World Settlement Footprint (WSF) 2015, 2014-2015 çok zamanlı Landsat-8 ve Sentinel-1 görüntüleri (sırasıyla ~217.000 ve ~107.000 sahne işlenmiştir) aracılığıyla dünya genelinde yerleşim yerlerinin kapsamını belirten 10 m çözünürlüklü ikili bir maskedir.
Yerleşim yerlerinin zaman içindeki geçici dinamikleri, yerleşim yeri dışındaki diğer tüm bilgi sınıflarından belirgin şekilde farklıdır.
Bu nedenle, seçilen zaman aralığında ilgi alanında bulunan tüm çok zamanlı görüntüler göz önünde bulundurularak aşağıdakiler için temel zamansal istatistikler (ör. zamansal ortalama, minimum, maksimum vb.) çıkarılır:
radar verileri söz konusu olduğunda orijinal geri saçılma değeri ve
farklı spektral indeksler (ör. bitki örtüsü indeksi, yerleşim indeksi vb.) optik görüntülerde bulut maskeleme işlemi yapıldıktan sonra elde edilir.
Ardından, Destek Vektör Makineleri'ne (SVM'ler) dayalı farklı sınıflandırma şemaları sırasıyla optik ve radar zamansal özelliklerine ayrı ayrı uygulanır ve son olarak iki çıkış uygun şekilde birleştirilir.
Katmanın yüksek doğruluğunu ve güvenilirliğini nicel olarak değerlendirmek için Google ile işbirliği içinde, çok sayıda gerçeklik örneğine (ör. 900.000)
kitle kaynaklı fotoğraf yorumlama ile etiketlenmiştir. Literatürde şu anda önerilen en iyi uygulamalar doğrultusunda istatistiksel olarak sağlam ve şeffaf bir protokol tanımlanmıştır.
Tüm teknik ayrıntılar için lütfen yayını inceleyin.
Marconcini, M., Metz-Marconcini, A., Üreyen, S., Palacios-Lopez, D., Hanke, W., Bachofer, F.,
Zeidler, J., Esch, T., Gorelick, N., Kakarla, A., Paganini, M., Strano, E. (2020).
İnsanların yaşadığı yerleri gösteren World Settlement Footprint 2015. Scientific Data, 7(1), 1-14.
doi:10.1038/s41597-020-00580-5
World Settlement Footprint (WSF) 2015, 2014-2015 çok zamanlı Landsat-8 ve Sentinel-1 görüntüleri (sırasıyla ~217.000 ve ~107.000 sahne işlenmiştir) aracılığıyla elde edilen, dünya genelindeki yerleşim yerlerinin sınırlarını belirten 10 m çözünürlüklü ikili bir maskedir. İnsan yerleşimlerinin zaman içindeki geçici dinamikleri önemli ölçüde farklıdır…
[null,null,[],[[["\u003cp\u003eThe World Settlement Footprint (WSF) 2015 dataset provides a 10m resolution global map of human settlements, derived from 2014-2015 Landsat-8 and Sentinel-1 imagery.\u003c/p\u003e\n"],["\u003cp\u003eIt utilizes temporal dynamics and spectral indices to distinguish settlement areas from other land cover types with high accuracy, validated by extensive ground-truth samples.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available under a CC0-1.0 license and can be accessed and analyzed through Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eCreated by the German Aerospace Center (DLR) in collaboration with Google, the WSF 2015 is detailed in a Scientific Data publication.\u003c/p\u003e\n"]]],["The World Settlement Footprint (WSF) 2015 dataset, provided by DLR, is a global 10m resolution binary mask of human settlements. It uses 2014-2015 Landsat-8 and Sentinel-1 imagery, processing approximately 217,000 and 107,000 scenes, respectively. Temporal statistics from radar and optical data, including spectral indices, are extracted. Support Vector Machines (SVMs) are applied to classify settlements, with outputs combined and validated using 900,000 ground-truth samples. The dataset is accessible via Earth Engine.\n"],null,["# World Settlement Footprint 2015\n\nDataset Availability\n: 2015-01-01T00:00:00Z--2016-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [Deutsches Zentrum für Luft- und Raumfahrt (DLR)](https://www.dlr.de/)\n\nTags\n:\n[landcover](/earth-engine/datasets/tags/landcover) [landsat-derived](/earth-engine/datasets/tags/landsat-derived) [population](/earth-engine/datasets/tags/population) [sentinel1-derived](/earth-engine/datasets/tags/sentinel1-derived) [settlement](/earth-engine/datasets/tags/settlement) [urban](/earth-engine/datasets/tags/urban) \n\n#### Description\n\nThe World Settlement Footprint (WSF) 2015 is a 10m resolution binary mask\noutlining the extent of human settlements globally derived by means of\n2014-2015 multitemporal Landsat-8 and Sentinel-1 imagery (of which \\~217,000 and\n\\~107,000 scenes have been processed, respectively).