Topographic Mapping


A leading research organization, Europe

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The customer, a prestigious technical research institute required AABSyS to prepare digital topographic maps of two districts in Romania. The company required AABSyS to use digital geographic information of the region to create 3D models and analysis of effects of earthquakes and other influences on the region.

The customer possess satellite images of adjacent land areas in 1:30,000 scale and in TIFF format.

Solution Offered

  • The satellite images of adjacent land areas (Scale: 1:30,000) were merged, grey scale adjusted and different land cover types were classified.
  • The team at AABSyS created an ortho-photo (composite image) from four satellite images (in TIFF format). The four images were merged with a minimum loss of contrast, the grey scale was adjusted and minor mismatched at the edges were fine-tuned. The same gray scale was maintained across the composite image so that different land types such as forest, agriculture, urban are easily distinguishable.
  • Different land cover types were classified such as forests, urban and rural settlements, highways, main roads, side roads, buildings, rivers, trenches, railway tracks, TV towers, windmills, electric lines, trees, parks, fields, cultivated lands.
  • Different land classifications were shown as area objects in different polygons. The work was performed using ERDAS Imagery software.
  • The ortho-photo image was delivered in TIFF format, and the vectorised land classification file was delivered in ArcView SHP format and AutoCAD DXF format.

Technology used

  • The team used Heads up digitization conversion method.
  • The technique used to create the ortho-photo was- Ortho-photo Preparation using ERDAS Imagery Digitization on Raster image
  • AABSyS is equipped with the right software for the creation of contours and terrain models from the contours.
  • The team at AABSyS used high end, up-to dated software such as AutoCAD, ArcFM, and ERDAS Imagine etc. to complete the given task.
  • AABSyS was in continuous correspondence with the clients in order to solve any queries.

AABSyS Advantage

  • AABSyS has been providing of Orthophotography services to its clients worldwide for many years now.
  • The client, a prestigious technical research institute used the ortho-photo provided by AABSyS in making informed decisions about the concerned area of land.
  • The client appreciated the work done at AABSyS as the deliverables were provided in a time bound, cost effective manner.
  • An extensive quality assurance procedure ensured delivery of perfect 3D Digital Maps.