Temat: high-resolution data

Skocz do pozycji: 1.

Tytuł:: Astronomically controlled deep-sea life in the Late Cretaceous reconstructed from ultra-high-resolution inoceramid shell archives
Autorzy:: Mertz-Kraus, Regina
Wierzbicki, Adam
Wagreich, Michael
Wolfgring, Erik
Kędzierski, Mariusz
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: The method of using remote sensing high-resolution imagery data in cartographical study of seaports
Metoda wykorzystania wysokorozdzielczych teledetekcyjnych danych obrazowych w kartograficznym opracowaniu portów morskich
Autorzy:: Klewski, A.
Sanecki, J.
Maj, K.
Stępień, G.
Gmaj, R.
Tematy:: teledetekcja
zobrazowanie satelitarne
dane wysokorozdzielcze
opracowanie kartograficzne
remote sensing
satellite imagery
high-resolution data
cartographical study; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/360432.pdf Link otwiera się w nowym oknie
Opis:: The article presents the author’s method of scale determining of cartographical chart. The worked out method permits on scale defining on the base on resolution of source imagery, precision of location and internal geometry of situational details as well as the defining of interpretation aim. In present study authors introduce a new attitude to cartographical study of seaports. It relies on very high resolution imageries using to create a orthophotomap and regards it as a final product instead of product attending to updating other maps.
W artykule przedstawiono autorską metodę wyznaczania skali opracowania kartograficznego. Opracowana metoda pozwala na określenie skali w oparciu o rozdzielczość materiału źródłowego, dokładność lokalizacji i geometrii wewnętrznej szczegółów sytuacyjnych oraz zdefiniowanie celu interpretacyjnego opracowania. W niniejszym opracowaniu autorzy przedstawiają nowe podejście w kartograficznym opracowaniu portów morskich. Polega ono na wykorzystaniu wysokorozdzielczych obrazów satelitarnych do tworzenia ortofotomapy satelitarnej i potraktowanie jej jako produktu końcowego zamiast materiału służącego do aktualizacji innych map.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Precipitation estimation and nowcasting at IMGW-PIB (SEiNO system)
Autorzy:: Szturc, J.
Jurczyk, A.
Ośródka, K.
Wyszogrodzki, A.
Giszterowicz, M.
Tematy:: opad atmosferyczny
prognoza probabilistyczna
szacowanie
opad
dane
wysoka rozdzielczość
precipitation
nowcasting
probabilistic forecast
precipitation estimation
high-resolution data; Pokaż więcej
Wydawca:: Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/108484.pdf Link otwiera się w nowym oknie
Opis:: A System for the Estimation and Nowcasting of Precipitation (SEiNO) is being developed at the Institute of Meteorology and Water Management – National Research Institute. Its aim is to provide the national meteorological and hydrological service with comprehensive operational tools for real-time high-resolution analyses and forecasts of precipitation fields. The system consists of numerical models for: (i) precipitation field analysis (estimation), (ii) precipitation nowcasting, i.e., extrapolation forecasting for short lead times, (iii) generation of probabilistic nowcasts. The precipitation estimation is performed by the conditional merging of information from telemetric rain gauges, the weather radar network, and the Meteosat satellite, employing quantitative quality information (quality index). Nowcasts are generated by three numerical models, employing various approaches to take account of different aspects of convective phenomena. Probabilistic forecasts are computed based on the investigation of deterministic forecast reliability determined in real time. Some elements of the SEiNO system are still under development and the system will be modernized continuously to reflect the progress in measurement techniques and advanced methods of meteorological data processing.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Drought prediction in the Lepelle River basin, South Africa under general circulation model simulations
Autorzy:: Ikegwuoha, Darlington C.
Dinka, Megersa O.
