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Aerial Photography (Orthophoto) - 2021
2021 Orthophoto - 3 inch resolution: This document describes the processes used to create the orthoimagery data produced for the District of Columbia from 2021 digital aerial photography. It was flown on March 11, 2021. 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 DC 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. 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 and 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 | <div style='text-align:Left;'><div><div><p><span>2021 Orthophoto - 3 inch resolution: This document describes the processes used to create the orthoimagery data produced for the District of Columbia from 2021 digital aerial photography. It was flown on March 11, 2021. </span><span>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 DC 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. 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 and 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></div></div></div> |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "JPEG2000 Raster Download (.zip)",
"format": null,
"accessURL": "https://dcgov.box.com/v/orthophoto2021jpeg",
"description": "WinZip download file containing JPEG2000."
},
{
"@type": "dcat:Distribution",
"title": "MrSID Raster Download (.zip)",
"format": null,
"accessURL": "https://dcgov.box.com/v/orthophoto2021sid",
"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_2021/ImageServer",
"mediaType": "application/json"
},
{
"@type": "dcat:Distribution",
"title": "ArcGIS Hub Dataset",
"format": "Web Page",
"accessURL": "https://opendata.dc.gov/datasets/DCGIS::aerial-photography-orthophoto-2021",
"mediaType": "text/html"
}
]
|
| identifier | https://www.arcgis.com/home/item.html?id=2cb9fe0f4b444ebbae359b8889f39dda |
| issued | 2021-12-02T17:34:31.000Z |
| keyword |
[
"2021 aerial",
"2021 image",
"DC",
"DC GIS",
"District of Columbia",
"Washington",
"aerial",
"aerial photography",
"basemap",
"imagery",
"imageryBaseMapsEarthCover",
"ortho",
"orthophoto",
"orthophotography",
"picture",
"planimetrics"
]
|
| landingPage | https://opendata.dc.gov/datasets/DCGIS::aerial-photography-orthophoto-2021 |
| license | https://creativecommons.org/licenses/by/4.0 |
| modified | 2024-10-09T15:04:31.000Z |
| publisher |
{
"name": "D.C. Office of the Chief Technology Officer"
}
|
| spatial | -77.1220,38.7855,-76.9007,39.0017 |
| theme |
[
"geospatial"
]
|
| title | Aerial Photography (Orthophoto) - 2021 |
