Spatio-statistical optimization of image segmentation process for building footprint extraction using very high-resolution WorldView 3 satellite data

In order to exploit efficiently very high resolution satellite multispectral data for precision agriculture applications, validated methodologies should be established which link the observed reflectance spectra with certain crop/plant/fruit biophysical and biochemical quality parameters. To this end, based on concurrent satellite and field campaigns during the veraison period, satellite and in-situ data were collected, along with several grape samples, at specific locations during the harvesting period. These data were collected for a period of three years in two viticultural areas in Northern Greece. After the required data pre-processing, canopy reflectance observations, through the combination of several vegetation indices were correlated with the quantitative results from the grape/must analysis of grape sampling. Results appear quite promising, indicating that certain key quality parameters (like brix levels, total phenolic content, brix to total acidity, anthocyanin levels) which describe the oenological potential, phenolic composition and chromatic characteristics can be efficiently estimated from the satellite data.

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REMOTE SENSING APPLICATIONS IN THE FRAME OF “URBAN GEOLOGY” PROJECT

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.11323 ◽

2017 ◽

Vol 43 (3) ◽

pp. 1486

Author(s):

K. Nikolakopoulos ◽

P. Tsompos

Keyword(s):

Remote Sensing ◽

Land Use ◽

Image Analysis ◽

High Resolution ◽

Land Use Change ◽

Satellite Data ◽

Urban Geology ◽

Sensing Applications ◽

Remote Sensing Applications ◽

Very High

In the frame of the “Urban Geology” project of IGME a lot of remote sensing applications were carried out: DSMs creation and accuracy verification, orthorectification of very high resolution satellite data, data fusion, multitemporal and multisensor image analysis, land cover and land use change detection e.t.c. The applications that took place in the pilot case of Nafplio are presented in this study

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High Resolution Drone Surveying of the Pista Geoglyph in Palpa, Peru

Geosciences ◽

10.3390/geosciences8120479 ◽

2018 ◽

Vol 8 (12) ◽

pp. 479 ◽

Cited By ~ 6

Author(s):

Karel Pavelka ◽

Jaroslav Šedina ◽

Eva Matoušková

Keyword(s):

High Resolution ◽

Satellite Data ◽

Satellite Images ◽

Current Knowledge ◽

Super Resolution ◽

Archaeological Sites ◽

Historical Objects ◽

Fine Structures ◽

Very High ◽

Resolution Data

Currently, satellite images can be used to document historical or archaeological sites in areas that are distant, dangerous, or expensive to visit, and they can be used instead of basic fieldwork in several cases. Nowadays, they have final resolution on 35–50 cm, which can be limited for searching of fine structures. Results using the analysis of very high resolution (VHR) satellite data and super resolution data from drone on an object nearby Palpa, Peru are discussed in this article. This study is a part of Nasca project focused on using satellite data for documentation and the analysis of the famous geoglyphs in Peru near Palpa and Nasca, and partially on the documentation of other historical objects. The use of drone shows advantages of this technology to achieve high resolution object documentation and analysis, which provide new details. The documented site was the “Pista” geoglyph. Discovering of unknown geoglyphs (a bird, a guinea pig, and other small drawings) was quite significant in the area of the well-known geoglyph. The new data shows many other details, unseen from the surface or from the satellite imagery, and provides the basis for updating current knowledge and theories about the use and construction of geoglyphs.

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