Ortofotomapy to zbiór zdjęć lotniczych obejmujący Estonię.
Ortofotomapa to przetworzone zdjęcie lotnicze, z którego usunięto zniekształcenia spowodowane ukształtowaniem terenu, pochyleniem kamery względem ziemi w momencie ekspozycji i projekcją środkową kamery. Ortofotomapa cyfrowa ma określony rozmiar piksela lub rozdzielczość, która pokazuje najmniejszy niepodzielny obszar na ziemi (odległość próbkowania terenu, GSD).
Ortofotomapy obejmują cały kraj i odpowiadają skali 1:5000–1:10000 (rozmiar piksela 20–40 cm). Ortofotomapy dla gęsto zaludnionych obszarów są tworzone z rozmiarem piksela 10–16 cm.
Zbiór danych rgb_low_flying zawiera 3 pasma obejmujące gęsto zaludnione obszary: czerwone, zielone i niebieskie.
Dane można bezpłatnie wykorzystywać do celów komercyjnych i niekomercyjnych przez nieokreślony czas, pod warunkiem podania odpowiedniego atrybutu licencjodawcy (np. Estonian Land Board) wraz z tytułem i datą danych.
Ortofotomapy to zbiór zdjęć lotniczych obejmujący Estonię. Ortofotomapa to przetworzone zdjęcie lotnicze, z którego usunięto zniekształcenia spowodowane ukształtowaniem terenu, pochyleniem aparatu względem ziemi w momencie ekspozycji i projekcją środkową aparatu. Ortofotomapa cyfrowa ma określony rozmiar piksela lub rozdzielczość, która…
[null,null,[],[[["\u003cp\u003eThe "Estonia/Maamet/orthos/rgb_low_flying" dataset provides orthophotos covering Estonia from 1993 to 2021.\u003c/p\u003e\n"],["\u003cp\u003eOrthophotos are aerial photos corrected for distortions, offering a detailed view of the terrain.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset focuses on densely populated areas with a resolution of 0.4 meters and RGB bands.\u003c/p\u003e\n"],["\u003cp\u003eThis data is free for commercial and non-commercial use with proper attribution to the Estonian Land Board.\u003c/p\u003e\n"],["\u003cp\u003eEarth Engine users can easily access and analyze this dataset for various applications.\u003c/p\u003e\n"]]],["The dataset provides Estonia's aerial orthophotos from 1993 to 2021, processed to remove distortions. It includes red, green, and blue bands with a 0.4-meter pixel size, covering densely populated areas. The data, provided by the Estonian Land Board, is freely available for commercial and non-commercial use with proper attribution. Users can access the data through Google Earth Engine using the provided code snippet.\n"],null,["# Estonia RGB low flying orthophotos\n\nDataset Availability\n: 1993-01-01T00:00:00Z--2021-06-16T00:00:00Z\n\nDataset Provider\n:\n\n\n [Estonia orthophotos](https://geoportaal.maaamet.ee/eng/Spatial-Data/Orthophotos-p309.html)\n\nTags\n:\n[estonia](/earth-engine/datasets/tags/estonia) [low-flying](/earth-engine/datasets/tags/low-flying) [orthophotos](/earth-engine/datasets/tags/orthophotos) [rgb](/earth-engine/datasets/tags/rgb) \n\n#### Description\n\nOrthophotos are an aerial photo dataset covering Estonia.\n\nAn orthophoto is a processed aerial photo from which distortions caused\nby terrain relief, camera tilt relative to the ground at the moment of\nexposure and camera central projection are removed. A digital orthophoto\nhas a certain pixel size or resolution which shows the smallest\nindivisible exposed area on the ground (Ground Sampling Distance, GSD).\n\nOrthophotos have a nationwide coverage and correspond to the scale of\n1:5000-1:10000 (pixel size 20-40 cm). Orthophotos for densely-populated\nareas are produced with the pixel size of 10-16 cm.\n\nThe rgb_low_flying dataset has three bands covering densely-populated\nareas: red, green, and blue.\n\nFor more information, please see the\n[Estonia orthophotos documentation](https://geoportaal.maaamet.ee/eng/Spatial-Data/Orthophotos-p309.html)\n\n### Bands\n\n\n**Pixel Size**\n\n0.4 meters\n\n**Bands**\n\n| Name | Min | Max | Pixel Size | Description |\n|------|-----|-----|------------|-------------|\n| `R` | 0 | 255 | meters | Red |\n| `G` | 0 | 255 | meters | Green |\n| `B` | 0 | 255 | meters | Blue |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe data is free to use for commercial and non-commercial purposes for a\nnon-specified term, provided that proper attribution is given to the\nlicensor (e.g. Estonian Land Board) along with the title and age of the\ndata.\n\nFor more details please see the\n[Terms of use](https://geoportaal.maaamet.ee/docs/Avaandmed/Licence-of-open-data-of-Estonian-Land-Board.pdf)\n\n### Citations\n\nCitations:\n\n- Map data: Estonian Land Board\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('Estonia/Maamet/orthos/rgb_low_flying');\nMap.setCenter(24.959, 58.148, 18);\nMap.addLayer(dataset, null, 'Estonia Maamet rgb low flying');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/Estonia/Estonia_Maamet_orthos_rgb_low_flying) \n[Estonia RGB low flying orthophotos](/earth-engine/datasets/catalog/Estonia_Maamet_orthos_rgb_low_flying) \nOrthophotos are an aerial photo dataset covering Estonia. An orthophoto is a processed aerial photo from which distortions caused by terrain relief, camera tilt relative to the ground at the moment of exposure and camera central projection are removed. A digital orthophoto has a certain pixel size or resolution which ... \nEstonia/Maamet/orthos/rgb_low_flying, estonia,low-flying,orthophotos,rgb \n1993-01-01T00:00:00Z/2021-06-16T00:00:00Z \n57.3 21.5 59.5 28.1 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://geoportaal.maaamet.ee/eng/Spatial-Data/Orthophotos-p309.html)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/Estonia_Maamet_orthos_rgb_low_flying)"]]