Tematy:: drought
high-resolution-climate-data
Lepelle-River-Basin
representative concentration pathways (RCPs)
weather evaluation and planning (WEAP); Pokaż więcej
Wydawca:: Instytut Technologiczno-Przyrodniczy
Powiązania:: https://bibliotekanauki.pl/articles/946901.pdf Link otwiera się w nowym oknie
Opis:: This study aims to evaluate changes in the frequency and severity of historical droughts (1980–2018) and then model future droughts occurrences (2019–2099) in the Lepelle River Basin (LRB), using Intergovernmental Panel on Climate Change (IPPC) General Circulation Model (GCM) simulations for two representative concentration pathways (RCP8.5 and RCP4.5). Firstly, the present-day and future hydrology of the LRB are modelled using the weather evaluation and planning (WEAP) model. Mann–Kendall tests are conducted to identify climate trends in the LRB. The reconnaissance drought index (RDI) and the streamflow drought index (SDI) are employed to explore hydro-meteorological droughts in the Lepelle River Basin, South Africa. The RDI and SDI are plotted over time to assess drought magnitude and duration. The simulated temporal evolution of RDI and SDI show a significant decrease in wetting periods and a concomitant increasing trend in the dry periods for both the lower and middle sections of the LRB under RCP4.5 as the 22^nd century is approached. Lastly, the Spearman and Pearson correlation matrix is used to determine the degrees of association between the RDI and SDI drought indices. A strong positive correlation of 0.836 is computed for the middle and lower sections of the LRB under the RCP8.5 forcing. Further findings indicate that severe to extreme drought above –2.0 magnitude are expected to hit the all three sections of the LRB between 2080 and 2090 under RCP8.5. In the short term, it is suggested that policy actions for drought be implemented to mitigate possible impacts on human and hydro-ecological systems in the LRB.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Automatic building extraction based on multiresolution segmentation using remote sensing data
Geographia Polonica Vol. 88 No. 3 (2015)
Autorzy:: Shrivastava, Neeti
Kumar Rai, Praveen
Wydawca:: IGiPZ PAN
Powiązania:: http://dx.doi.org/10.1109/TGRS.2003.814625 -
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Geographia Polonica
38. Segl K., Kaufmann H., 2001. Detection of small objects from high-resolution panchromatic satellite imagery based on supervised image segmentation, IEEE Transactions on Geoscience and Remote Sensing, vol. 39, no. 9, pp. 2080-2083.
16. GUPTA N., BHADAURIA H.S., 2014. Object based Information Extraction from High Resolution Satellite Imagery using eCognition. IJCSI International Journal of Computer Science Issues, vol. 11, no. 3/2, pp. 139-144.
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Opis:: Analysis of high resolution remote sensing images, included in the object-oriented approach, involved classifying the image objects according to class descriptions organised in an appropriate knowledge base. This technique is created by means of inheritance mechanisms, concepts, and methods of fuzzy logic and semantic modeling. The process of the object oriented classification mainly involved two sections: multiresolution segmentation and image classification. Multiresolution segmentation is a new procedure for image object extraction. It allows the segmentation of an image into a network of homogeneous image regions at any chosen resolution. These image object primitives represent image information in an abstract form, serving as building blocks and information carries for subsequent classification. A study was taken up to perform object oriented fuzzy classification using high resolution satellite data (Cartosat-1 fused with IRS-1C, LISS IV data) for automatic building extraction in the study area covering the administrative area of BHEL (Bharat Heavy Electrical Limited) colony, Haridwar, Uttrakhand (India). The study area was located at 29°56’55.51”N to 29°56’11.49”N latitude and 78°05’42.45”E to 78°07’00.09”E longitude. Two approaches were used: applying different spatial filters, and object orientation. The merged image is filtered using different high pass filters, such as: Kirsch, Laplace, Prewitt, Sobel, and Canny filtered images. The overall accuracy of the classified image was 0.93, and Kappa accuracy was 0.89. The produced accuracy for buildings, vegetation, and shadows were 0.9545, 1.0, and 0.8888, respectively, whereas user accuracy for buildings vegetation, and shadows were 1.0, 0.9375, and 1.0, respectively. Overall classification accuracy was based on TTA mask (training and test area mask) and it was 0.97. Kappa accuracy was 0.95.
24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 6.

Tytuł:: Wykorzystanie wysokorozdzielczych danych obrazowych w opracowaniach kartograficznych do celów wojskowych
Very High Resolution Imagery Data in Cartographic Elaborations for Military Use
Autorzy:: Bauer, R.W.
Piotrowski, A.
Stępień, G.
Tematy:: wysokorozdzielcze dane obrazowe
analizy geoprzestrzenne
baza danych georeferencyjnych
mapa obrazowa
very high resolution imagery data
geospatial analysis
georeferenced database
image map; Pokaż więcej
Wydawca:: Polskie Towarzystwo Geograficzne
Powiązania:: https://bibliotekanauki.pl/articles/204232.pdf Link otwiera się w nowym oknie
Opis:: W artykule przedstawiono wykorzystanie wysokorozdzielczych danych obrazowych do celów wojskowych. Autorzy wskazali trzy zasadnicze obszary wykorzystania danych fotogrametrycznych i teledetekcyjnych, którymi są mapy wektorowe (bazy danych georeferencyjnych), analizy geoprzestrzenne oraz opracowania specjalne - mapy obrazowe (image maps). Przedstawiono zalety i ograniczenia ortofotomapy satelitarnej i innych opracowań specjalnych, wykonywanych i wykorzystywanych przez wojska NATO w warunkach pokoju oraz w strefie działań wojennych.
