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    Wyświetlanie 1-7 z 7
    Tytuł:
    Geometric accuracy of topographical objects at Polish topographic maps
    Autorzy:
    Ławniczak, R.
    Kubiak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/145573.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analiza kartograficzna
    dokładność mapy
    mapa topograficzna
    cartographic analysis
    accuracy of maps
    topographical maps
    Opis:
    The objective of research concerned verifying the accuracy of the location and shape of selected lakes presented on topographical maps from various periods, drawn up on different scales. The area of research covered lakes situated in North-Western Poland on the Międzychód-Sieraków Lakeland. An analysis was performed of vector maps available in both analogue and digital format. The scales of these studies range from 1:50 000 to 1:10 000. The source materials were current for the years 1907 through 2013. The shape and location of lakes have been verified directly by means of field measurements performed using the GPS technology with an accuracy class of RTK. An analysis was performed of the location and shape of five lakes. The analysed water regions were vectorised, and their vector images were used to determine quantitative features: the area and length of the shoreline. Information concerning the analysed lakes obtained from the maps was verified on the basis of direct field measurements performed using a GPS RTK receiver. Use was made of georeferential corrections provided by the NAVGEO service or a virtual reference station generated by the ASG EUPOS system. A compilation of cartographic and field data formed the basis for a comparison of the actual area and the length of the shoreline of the studied lakes. Cartographic analyses made it possible to single out the most reliable cartographic sources, which could be used for the purposes of hydrographical analyses. The course of shorelines shows the attached map.
    Źródło:
    Geodesy and Cartography; 2016, 65, 1; 55-66
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of errors in the creation and updating of digital topographic maps
    Autorzy:
    Yartseva, V.
    Besimbaeva, O.
    Khmyrova, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/145545.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mapowanie
    materiał kartograficzny
    mapa topograficzna
    mapping
    source cartographic material
    errors
    orthotransformation
    instrumental survey
    Opis:
    This article analyzes the technology of creating and updating a digital topographic map using the method of mapping (generalization) on an updated map with a scale of 1 : 25;000 based on the source cartographic material. The main issue in the creation of digital maps is the study of map production accuracy and error analysis arising from the process of map production. When determining the quality of a digital map, the completeness and accuracy of object and terrain mapping are evaluated. The correctness of object identification, the logical consistency of the structure, the and representation of objects are assessed. The main and the most effective method, allowing to take into account displacement errors for the relief during image processing, is orthotransformation, but the fragment used to update the digital topographic map needs additional verification of its compliance with the scale requirements of the map. Instrumental survey will help to clearly identify areas of space image closer to nadir points and to reject poor quality material. The software used for building geodetic control network should provide stable results of accuracy regardless on the scale of mapping, the physical and geographical conditions of the work area or the conditions of aerial photography.
    Źródło:
    Geodesy and Cartography; 2018, 67, 1; 143-151
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Land cover changes in catchment areas of lakes situated in headwaters of the Tyśmienica River
    Zmiany użytkowania terenu w zlewniach jezior położonych w górnym biegu rzeki Tyśmienicy
    Autorzy:
    Grzywna, A.
    Sender, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/293295.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    lake basin
    land use
    topographic maps
    Tyśmienica River
    mapa topograficzna
    rzeka Tyśmienica
    użytkowanie terenu
    zlewnia jeziora
    Opis:
    The paper presents the history of land cover changes in the catchment area of lakes situated in the headwaters of the Tyśmienica River. The basis of the study were topographic maps in scale 1:50 000, from 1936 and 2014. We analyzed the quantitative aspect of these changes. The study was conducted in three natural lakes (Rogóźno, Krasne, Łukcze), and in one lake transformed into a storage reservoir (Krzczeń). The technical issues of georeferencing maps in the Geographic Information System (GIS) software are addressed first. In the landscape of Łęczna and Włodawa Lake District, to the end of the 19th century wetlands and bushes dominated. The first type of human pressure on this area was agriculture. Another type of pressure was recreation. In the catchment areas of studied lakes increased mainly the area of buildings and forests. Significantly increased also the length of roads and watercourses. Almost completely disappeared bushes and wastelands. In most of the analyzed basins, the area of wetlands and arable lands decreased. The probable cause of the changes in catchment use was decline in the water table, and thus overgrowing of meadows and wetlands.
