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BRIT_GRD to WGS84

  • Thread starter Thread starter Aviasim
  • Start date Start date
A

Aviasim

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Hi Everyone!

Just want a confirmation here, I re-projected some imagery from BRIT_GRD format to WGS84 for use in the sim (FSX), I used Global Mapper V15.2 for this. However, after it's re-projected the imagery looks stretched, as shown in the picture below.. is this correct? if not, where am I going wrong?

rgrgrgrg_zpscgmubdck.png
 
Hi Darren:

When aerial imagery is projected to Geographic (Lat-Lon), WGS84 for use with ex: FS SDK Resample ...it will indeed look compressed vertically and rotated between 1-to-3 Degrees clockwise:

British Grid WGS84

aviasim_newcastle_uk_os_grid_wgs84_query-british_grid_wgs84-jpg.30558


Geographic WGS84

aviasim_newcastle_uk_os_grid_wgs84_query-geographic_wgs84-jpg.30560


FYI: The FS terrain rendering engine will then re-project and drape that imagery to fit the local ground within the FS 3D spheroid world model at run time.


http://desktop.arcgis.com/en/arcmap/10.3/guide-books/map-projections/great-britain-national-grid.htm

http://communityhub.esriuk.com/geox...te-systems-and-projections-for-beginners.html


Hope this helps ! :)

GaryGB
 

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