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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. 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 ...

  4. Photometric system - Wikipedia

    en.wikipedia.org/wiki/Photometric_system

    Cousins RI photometry R c = 647 nm I c = 786.5 nm Cousins RI photometry, 1976 [9] the Dark Energy Camera g = 472.0 nm r = 641.5 nm i = 783.5 nm z = 926.0 nm Y = 1009.5 nm Central wavelengths for bands in the Dark Energy Survey [10] DENIS I = 0.79 μm J = 1.24 μm K = 2.16 μm Deep Near Infrared Survey: Eggen RI photometry R e = 635 nm I e = 790 ...

  5. VisionMap A3 Digital Mapping System - Wikipedia

    en.wikipedia.org/wiki/VisionMap_A3_Digital...

    A3 LightSpeed processing system produces the following output products: 1. Accurately solved vertical and oblique single images of the area of interest. The solution for each image is the result of the photogrammetric bundle block adjustment with self-calibration. 2. SLFs (Super Large Frames), used for stereo photogrammetric mapping. 3.

  6. Pictometry - Wikipedia

    en.wikipedia.org/wiki/Pictometry

    Pictometry is a patented aerial survey technique for producing oblique georeferenced imagery showing the fronts and sides of buildings and locations on the ground. Photos are captured by low-flying airplanes, depicting up to 12 perspectives (shot from a 40-degree angle) as well as an orthogonal (overhead) view of every location flown.

  7. Sudbury, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Sudbury,_Massachusetts

    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. The highest point in Sudbury is on the north slope of Nobscot Hill, and the highest summit is Tippling Rock. [27]

  8. Assabet River National Wildlife Refuge - Wikipedia

    en.wikipedia.org/wiki/Assabet_River_National...

    The Assabet River National Wildlife Refuge (ARNWR; formerly referred to as the U.S. Army's Fort Devens-Sudbury Training Annex) is a 2,230-acre (9.0 km 2) protected National Wildlife Refuge located approximately 25 miles (40 km) west of Boston and 4 miles (6.4 km) west of the Eastern Massachusetts National Wildlife Refuge Complex Headquarters, along the Assabet River.

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

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

    1/1,000 sec (0.001) F-number: f/4.5: ISO speed rating: 100: Date and time of data generation: 16:37, 9 November 2013: Lens focal length: 6.176 mm: Orientation: Normal: Horizontal resolution: 180 dpi: Vertical resolution: 180 dpi: File change date and time: 16:37, 9 November 2013: Y and C positioning: Co-sited: Exif version: 2.3: Date and time ...