    Na podstawie map topograficznych w skali 1: 50 000 z 1936 i 2014 roku zaprezentowano zmiany w zagospodarowaniu terenu w zlewniach jezior. Do badań wybrano trzy naturalne jeziora (Rogóźno, Krasne, Łukcze) i jedno jezioro przekształcone w zbiornik retencyjny (Krzczeń). Do analiz wykorzystano program ArcGIS. W krajobrazie Pojezierza Łęczyńsko-Włodawskiego do końca XIX wieku dominowały mokradła i zakrzaczenia. Pierwszym rodzajem presji był rozwój rolnictwa. Kolejnym rodzajem presji krajobrazowej był rozwój rekreacji. W zlewniach badanych jezior zwiększyła się powierzchnia zabudowań i lasów. Zwiększyła się także długość dróg i cieków. Niemal całkowicie zanikły zakrzaczenia i nieużytki. Zmniejszyła się także powierzchnia mokradeł i gruntów ornych. Prawdopodobną przyczyną było obniżenie się lustra wody, a co za tym idzie – zarastanie użytkowanych ekstensywnie łąk i terenów podmokłych.
    Źródło:
    Journal of Water and Land Development; 2017, 33; 65-71
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planes coordinates transformation between PSAD56 to SIRGAS using a Multilayer Artificial Neural Network
    Transformacja współrzędnych płaskich pomiędzy PSAD56 to SIRGAS z wykorzystaniem wielowarstwowej sieci sztucznej inteligencji
    Autorzy:
    Tierra, A.
    Romero, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/145332.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sieci sztucznej inteligencji
    mapa topograficzna
    system odniesień przestrzennych
    PSAD56
    SIRGAS
    bidimensional transformations
    artificial neural network
    Opis:
    Prior any satellite technology developments, the geodetic networks of a country were realized from a topocentric datum, and hence the respective cartography was performed. With availability of Global Navigation Satellite Systems-GNSS, cartography needs to be updated and referenced to a geocentric datum to be compatible with this technology. Cartography in Ecuador has been performed using the PSAD56 (Provisional South American Datum 1956) systems, nevertheless it’s necessary to have inside the system SIRGAS (Sistema de Referencia Geocéntrico para las AmericaS). This transformation between PSAD56 to SIRGAS use seven transformation parameters calculated with the method Helmert. These parameters, in case of Ecuador are compatible for scales of 1:25 000 or less, that does not satisfy the requirements on applications for major scales. In this study, the technique of neural networks is demonstrated as an alternative for improving the processing of UTM planes coordinates E, N (East, North) from PSAD56 to SIRGAS. Therefore, from the coordinates E, N, of the two systems, four transformation parameters were calculated (two of translation, one of rotation, and one scale difference) using the technique bidimensional transformation. Additionally, the same coordinates were used to training Multilayer Artificial Neural Network -MANN, in which the inputs are the coordinates E, N in PSAD56 and output are the coordinates E, N in SIRGAS. Both the two-dimensional transformation and ANN were used as control points to determine the differences between the mentioned methods. The results imply that, the coordinates transformation obtained with the artificial neural network multilayer trained have been improving the results that the bidimensional transformation, and compatible to scales 1:5000.
    Dostęp do nowoczesnych technologii, w tym GNSS umożliwiły dokładniejsze zdefiniowanie systemów odniesień przestrzennych wykorzystywanych m.in. w definiowaniu krajowych układów odniesień i układów współrzędnych. W Ekwadorze wykorzystywany jest system PSAD56 (Provisional South American Datum 1956), ale w ostatnim czasie zaszła konieczność zdefiniowania wewnętrznego(krajowego) systemu SIRGAS (Sistema de Referencia Geocéntrico para las AmericaS). Do transformacji pomiędzy oboma systemami powszechnie wykorzystuje się metodę Helmerta, stosując układ siedmioparametrowy. Transformacja taka pozwala na zachowanie dokładności wystarczającej do opracowania map topograficznych w skalach 1:25 000 lub mniejszych. W artykule do transformacji zastosowano sieci neuronowe, co umożliwiło podniesienie dokładności do skali 1:5 000.
