[Geotiff] RPCs in GeoTIFF

[Frank Warmerdam]

Folks,

There has been interest from various parties over the years to 
incorporate support for storing RPC (rational polynomial coefficients)
information in GeoTIFF format.  RPCs provide a model for mapping
from (lat,long,height) to a (row,column) location in an image and are
used for a variety of raw image products from the major commercial
vendors as well as various military products.  

The effort is being lead by the ASPRS Softcopy Photogrammetry 
Committee. 

I have drafted a first round proposal on how this could be done in
GeoTIFF (basically just add a new TIFF tag to hold all the RPC info)
at:

 http://geotiff.maptools.org/rpc_prop.html

I would be interested in feedback and suggestions from the GeoTIFF
user community.  

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent