| Orthorectification (quickbird), RPC, APM [message #52525] |
Tue, 06 February 2007 03:22 |
tochaf
Messages: 6
Registered: February 2007
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Junior Member |
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Hello
I can still to consider me a rookie in idl (also in the English
language like you cant see in the next lines) and I like to do the
orthorectification of Quicbird images in batch mode. I think the
envi_doit of this function is not available . It would like to ask to
this "community" if somebody could help me:
1 -To read the fyle .rpb where we cant find the RPC (rational
polynomial coefficient)
2-Understand to made use of these values, that is, the one that they
correspond in the mathematical equation
3- The best form to read a DTM (digital Terrain Model)
4- To compute this indexation of (column, linha) - (XYZ) in IDL with
the RFM (rational uncional Model) like said OGC. In short, what I cant
do for catch each pixel and after the calculation write the new
position of witch pixel.
Orthorectification with APM (affine projection model) with control
points, would be also interesting for me to make this points
therefore all the aid inside of this subject would be also very well
coming
1 - a procedure for the find the parameters of this transformation
2 - As to compute these data, lines and columns, for the attainment
of its new
Positions.
1- excuses if I ask this in the wrong place
2- excuses for my English and the number questions, but any help for
any these subjects is welcome.
Best regards
Antonio Ferraz
ferraza@informsrl.it eg0208@mat.uc.pt
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