    Źródło:
    Geodesy and Cartography; 2014, 63, 2; 199-209
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charting topographic maps based on UAV data using the image classification method
    Autorzy:
    Klapa, Przemysław
    Bożek, Piotr
    Piech, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/100432.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
    Tematy:
    topographic map geospatial data
    UAV
    photogrammetry
    large-scale cartographic studies
    dane geoprzestrzenne
    mapa topograficzna
    fotogrametria
    wielkoskalowe badanie kartograficzne
    Opis:
    A topographic map is a representation of the terrain, its landform and spatial elements present therein. Land surveying and photogrammetric measurements must be conducted in order to produce such cartographic document. The following must be done while obtaining information on topographic objects: determine the character and type of an object or phenomenon; determine the range of its occurrence; indicate a precise location. The next stage involves classification of objects into relevant classes and categories, i.e. arable land, pastures, forests, water basins, technical infrastructure, buildings, and other. Then, the determined classes undergo the process of cartographic generalization by combining smaller elements into a single complex, determination of a common border of their occurrence, and application of relevant graphic symbols and colours. The measuring technique which provides quick and accurate topographic information about the surrounding area is the one that uses Unmanned Aerial Vehicles (UAV). Digital photographs taken during the flight are the basis for generating a high-quality orthophotomap. Accurate determination of the location of individual spatial elements allows large-scale cartographic documents to be developed. This paper will present the method of charting topographic maps of rural areas based on orthophotomaps made from the photographs taken during the UAV flight. Supervised and unsupervised methods of object classification will be tested in order to increase the effectiveness of determination of types and occurrence range of individual topographic objects, and the obtained results will be used to chart a topographic map of the studied area.
    Źródło:
    Geomatics, Landmanagement and Landscape; 2019, 2; 77-85
    2300-1496
    Pojawia się w:
    Geomatics, Landmanagement and Landscape
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geometric characteristics of Iraq’s raster topographic maps used for automatic updating the road network
    Autorzy:
    Abdallah, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/100558.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
    Tematy:
    maps update
    road networks segmentation
    topographic raster map
    tracking algorithm
    scanning algorithm
    methods of image binarization
    k-means method
    mapa
    mapa topograficzna
    aktualizacja
    Opis:
    This paper is devoted to the problem of road network extraction from raster image. The task of road network extraction is formulated in common view. The approach to the road map extraction has been proposed which can be applied for topographic map updating and is based on image clustering by k-means method and on application of scanning algorithm for extraction of road network fragments. Road map description is formed as set of linear fragments with knowing parameters. These linear fragments are created by merging of smaller parts. Experimental researches were implemented for maps of 10 Iraq cities. Experimental results show in average the extraction precision of 86% (in comparison with human expert).
    Źródło:
    Geomatics, Landmanagement and Landscape; 2015, 3; 7-18
    2300-1496
    Pojawia się w:
    Geomatics, Landmanagement and Landscape
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Landscape structure changes in the Slepiotka River drainage basin in the period 1824-1993 (The Silesian Upland, Poland)
    Autorzy:
    Mazurek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/100866.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    grunt
    struktura krajobrazu
    zlewnia
    rzeka
    Katowice
    GIS
    mapa topograficzna
    land use
    structure of the landscape
    Slepiotka River
    drainage basin
    topographic map
    Opis:
    The area of the Upper Silesian Coal Basin is the most important underground mining district in Poland. Coal mines, operating in the area since the eighteenth century, have contributed to massive transformations of the landscape structure. River valleys within range of intensive exploitation activities have been undergoing vast changes. The Slepiotka River drainage basin constitutes an interesting regional example of transformations in the river's watercourse as well as in its adjacent area. It is a left-hand tributary of the Klodnica River with a length of about 8.6 km. Changes in the landscape structure that occurred between 1824-1993 have been analyzed. The starting material consisted of topographical maps that were digitized and calibrated and served as a basis to create colorful compositions. The areas occupied by the different land cover types have been calculated, which allowed to determine their participation in the drainage basin. In about 169 years, significant changes took place in the area of research considering the share of different types of cover and land use. During this time, the river changed its course, both naturally and by human activities. Increasing urbanization and technological development contributed to the diametrical transformation of the landscape structure in the discussed area.
    Źródło:
    Contemporary Trends in Geoscience; 2014, 3, 1; 32-40
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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