As ortofotos são um conjunto de dados de fotos aéreas que cobrem a Estônia.
Uma ortofoto é uma foto aérea processada em que as distorções causadas pelo relevo do terreno, pela inclinação da câmera em relação ao solo no momento da exposição e pela projeção central da câmera são removidas. Uma ortofoto digital tem um determinado tamanho de pixel ou resolução que mostra a menor área indivisível exposta no solo (distância de amostragem do solo, GSD).
As ortofotos têm cobertura nacional e correspondem à escala de 1:5.000 a 1:10.000 (tamanho do pixel de 20 a 40 cm). As ortofotos para áreas densamente povoadas são produzidas com o tamanho de pixel de 10 a 16 cm.
O conjunto de dados mono tem uma única banda em escala de cinza com cobertura nacional.
Os dados podem ser usados sem custo financeiro para fins comerciais e não comerciais por um período não especificado, desde que a atribuição adequada seja dada ao licenciante (por exemplo, Estonian Land Board) junto com o título e a idade dos dados.
As ortofotos são um conjunto de dados de fotos aéreas que cobrem a Estônia. Uma ortofoto é uma foto aérea processada em que são removidas as distorções causadas pelo relevo do terreno, pela inclinação da câmera em relação ao solo no momento da exposição e pela projeção central da câmera. Uma ortofoto digital tem um determinado tamanho de pixel ou resolução que…
[null,null,[],[[["\u003cp\u003eThe Estonia Maamet orthos/mono 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 has a nationwide coverage with a resolution of 0.4 meters and a single grayscale band.\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\u003eThe dataset can be accessed and analyzed using Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# Estonia mono 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) [orthophotos](/earth-engine/datasets/tags/orthophotos) \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 mono dataset has a single grayscale band with nationwide coverage.\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| `mono` | 0 | 255 | meters | Grayscale |\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/mono');\nMap.setCenter(26.61312, 58.5879, 15);\nMap.addLayer(dataset, null, 'Estonia Maamet mono');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/Estonia/Estonia_Maamet_orthos_mono) \n[Estonia mono orthophotos](/earth-engine/datasets/catalog/Estonia_Maamet_orthos_mono) \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/mono, estonia,orthophotos \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_mono)"]]
