- #Raster graphics editor orthographic mosaic software
- #Raster graphics editor orthographic mosaic license
- #Raster graphics editor orthographic mosaic zip
^ BBC Tomorrow's World: How maps are corrected and updated using aerial photography and optical machinery."Digital orthophotography and GIS." ESRI Conference. Production of orthophotos was historically achieved using mechanical devices.
#Raster graphics editor orthographic mosaic software
Some software can process the orthophoto and produce the linework automatically. Software can display the orthophoto and allow an operator to digitize or place linework, text annotations or geographic symbols (such as hospitals, schools, and fire stations). An orthoimage and a "rubber sheeted" image can both be said to have been "georeferenced" however, the overall accuracy of the rectification varies. A digital elevation model (DEM) is required to create an accurate orthophoto as distortions in the image due to the varying distance between the camera/sensor and different points on the ground need to be corrected. An orthorectified image differs from "rubber sheeted" rectifications as the latter may accurately locate a number of points on each image but "stretch" the area between so scale may not be uniform across the image. Orthophotographs are commonly used in geographic information systems ( GIS) as a "map accurate" background image. Unlike an uncorrected aerial photograph, an orthophoto can be used to measure true distances, because it is an accurate representation of the Earth's surface, having been adjusted for topographic relief, lens distortion, and camera tilt. This is a true orthophoto.Īn orthophoto, orthophotograph, orthoimage or orthoimagery is an aerial photograph or satellite imagery geometrically corrected ("orthorectified") such that the scale is uniform: the photo or image follows a given map projection. Ontario Ministry of Natural Resources and First Base Solutions.This photo is assembled from several overlapping photos from UAV, completely removing any residual tilt of the buildings. Citation:ĭistrict of Muskoka Ortho Imagery, 2008. Patrons are advised to fully respect the provisions of Canada's Copyright Act as well as terms and conditions imposed by the data provider. Ontario Ministry of Natural Resources and First Base Solutions must be acknowledged on any derivative product, whether printed or electronic, including for example, a printed map, a raster or vector graphic, a web-based application, etc. Library staff will ask patrons to read and sign a data release agreement before these licensed data can be released. These data are provided for personal use for academic, research, and/or teaching purposes. These images may be exported from ArcGIS in a choice of bitmapped formats (also known as raster graphics) including JPG, TIFF, GIF, and BMP or in a choice of vector graphics formats including AI, EPS, and SVG.
#Raster graphics editor orthographic mosaic zip
UW faculty, students and staff may copy these data to other media (for example: CD, DVD or Zip disc) for use elsewhere. Patrons may use the GIS and image processing software in the library to view and manipulate the data. There are public workstations in the Geospatial Centre that provide access to both ArcGIS and ArcView software programs, program extensions and data manipulation utilities.
#Raster graphics editor orthographic mosaic license
Under the terms of the Library's license agreement, these data sets are for use by students, faculty, and staff at the University of Waterloo only. Library reference staff are available to provide further information about these data sets and to deliver data upon request. In order to access these data sets, please visit the Geospatial Centre Reference Desk during reference hours. These georeferenced images are available in UTM zone 17, NAD83 coordinate system. Data is in MrSID compressed format and file size varies from 100 MB to over 600 MB. Also available are flight line indexes for the original 1 km by 1 km GeoTIFF tiles and for the 20 km by 20 km mosaics. Index for large tile mosaics is in 20 km by 20 km grids. Project area is approximately 14,000 sq km and the true colour 30 cm resolution imagery was captured in the spring of 2008.
This data set consists of large-tile ortho mosaics for Muskoka District, Simcoe County, and east half of Dufferin County. 2008 Simcoe/ Muskoka/ Dufferin Description: