Temat: textural classification

Skocz do pozycji: 1.

Tytuł:: Wykorzystanie metod geostatystycznych do klasyfikacji ekosystemów leśnych przy użyciu technik satelitarnych
Use of geostatistical methods for classification of forest ecosystems using satellite imagery
Autorzy:: Zawadzki, J.
Ciszewski, C.J.
Zasada, M.
Tematy:: zdjecia satelitarne
klasyfikacja
interpretacja
lasy
teledetekcja satelitarna
semiwariancja
lesnictwo
metody geostatystyczne
remote sensing
textural classification
geostatistics
spatial information
semivariance
semivariogram; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/1023493.pdf Link otwiera się w nowym oknie
Opis:: The role of textural information can be essential when analyzing remote images of forest ecosystems. Geostatistically based methods that use textural information are widely used in image processing. The role of geostatistical methods in analyzing remote sensing images of forest areas increased rapidly during the last several years following advancements in high−resolution remote−sensor technology. The results of numerous applications of geostatistical methods for processing remotely sensed forest images are very encouraging. This paper summarizes the geostatistical methods for remote sensing classification of forest ecosystems.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Semiwariancje tekstury obrazów satelitarnych Landsat TM obszarów leśnych
Semivariances of Landsat TM satellite imagery texture of forested areas
Autorzy:: Zawadzki, J.
Cieszewski, C.J.
Zasada, M.
Tematy:: zdjecia satelitarne
tereny lesne
interpretacja
teledetekcja satelitarna
semiwariancja
Landsat TM
lesnictwo
semivariance
semivariogram
geostatistics
textural classification
remote sensing
Landstat TM; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/972817.pdf Link otwiera się w nowym oknie
Opis:: The paper presents selected applications of the geostatistical methods for remote sensing studies of forest ecosystems. The texture of the remote sensing images of the forests can be highly complex, but at the same time it is very useful for interpretation of these images. We explored differences on semivariances calculated from transects of the Landsat TM images associated with images of young, middle−aged, old, and natural versus planted stands, as well as compared semivariances for loblolly pine (Pinus taeda L.) and longleaf pine (Pinus palustris Mill.) in Georgia, USA. We analyzed the imagery data in conjunction with ground measurements. The results showed that in spite of the relatively low Landsat TM resolution (30m), the semivariances might give useful additional information about the above−mentioned classes. The semivariances for loblolly pine depend on the age as well as on the origin of the forest stand (natural vs. planted). On the other hand, because of the low−resolution, the classical parameters of a range of semi−variances are rather difficult for classification. However, we found important differences for sill values as well as for semivariance values for the distances of a few lags. These parameters seem to be useful for forest stand discrimination. Significant differences were also found between semivariances calculated from loblolly pine and longleaf pine stands.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Zastosowanie metod geostatystycznych do wyznaczania cech taksacyjnych i parametrów biofizycznych lasów technikami teledetekcyjnymi
The use of geostatistical methods for remote?sensing based determination of inventory measures and biophysical parameters of forests
Autorzy:: Zawadzki, J.
Cieszewski, C.J.
Zasada, M.
Tematy:: zdjecia satelitarne
cechy taksacyjne
wlasciwosci biofizyczne
metody badan
interpretacja
lasy
teledetekcja satelitarna
semiwariogram
semiwariancja
lesnictwo
zdjecia lotnicze
metody geostatystyczne
semivariance
semivariogram
textural classification
remote sensing
landsat tm; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/1023830.pdf Link otwiera się w nowym oknie
Opis:: Despite constant advances in geostatistics and its many succesful applications in remote sensing and forestry, it remains a relatively unknown field in Poland. The main aim of this paper is to show applicability of various geostatistical techniques in estimation of inventory measures and biophysical parameters of forests. We show examples of practical applications without going into the complex theoretical bases of the described methods. We also present a wide selection of the most important papers in the subject.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Comparison of soil texture classification according to the new Polish Standard, PTG and international classifications [FAO and USDA]
Autorzy:: Drzymala, S
Tematy:: Polish Soil Science Society
classification
Polish Normalization Committee
soil fraction
international classification
Polish standard PN-R-04033
soil texture
textural group; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1401861.pdf Link otwiera się w nowym oknie
Opis:: The classification into soil fractions found in the new Polish Standard PN-R-04033 is fully comparable- with the international classifications (FAO/USDA) in question. The following diameters were adopted as the main groups of soil fractions: stones >75 mm, gravel 75-2 mm, sand 2.0-0.05 mm, silt 0.05-0.002 mm and clay <0.002 mm. On the other hand, soil fractions classification according to the Polish Soil Science Society (PTG), including so-called fine particles (<0.02 mm), is not compatible with both the new Polish Standard and the discussed international classifications. This also refers lo the classification into textural groups according to PTG. However, the classification into textural groups according lo Polish Standard is quite similar to international classifications.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses
Autorzy:: Chima, Priscilla
Baiyegunhi, Christopher
Tematy:: grain size distribution
textural parameters
lithofacies classification
hydrodynamic energy conditions
Triassic
Jurassic
rozkład wielkości ziarna
parametry teksturalne
klasyfikacja litofacji
warunki hydrodynamiczne
warunki energetyczne
trias
jura; Pokaż więcej
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Powiązania:: https://bibliotekanauki.pl/articles/2204351.pdf Link otwiera się w nowym oknie
Opis:: The Stormberg Group comprises the Molteno, Elliot and Clarens formations and is one of four stratigraphical groups that make up the Karoo Supergroup in South Africa. The group is the highest unit in the Karoo Basin, representing the final phase of preserved sedimentation. The major problem with the Stromberg Group is that the mode of transport, hydrodynamic energy conditions and depositional environment are still poorly understood. For the present paper, grain size and lithofacies studies on selected sandstones from the Molteno, Elliot and Clarens formations were performed so as to elucidate their textural characteristics, depositional processes, sedimentation mechanisms and hydrodynamic energy conditions and to discriminate different depositional environments. The statistical parameters of grain size distribution (mean grain size, standard deviation, skewness and kurtosis) show that the sandstones are predominantly unimodal, fine grained, moderately well sorted, mesokurtic and near symmetrical. The bivariate diagrams of the aforementioned statistical parameters demonstrate that river and aeolian dune had the greatest impact on the depositional environments. Likewise, the C-M pattern (Passega diagram) shows that the sandstones were mostly deposited through tractive current process. Furthermore, the C-M diagram reveals the prevalence of rolling, suspension and graded suspension modes of sediment transportation. Seventeen sedimentary lithofacies were identified and grouped into seven lithofacies associations. These lithofacies associations indicate braided channel, overbank and swamp deposits for the Molteno Formation, alluvial fan/floodplain and playa deposits for the Elliot Formation and aeolian deposits for the Clarens Formation.
Dostawca treści:: Biblioteka Nauki

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