Le ortofoto sono un set di dati di foto aeree che coprono l'Estonia.
Un'ortofoto è una foto aerea elaborata da cui vengono rimosse le distorsioni causate
dal rilievo del terreno, dall'inclinazione della fotocamera rispetto al suolo al momento
dell'esposizione e dalla proiezione centrale della fotocamera. Un'ortofoto digitale
ha una determinata dimensione o risoluzione dei pixel che mostra la più piccola
area indivisibile esposta sul terreno (Ground Sampling Distance, GSD).
Le ortofoto hanno una copertura nazionale e corrispondono alla scala di
1:5000-1:10000 (dimensione pixel 20-40 cm). Le ortofoto per le aree densamente popolate
vengono prodotte con dimensioni dei pixel di 10-16 cm.
Il set di dati rgb_low_flying ha tre bande che coprono aree densamente popolate: rosso, verde e blu.
I dati sono utilizzabili senza costi per scopi commerciali e non commerciali per un periodo di tempo non specificato, a condizione che venga attribuita la giusta attribuzione al licenziante (ad es. Estonian Land Board) insieme al titolo e all'età dei dati.
Le ortofoto sono un set di dati di foto aeree che coprono l'Estonia. Un'ortofoto è una foto aerea elaborata da cui vengono rimosse le distorsioni causate dal rilievo del terreno, dall'inclinazione della fotocamera rispetto al suolo al momento dell'esposizione e dalla proiezione centrale della fotocamera. Un'ortofoto digitale ha una determinata dimensione o risoluzione dei pixel che…
[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)"]]
