{"@type": "dcat:Dataset", "accessLevel": "public", "contactPoint": {"@type": "vcard:Contact", "fn": "DCGISgroup", "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\nOrthophoto - 3 inch resolution imagery service. Data produced for the District of Columbia from 2017\ndigital aerial photography. It was flown in early March, completed on March 8,\n2017.\u00a0</font><span style='color:rgb(0, 0, 0);'>Due to\ntechnical difficulties, the downtown area is not comprised of true\northoimagery. The contractor worked to minimize building lean by using the\nincreased side-lap of imagery.\u00a0</span><span style='color:rgb(0, 0, 0);'>The\naerial imagery acquisition was flown to support the creation of 4-band digital\northophotography with a 3 inch/0.08 meter pixel resolution over the full\nproject area covering the District of Columbia which is approximately 69 square\nmiles. The contractor received waivers to fly in the Flight Restricted Zone\n(FRZ) and P-56 areas. The ortho imagery was submitted to the District's Chief\nTechnology Office (OCTO) in GeoTiff/TFW format tiles following the tile scheme\nprovided by OCTO. MrSID and JPEG2000 compressed mosaics were delivered as well\nusing a 50:1 compression ratio.\u00a0</span><span style='color:rgb(0, 0, 0);'>All\nDistrict geospatial data is stored and exported in Maryland State Plane\ncoordinates NAD 83 meters.\u00a0This dataset provided as an\u00a0<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\u00a0<a href='mailto:open.data@dc.gov' rel='nofollow ugc'>open.data@dc.gov</a>.</span></p>", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://dcgov.box.com/v/orthophoto2017jpeg", "description": "WinZip download file containing JPEG2000.", "format": null, "title": "JPEG2000 Raster Download (.zip)"}, {"@type": "dcat:Distribution", "accessURL": "https://dcgov.box.com/v/orthophoto2017sid", "description": "WinZip download file containing MrSID.", "format": null, "title": "MrSID Raster Download (.zip)"}, {"@type": "dcat:Distribution", "accessURL": "https://imagery.dcgis.dc.gov/dcgis/rest/services/Ortho/Ortho_2017/ImageServer", "format": "ArcGIS GeoServices REST API", "mediaType": "application/json", "title": "ArcGIS GeoService"}, {"@type": "dcat:Distribution", "accessURL": "https://opendata.dc.gov/datasets/DCGIS::aerial-photography-orthophoto-2017", "format": "Web Page", "mediaType": "text/html", "title": "ArcGIS Hub Dataset"}], "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"}