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  2. File:Junction of rail trails under construction, South ...

    en.wikipedia.org/wiki/File:Junction_of_rail...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  3. OpenDroneMap - Wikipedia

    en.wikipedia.org/wiki/OpenDroneMap

    OpenDroneMap is an open source photogrammetry toolkit to process aerial imagery (usually from a drone) into maps and 3D models. [3] [4] [5] The software is hosted and distributed freely on GitHub. [6] OpenDroneMap has been integrated within American Red Cross's in-field Portable OpenStreetMap system. [7]

  4. Aerial survey - Wikipedia

    en.wikipedia.org/wiki/Aerial_survey

    Aerial survey is a method of collecting geomatics or other imagery data using airplanes, helicopters, UAVs, balloons, or other aerial methods. Typical data collected includes aerial photography , Lidar , remote sensing (using various visible and invisible bands of the electromagnetic spectrum , such as infrared , gamma , or ultraviolet ) and ...

  5. File:B & M Railroad, Section House, South Sudbury MA.jpg

    en.wikipedia.org/wiki/File:B_&_M_Railroad...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  6. File:Westbound rail trail under construction, South Sudbury ...

    en.wikipedia.org/wiki/File:Westbound_rail_trail...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  7. Photometric system - Wikipedia

    en.wikipedia.org/wiki/Photometric_system

    The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a set of primary standard stars is provided. A commonly adopted standardized photometric system is the Johnson-Morgan or UBV photometric system (1953). At present, there are more than 200 photometric systems. [citation needed]

  8. Sudbury, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Sudbury,_Massachusetts

    Sudbury in 1856. According to the United States Census Bureau, the town has a total area of 24.6 square miles (64 km 2), of which 24.4 square miles (63 km 2) is land and 0.3 square miles (0.78 km 2), or 1.06%, is water.

  9. File:Sudbury Town Hall, Sudbury MA.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Sudbury_Town_Hall...

    English: Sudbury Town Hall, Sudbury Massachusetts This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America . Its reference number is 76000277 .