The article presents the application of very high resolution imagery data in military cartographic elaborations. Three basic areas of application photogrammetry and remote sensing data have been indicated: vector maps (georeferenced data bases), geospatial analysis and special elaborations - image maps. Basic vector data bases created by NATO using very high resolution imagery data are mainly Vmap bases (vector map bases) with detail levels corresponding to information resolution of particular scales of cartographic elaboration: LO -1:1 000 000, L1 - 1:250 000, L2 - 1:50 000 and L3 - 1:25 000. Military vector maps (Vmap) enable spatial analyses using topology of presented terrain objects and attributes assigned to them. The other data base elaborated as part of an international agreement (including Poland) which uses very high resolution satellite images is the basis created within the framework of the MGCP project (Multinational Geospatial Co-production Program), in which 32 countries currently participate. MGCP is a global basis. The idea of the project is to create data for regions of interest, areas of current and potential conflicts and threats. The characteristic feature of data in the MGCP project is the fact that they don't include a full range of objects required to create some kinds of maps, e.g. the topographic map. These data cannot be field verified and horizontal detail of object location should have an error of no more than 25 meters. Information concerning borders, their course and status can be treated differently in each country taking part in the program, so in order to avoid potential conflict of interest it has been decided not to include such data in MGCP. The article also presents special elaborations done during stability missions in Iraq and Afghanistan. Image maps have presently become basic cartographic material in regions of conflict and hazards. They also constitute the basis for conducting further analyses. They are special maps (which thus do not undergo strict standard limitations), so the information range, scale and sheet size are conformed to particular user needs and the task performed. Application of very high resolution area imageries on stability missions in war zones is common practice. This is done because of the particularities of climatic, meteorological, logistical and organizational conditions as well as safety precautions. The article characterizes kinds of image data used by the army while showing the possibilities of creating cartographic elaborations and conducting geospatial analyses on the basis of this data. Through current image data it is possible to create quick cartographic elaborations mainly used in war zones, but which are more and more often made useful in elaborations intended for use during times of peace. Usage of satellite images has led to the emergence of a new type of product - image maps. Their elaboration standards have a loosely defined reference system and content range. Their applications are limited, e.g. they cannot be used for precise navigation. The kind of realized task and map addressee requirements are decisive here.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Identifying and Analyzing Safety Critical Maneuvers from High Resolution AIS Data
Autorzy:: Mestl, T.
Tallakstad, K.T.
Castberg, R.
Tematy:: AIS Data
Automatic Identification System (AIS)
High Resolution AIS Data
Critical Maneuvers
1-2-3 Rule
vessel traffic service (VTS)
AIS Transponder
Safety of Navigation; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/117375.pdf Link otwiera się w nowym oknie
Opis:: We demonstrate the value in previously disregarded parameters in AIS data, and present a novel way of quickly identifying and characterizing potentially safety critical situations for vessels with a properly configured AIS transponder. The traditional approach of studying (near) collision situations, is through vessel conflict zones, based on vessel location and speed from low resolution AIS data. Our approach utilizes the rate of turn parameter in the AIS signal, at maximum time resolution. From collision investigation reports it is often seen that prior to or at collision navigators perform frenetic rudder actions in the hope to avoid collision in the last second. These hard maneuverings are easily spotted as non-normal rate of turn signals. An identified potential critical situation may then be further characterized by the occurring centripetal acceleration a vessel is exposed to. We demonstrate the novelty of our methodology in a case study of a real ship collision. As the rate of turn parameter is directly linkable to the navigator behavior it provides information about when and to what degree actions were taken. We believe our work will therefore inspire new research on safety and human factors as a risk profiles could be derived based on AIS data.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Alternatywne dla zdjęć lotniczych źródła danych w procesie generowania true ortho
Alternative data for generation of true ortho
Autorzy:: Ewiak, I.
Kaczyński, R.
