{ "culture": "en-US", "name": "EnterpriseOrthoBW1990ImageService", "guid": "", "catalogPath": "", "snippet": "This 1990 historic digital imagery serves as a highly accurate base map. Many GIS data layers such as surface hydrography or road edges can be used in conjuction with the imagery.", "description": "The 1990 Historic Orthoimagery was derived from traditional orthophotography. Images will be in raster format. Original film negatives were cleaned, scanned, and diapositives were created from these scans. The digital files were stored on DLT tape. Files were uploaded to workstations for rectification and mosaicing. ERDAS Imagine Orthobase software was used to create a seamless county wide image. Elevation data from the 1997 photography was used in this process. The original 1990 was flown of an altitude of 1\"=1000'.", "summary": "This 1990 historic digital imagery serves as a highly accurate base map. Many GIS data layers such as surface hydrography or road edges can be used in conjuction with the imagery.", "title": "EnterpriseOrthoBW1990ImageService", "tags": [ "imagery", "EarthCover", "DOP", "digital orthophotography", "digital orthoimagery" ], "type": "Image Service", "typeKeywords": [ "Data", "Service", "Image Service", "ArcGIS Server" ], "thumbnail": "thumbnail/thumbnail.png", "url": "https://gisservices.oakgov.com/arcgis/services/ImageServices/EnterpriseOrthoBW1990ImageService/ImageServer", "spatialReference": "NAD_1983_StatePlane_Michigan_South_FIPS_2113_Feet_Intl", "accessInformation": "", "licenseInfo": "" }