\n\nThe temporal dynamics of human settlements over time are\nsensibly different than those of all other non-settlement information classes.\nHence, given all the multitemporal images available over a region of interest\nin the selected time interval, key temporal statistics (i.e., temporal mean,\nminimum, maximum, etc.) are extracted for:\n\n- the original backscattering value in the case of radar data; and\n- different spectral indices (e.g., vegetation index, built-up index, etc.) derived after performing cloud masking in the case of optical imagery.\n\nNext, different classification schemes based on Support\nVector Machines (SVMs) are separately applied to the optical and radar temporal\nfeatures, respectively, and, finally, the two outputs are properly combined\ntogether.\n\nTo quantitatively assess the high accuracy and reliability of the\nlayer, an extensive validation exercise has been carried out in collaboration\nwith Google based on a huge amount of ground-truth samples (i.e., 900,000)\nlabeled by crowd-sourcing photo-interpretation. A statistically\nrobust and transparent protocol has been defined following the state-of-the-art\npractices currently recommended in the literature.\n\nFor all technical details, please refer to\n[the publication](https://www.nature.com/articles/s41597-020-00580-5)\n\n### Bands\n\n**Bands**\n\n| Name | Min | Max | Pixel Size | Description |\n|--------------|-----|-----|------------|-------------------------|\n| `settlement` | 255 | 255 | 10 meters | A human settlement area |\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC0-1.0](https://spdx.org/licenses/CC0-1.0.html)\n\n### Citations\n\nCitations:\n\n- Marconcini, M., Metz-Marconcini, A., Üreyen, S., Palacios-Lopez, D., Hanke, W., Bachofer, F.,\n Zeidler, J., Esch, T., Gorelick, N., Kakarla, A., Paganini, M., Strano, E. (2020).\n Outlining where humans live, the World Settlement Footprint 2015. Scientific Data, 7(1), 1-14.\n [doi:10.1038/s41597-020-00580-5](https://doi.org/10.1038/s41597-020-00580-5)\n\n### DOIs\n\n- \u003chttps://doi.org/10.1038/s41597-020-00580-5\u003e\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.Image('DLR/WSF/WSF2015/v1');\n\nvar opacity = 0.75;\nvar blackBackground = ee.Image(0);\nMap.addLayer(blackBackground, null, 'Black background', true, opacity);\n\nvar visualization = {\n min: 0,\n max: 255,\n};\nMap.addLayer(dataset, visualization, 'Human settlement areas');\n\nMap.setCenter(90.45, 23.7, 7);\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/DLR/DLR_WSF_WSF2015_v1) \n[World Settlement Footprint 2015](/earth-engine/datasets/catalog/DLR_WSF_WSF2015_v1) \nThe World Settlement Footprint (WSF) 2015 is a 10m resolution binary mask outlining the extent of human settlements globally derived by means of 2014-2015 multitemporal Landsat-8 and Sentinel-1 imagery (of which \\~217,000 and \\~107,000 scenes have been processed, respectively). The temporal dynamics of human settlements over time are sensibly different ... \nDLR/WSF/WSF2015/v1, landcover,landsat-derived,population,sentinel1-derived,settlement,urban \n2015-01-01T00:00:00Z/2016-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.1038/s41597-020-00580-5](https://doi.org/https://www.dlr.de/)\n- [https://doi.org/10.1038/s41597-020-00580-5](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/DLR_WSF_WSF2015_v1)"]]