Tematy:: fotogrametria cyfrowa
zdjęcia lotnicze
wysokorozdzielcze obrazy satelitarne
ortorektyfikacja
true ortho
mapa numeryczna
digital photogrammetry
aerial photographs
high resolution satellite data
orthorectification
digital map; Pokaż więcej
Wydawca:: Stowarzyszenie Geodetów Polskich
Powiązania:: https://bibliotekanauki.pl/articles/130782.pdf Link otwiera się w nowym oknie
Opis:: Autorzy artykułu, poszukując alternatywnych dla zdjęć lotniczych źródeł danych obrazowych, określili stopień przydatności panchromatycznych zobrazowań QuickBird w procesie generowania true ortho. W badaniach metodycznych wykorzystano sceny pozyskane przy różnych kątach wychylenia sensora satelity od nadiru, obejmujące swym zasięgiem centrum Warszawy. Elementy orientacji zewnętrznej poszczególnych scen wyznaczono z dokładnością na poziomie ½ piksela obrazu źródłowego. Do procesu ortorektyfikacji panchromatycznych obrazów QuickBird włączono zbiór punktów zapisanych w regularnej siatce o oczku 20 m, których dokładność położenia wysokościowego wynosiła 0.6 m. Podstawowy materiał badawczy stanowiły ortoobrazy wygenerowane z pikselem 1m, przy kątach wychylenia sensora satelity od nadiru wynoszących 5°, 11° oraz 18°. Stwierdzono, że dokładność ortoobrazów wygenerowanych na podstawie tak skonfigurowanych danych wejściowych nie zależy zasadniczo od kąta wychylenia sensora satelity i wynosi m P = 0.56 m. Główny etap badań dotyczył określenia wpływu wychylenia sensora obrazującego satelity na dokładność odwzorowania na ortofotomapie przestrzennych obiektów terenowych. Na podstawie porównania na ortoobrazach oraz mapie numerycznej w skali 1:10 000 wartości współrzędnych płaskich, odwzorowanych obiektów terenowych o wysokości nie przekraczającej 30 m, stwierdzono, że względny błąd średni położenia tych obiektów nie przekracza m P = 2.4 m, w przypadku, gdy sensor obrazujący systemu QuickBird jest wychylony od nadiru nie więcej niż 5°. Wykazano, że wartość tego błędu wzrasta do m P = 5.8 m przy wzroście kąta wychylenia sensora do 11° oraz do m P = 9.7 m przy kącie wychylenia sensora wynoszącym 18°. Stwierdzono, że ortofotomapy w skali 1:10 000, wygenerowane z panchromatycznych scen QuickBird, pozyskanych przy wychyleniu sensora nie większym od 5°, stanowią dla większości obiektów terenowych produkt true ortho.
Alternative satellite data were studied for use in the generation of a true ortho of urban areas. The methodology of the generation of true ortho was elaborated using QuickBird Pan data of the Warsaw area. QuickBird data with different angle of acquisition was tested. The orientation of the scenes was done using RPC data and an additional 9 GCPs and Toutin’s model. The accuracy of the orientation of each scene was checked on 64 independent check points (ICPs). The accuracy on GCPs was less than 0.5 pixel of orientation of the QuickBird Pan data. RMSE on ICPs was less then 0.45 m. Orthorectification of the scenes was performed with the use of a DEM with a 20×20 m grid and RMSE (Z) < 0.6 m. RMSE (XY) = 0.56 m was achieved on the generated orthophotomaps with an output pixel size of 1×1 m for different collection angles of the image data. The main investigation was done for assessment of the planimetric accuracy of high buildings on the generated orthophotomaps. Digital topographic maps on a scale of 1:10 000 were used for planimetric accuracy assessment. RMSE (XY) < 2.4m for the acquisition angle less then 5° from nadir was achieved. The acquisition angle was 11° from nadir RMSE (XY) = 5.8 m and for 18° RMSE (XY) = 9.7 m . These results have been achieved only for spatial structures less than 30 m high. Panchromatic QuickBird data acquired close to the nadir angle could be used for elaborating the “true ortho” of an urban area.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 9.

Tytuł:: Archaeologia Polona Vol. 53 (2015)
Good practice in high-resolution EMI data processing for archaeological prospection
Autorzy:: Delefortrie, Samuël
De Smedt, Philippe
Van Meirvenne, Marc
Wydawca:: Institute of Archaeology and Ethnology Polish Academy of Sciences
Powiązania:: Archaeologia Polona
Minsley, B.J., Smith, B.D., Hammack, R., Sams, J.I. and Veloski, G. 2012. Calibration and filtering strategies for frequency domain electromagnetic data, Journal of Applied Geophysics 80, 56-66
Delefortrie, S., De Smedt, P., Saey, T., Van De Vijver, E. and Van Meirvenne, M. 2014. An efficient calibration procedure for correction of drift in EMI survey data, Journal of Applied Geophysics 110, 115-125
Opis:: il. ; 24 cm
ill. ; 24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Inne

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Skocz do pozycji: 10.

Tytuł:: Określenie zakresu wykorzystania danych satelitarnych Resurs-DK w opracowaniach fotogrametrycznych
Determining the utilisation range of resurs-dk satellite data in photogrammetric workflow
Autorzy:: Ewiak, I.
