Aerial Photography (Orthophoto) - 2017
2017
Orthophoto - 3 inch resolution imagery service. Data produced for the District of Columbia from 2017
digital aerial photography. It was flown in early March, completed on March 8,
2017. Due to
technical difficulties, the downtown area is not comprised of true
orthoimagery. The contractor worked to minimize building lean by using the
increased side-lap of imagery. The
aerial imagery acquisition was flown to support the creation of 4-band digital
orthophotography with a 3 inch/0.08 meter pixel resolution over the full
project area covering the District of Columbia which is approximately 69 square
miles. The contractor received waivers to fly in the Flight Restricted Zone
(FRZ) and P-56 areas. The ortho imagery was submitted to the District's Chief
Technology Office (OCTO) in GeoTiff/TFW format tiles following the tile scheme
provided by OCTO. MrSID and JPEG2000 compressed mosaics were delivered as well
using a 50:1 compression ratio. All
District geospatial data is stored and exported in Maryland State Plane
coordinates NAD 83 meters. This dataset provided as an ArcGIS Image service. Please note, the download feature for this image service in Open Data DC provides a compressed PNG, JPEG or TIFF. The compressed MrSID or JPEG2000 mosaic raster datasets are available under additional options when viewing downloads. Requests for the individual GeoTIFF set of images should be sent to open.data@dc.gov.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "DCGISgroup",
"@type": "vcard:Contact",
"hasEmail": "mailto:gisgroup@dc.gov"
}
|
| description | <p style='background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><font color='#000000'>2017 Orthophoto - 3 inch resolution imagery service. Data produced for the District of Columbia from 2017 digital aerial photography. It was flown in early March, completed on March 8, 2017. </font><span style='color:rgb(0, 0, 0);'>Due to technical difficulties, the downtown area is not comprised of true orthoimagery. The contractor worked to minimize building lean by using the increased side-lap of imagery. </span><span style='color:rgb(0, 0, 0);'>The aerial imagery acquisition was flown to support the creation of 4-band digital orthophotography with a 3 inch/0.08 meter pixel resolution over the full project area covering the District of Columbia which is approximately 69 square miles. The contractor received waivers to fly in the Flight Restricted Zone (FRZ) and P-56 areas. The ortho imagery was submitted to the District's Chief Technology Office (OCTO) in GeoTiff/TFW format tiles following the tile scheme provided by OCTO. MrSID and JPEG2000 compressed mosaics were delivered as well using a 50:1 compression ratio. </span><span style='color:rgb(0, 0, 0);'>All District geospatial data is stored and exported in Maryland State Plane coordinates NAD 83 meters. This dataset provided as an <a href='https://enterprise.arcgis.com/en/image/' rel='nofollow ugc'>ArcGIS Image service</a>. Please note, the download feature for this image service in Open Data DC provides a compressed PNG, JPEG or TIFF. The compressed MrSID or JPEG2000 mosaic raster datasets are available under additional options when viewing downloads. Requests for the individual GeoTIFF set of images should be sent to <a href='mailto:open.data@dc.gov' rel='nofollow ugc'>open.data@dc.gov</a>.</span></p> |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "JPEG2000 Raster Download (.zip)",
"format": null,
"accessURL": "https://dcgov.box.com/v/orthophoto2017jpeg",
"description": "WinZip download file containing JPEG2000."
},
{
"@type": "dcat:Distribution",
"title": "MrSID Raster Download (.zip)",
"format": null,
"accessURL": "https://dcgov.box.com/v/orthophoto2017sid",
"description": "WinZip download file containing MrSID."
},
{
"@type": "dcat:Distribution",
"title": "ArcGIS GeoService",
"format": "ArcGIS GeoServices REST API",
"accessURL": "https://imagery.dcgis.dc.gov/dcgis/rest/services/Ortho/Ortho_2017/ImageServer",
"mediaType": "application/json"
},
{
"@type": "dcat:Distribution",
"title": "ArcGIS Hub Dataset",
"format": "Web Page",
"accessURL": "https://opendata.dc.gov/datasets/DCGIS::aerial-photography-orthophoto-2017",
"mediaType": "text/html"
}
]
|
| identifier | https://www.arcgis.com/home/item.html?id=7551578a1cbc4e6c80d8c1821f7a9695 |
| issued | 2019-09-30T15:24:52.000Z |
| keyword |
[
"2017 aerial",
"2017 image",
"Aerial Photography",
"District of Columbia",
"Orthophotography",
"Washington DC",
"aerial",
"aerial photography",
"basemap",
"imagery",
"imagery service",
"ortho",
"planimetrics"
]
|
| landingPage | https://opendata.dc.gov/datasets/DCGIS::aerial-photography-orthophoto-2017 |
| license | https://creativecommons.org/licenses/by/4.0 |
| modified | 2024-10-09T15:05:32.000Z |
| publisher |
{
"name": "City of Washington, DC"
}
|
| spatial | -77.1220,38.7855,-76.9007,39.0017 |
| theme |
[
"geospatial"
]
|
| title | Aerial Photography (Orthophoto) - 2017 |
