[gdal-dev] RPC orthorectification accuracy issues.

[Pablo d'Angelo]

Dear GDAL Developers,

i have recently compared the results of our internal RPC based 
orthorectification software and have found several difference, which I 
think are due to various "corner" vs "center" of pixel issues in the RPC 
transform code. This lead to significant shifts when using lower 
resolution DEMs, such as SRTM, particularly in hilly and mountainous 
regions.

I have prepared an analysis and patches to fix these issues at:
https://trac.osgeo.org/gdal/ticket/5993

However I'm not very familiar with the GDAL development workflow. Should 
changes like those be discussed on the list, or just added to a ticket?

Best regards,
  Pablo d'Angelo

-- 
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Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Earth Observation Center | Institut für Methodik der Fernerkundung | Oberpfaffenhofen | 82234 Weßling

Dr.-Ing. Pablo d'Angelo
www.DLR.de/eoc