[Gdal-dev] NITF ICHIPB Extension?

[William Lyons]

>The GenImgProjTransformer() will use an RPC if there is no geotransform
>or GCPs on the source image, but I suspect that isn't your question.
>If the first "image" space is an RPC controlled image, what is the
second
>image?  I believe that the GenImgProjTransformer is currently 
>asymmetric, in that it allows the source image to use geotransform,
gcps
>or RPCs but assumes the target image is strictly geotransform based.
So
>you couldn't relate pixel/line locations in two RPC controlled images
with
>that transformer. Of course, the GenImgProjTransformer isn't really all
>that complicated.  You can use it as an example to build a particular
>transformer you need yourself.

Frank,

I'm thinking about trying to fake a geo-transform between the two image
spaces.  But, I'm not 100% sure what the 6 floats in the geo-transform
really mean.  Could you enlighten me?

Thanks,

William Lyons