Sunday 2 April 2017

Lab 4B Line Map Compilation, Orthorectification and Digital Elevation Model (DEM) - Advanced Photogrammetry (GLS 615)




The aim of this lab is to produce a Orthophoto Images and a Line Map by using a DEM concept. Orthophotographs are photographic images constructed from vertical or near-vertical aerial photographs, such that the effects of central perspective, relief displacement, and tilt are (practically) removed. Orthophoto can be obtained by resampling aerial image with fiducial marks. It can be used as base map because it has all the original features in the image. Plus, orthophoto also can be used to measure true distance of features within the image. Orthophoto in digital can be generates using images from aerial and space borne sensors. Orthophoto is used for it increased availability of digital data, easier acquisition of input data, powerful computers that can store data and increased of demand of up to date maps.


Software used:

PHOTOMOD 5.0 Lite


My report and procedure:

  1. Lab 4b Line Map Compilation, Orthorectification and DEM
  2. Line Map
  3. Digital Elevation Model

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