Description: This dataset consists of 6-inch pixel resolution, four band orthoimages covering the entire Westchester County NY with a buffer of 1000 ft. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. The digital imagery was captured on April 14 and April 26, 2018.
Description: These files contain 2016 digital Ortho-imagery of Westchester County, New York. Image pixel size is 0.5' GSD. Image type is 4-band, RGB & NIR. The Image horizontal accuracy is within 4' at the 95% confidence level (NSSDA). Each file contains an image covering 2000 ft. by 3000 ft. on the ground.
Description: An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. For this dataset, the natural color orthoimages were produced at 0.5 feet (6 ") pixel resolution. The design accuracy is estimated to meet NMAS standards. Each orthoimage provides imagery for a 2,500 by 2,500 feet block on the ground.
Description: This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S.. A primary goal of the NAIP program is to enable availability of ortho imagery within one year of acquisition. The NAIP provides two main products: 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP) or from the National Agriculture Imagery Program (NAIP); 1 meter GSD ortho imagery rectified within +/- 6 meters to true ground. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. The NAIP imagery is formatted to the UTM coordinate system using the North American Datum of 1983 (NAD83). The NAIP imagery may contain as much as 10% cloud cover per tile. This file was generated by compressing NAIP imagery that cover the county extent. Two types of compression may be used for NAIP imagery: MrSID and JPEG 2000. Target value for the compression ratio is (15:1).
Description: 2010 orthogonal imagery: four-inch (4”)-pixel natural-color digital imagery acquired in fall 2010 and spring 2011. These were captured through a contract as part of the County’s first oblique imagery development project, along with the County’s first street-level imagery.
Description: 2009 orthophotos: one-foot (12”-pixel) 4-band natural-color and infrared imagery, acquired through the New York State’s Digital Orthophotography Program (NYSDOP) in April 2009 for the New York City Department of Environmental Protection (DEP). Areas considered sensitive were blurred by the New York State Office of Cyber Security and Critical Infrastructure Coordination (CSCIC).
Description: 2007 orthophotos: one-half-foot (6”-pixel) 3-band natural-color imagery, acquired through the New York State’s Digital Orthophotography Program (NYSDOP) in April 2007. Flown at 3,600’ above mean Sea Level (MSL), these are the first NYSDOP aerials of Westchester captured with digital cameras. Areas considered sensitive were blurred by the New York State Office of Cyber Security and Critical Infrastructure Coordination (CSCIC).
Description: 2004 orthophotos: one-half-foot (6”-pixel) 3-band natural-color imagery, acquired through the New York State’s Digital Orthophotography Program (NYSDOP) in April 2004. Flown at 3,600’ (600-scale) above mean Sea Level (MSL), these are the last aerials of Westchester County that were captured on film. Areas considered sensitive were blurred by the New York State Office of Cyber Security and Critical Infrastructure Coordination (CSCIC).
Description: 2000 orthophotos: one-half-foot (6”)-pixel 3-band natural-color film imagery, acquired in April 2000 for Westchester County through a contract. Flown at 4,800’ (800-scale) above mean Sea Level (MSL), these are the County’s first digital orthophotos, captured to develop the County’s first 100-scale digital basemap planimetrics. Areas considered sensitive by the County were blurred.
Description: 1976 Aerial Photos: One of twelve countywide historic aerial photo series acquired between 1925 and 1995. With significant image overlap, the black & white contact prints could be viewed in 3-D with a stereoscope. Quality and resolution varies (weather, flight altitude, etc.), and some prints no longer exist. The 1976 series was flown at 1” = 400’ scale by Aerial Data Reduction Assoc., Inc. of Pennsauken, N.J., on March 8th, 14th, and 23rd. This composite was made from 486 individual images.
Description: 1960 Aerial Photos: One of twelve countywide historic aerial photo series acquired between 1925 and 1995. With significant image overlap, the black & white contact prints could be viewed in 3-D with a stereoscope. Quality and resolution varies (weather, flight altitude, etc.), and some prints no longer exist. The 1960 series was flown on November 19th & 21st by American Air Surveys of Pittsburgh, PA. This composite was made from over 150 individual images.
Description: 1947 Aerial Photos:one of twelve countywide historic aerial photo series acquired between 1925 and 1995. With significant image overlap, the black & white contact prints could be viewed in 3-D with a stereoscope. Quality and resolution varies (weather, flight altitude, etc.), and some prints no longer exist. The post-war 1947 series was flown at 1”= 1700’ scale in March and April by Fairchild Aerial Surveys, Inc. of Long Island City, NY. This composite was made from over 150 individual images.