fracturing in some walls of the Bukinsky gabbro deposit.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2017, 103; 66-77
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Urban area change visualization and analysis using high density spatial data from time series aerial images
    Autorzy:
    Altuntas, Cihan
    Powiązania:
    https://bibliotekanauki.pl/articles/106855.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    photogrammetry
    aerial image
    image-based point cloud
    digital elevation model
    visualization of changes
    urban area
    fotogrametria
    zdjęcie lotnicze
    chmura punktów
    cyfrowy model wysokościowy
    wizualizacja zmian
    przestrzeń miejska
    Opis:
    Urban changes occur as a result of new constructions or destructions of buildings, extensions, excavation works and earth fill arising from urbanization or disasters. The fast and efficient detection of urban changes enables us to update geo-databases and allows effective planning and disaster management. This study concerns the visualization and analysis of urban changes using multi-period point clouds from aerial images. The urban changes in the city centre of the Konya Metropolitan area within arbitrary periods between the years 1951, 1975, 1998 and 2010 were estimated after comparing the point clouds by using the iterative closest point (ICP) algorithm. The changes were detected with the point-to-surface distances between the point clouds. The degrees of the changes were expressed with the RMSEs of these point-to-surface distances. In addition, the change size and proportion during the historical periods were analysed. The proposed multi-period change visualization and analysis method ensures strict management against unauthorized building or excavation and more operative urban planning.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2019, 107; 1-12
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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