Tematy:: fotogrametria satelitarna
rosyjskie wysokorozdzielcze dane satelitarne
korekcja geometryczna
ortorekfyfikacja
analiza dokładności
satellite photogrammetry
very high resolution Russian satellite data
geometric correction
orthorectification
accuracy analysis; Pokaż więcej
Wydawca:: Stowarzyszenie Geodetów Polskich
Powiązania:: https://bibliotekanauki.pl/articles/130652.pdf Link otwiera się w nowym oknie
Opis:: W artykule zaprezentowano wyniki badan naukowych mających na celu określenie zakresu wykorzystania wysokorozdzielczych danych satelitarnych Resurs-DK w procesie generowania podstawowych produktów fotogrametrycznych. Na podstawie analizy metadanych tego systemu opracowano warsztat metodyczny korekcji geometrycznej oraz ortorektyfikacji. Podstawa tego warsztatu były algorytmy korekcji geometrycznej danych Resurs-DK wzorowane na modułach korekcji wysokorozdzielczych obrazów satelitarnych IKONOS oraz QuickBird funkcjonujących w oprogramowaniu fotogrametrycznym Ortho Engine PCI Geomatica. Zaprezentowano rezultaty korekcji geometrycznej obrazów panchromatycznych Resurs-DK z wykorzystaniem ścisłego modelu parametrycznego, modelu wielomianowego oraz wyznaczonych i skorygowanych współczynników wzorowanych na RPC. Na podstawie wnikliwej analizy poszczególnych wariantów korekcji geometrycznej stwierdzono, że wysokorozdzielcze zobrazowania Resurs-DK można skorygować geometrycznie na poziomie poniżej ½ piksela obrazu źródłowego. W niniejszym artykule zamieszczono również analizy wpływu dokładności wyznaczenia elementów orientacji zewnętrznej scen Resurs-DK na dokładność położenia pikseli w matrycy wygenerowanego ortoobrazu. Scharakteryzowano uwarunkowania procesu ortorektyfikacji rosyjskich zobrazowan Resurs-DK. Stwierdzono, że do wygenerowania ortoobrazów spełniajacych kryterium dokładności geometrycznej mapy topograficznej w skali 1:10000 należy włączyc zbiór punktów wysokościowych NMT o dokładności nie gorszej ni mH = 4m. Stwierdzono, że na podstawie zobrazowań nadirowych Resurs-DK można wygenerować ortoobrazy, których dokładność geometryczna odpowiada dokładności mapy topograficznej w skalach 1:5000, 1:10000 oraz skalach mniejszych. Jakkolwiek dla tego przedziału skalowego ortoobrazów spełnione jest kryterium dokładności geometrycznej, to ich zdolność interpretacyjna dotyczy jedynie skali 1:10 000.
The present paper presents the results of the research aimed at the qualification of the range of utilisation of very high resolution Resurs-DK satellite data in the process of generating basic photogrammetric products. The methodology for geometrical correction and orthorectification of the source Resurs-DK panchromatic images based on the metadata analysis was elaborated. The algorithms for geometrical correction of the Resurs-DK image data, based on the correction modules for IKONOS and Quick Bird satellite data functioning in photogrammetric commercial software Ortho Engine PCI Geomatica, were the critical for that methodology. Four variants of geometrical correction were applied. The results of the geometrical correction of the panchromatic scenes Resurs- DK, based on the parametrical sensor model adapted to the structure of Russian data and rational polynomial coefficients, which were identified based on the control point measurement, were presented. The analysis of the influence of the number and distribution of the control points throughout the scene on the result of geometric correction have been realised in each variant. With a thorough analysis of the individual variants of geometrical correction, that very high resolution Russian satellite data can be corrected with the accuracy level below half pixel of the source image. In the present paper, in addition to the profile of the methodology for geometrical correction of Resurs- DK satellite data, an analysis was presented relating to the influence of the accuracy of delimitation of external orientation Resurs-DK images on the accuracy location of the pixels in the orthoimage matrix. Technical conditions were qualified for the orthorectification process of new very high resolution Russian images. It was found that, for orthoimage generating meeting the accuracy criterion of topographic map scaled 1:10000, there should be a set of height points included, having digital elevation model with accuracy at least 4 m. I was proven that, based on the Resurs-DK satellite data, the orthoimages can be generated whose geometrical accuracy corresponds to the accuracy of the topographical map scaled 1:5000 and 1:10,000 and smaller. However, for that scale range of orthoimages, the geometrical accuracy criterion is met, yet their interpreting capability applies only to the 1:10000 scale.
Dostawca treści:: Biblioteka Nauki

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