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516 million building outlines in Africa

Google’s Open Buildings is a new open dataset containing the location and geometry of 516 million buildings across Africa.The data includes the polygon outline of each building, its size in square meters and a confidence score of it being a valid building.

Anyone can download the full dataset of over 500,000,000 buildings or download smaller datasets for individual level 4 S2 cells. The full data can be downloaded in CSV format or the tile geometry and URLs in GeoJSON format.Β 

Β It is hoped that the data will help refine an understanding of where people live, helping authorities to identify where infrastructure and vital services are required. It is also hoped that the data will contribute to a better understanding of population density, help authorities plan emergency responses, help with the rollout of digital address systems, and help with national planning.

The buildings were detected from satellite imagery by AI. The building data in some areas may be more accurate than in others. These confidence differences can emerge for a number of reasons. For example geological or vegetation features may have been confused with built structures. In some areas the delineations between individual buildings may not be clear in the satellite imagery. Buildings which are the same colors as the surrounding environment or terrain may be difficult to identify. Also very small buildings may be difficult to determine at the satellite resolution.

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Land Surveying Photos CollectionSince 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.

Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.

Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.

Looking for Specific Types of Surveying Photos?   Check out the Surveying Photo Feeds Page.  Want to see photos submitted by surveyors grouped by tag?  Check out the Photos Categories Page.

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Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection

Land Surveying Photos CollectionSince 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.

Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.

Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.

Looking for Specific Types of Surveying Photos?   Check out the Surveying Photo Feeds Page.  Want to see photos submitted by surveyors grouped by tag?  Check out the Photos Categories Page.

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