[gdal-dev] RPC transform

[Ivan Lucena]

Yehiyam,

For that kind of issue my advise is to run in debugging mode. The GDAL 
transformation engine must have an internal pixel geolocation defined. 
It is probably CENTER of the pixel, as in AREA. I am not sure. In that 
case the returning pixel/line refers to AREA and you might need to do 
the adjustment. But again, I would debug it to make sure. We have 
instructions on how to debug GDAL using VS and NetBeans on wiki. I just 
can't find it. I can't find anything about the RPC_DEM either. Where did 
you get it?

Regards,

Ivan

On 1/16/13 7:40 AM, Livneh Yehiyam wrote:
>
> Hi
>
> I have a question about the RPC transform implemented in gdal_rpc.cpp.
>
> If a dem file is specified in the transform options (RPC_DEM) the file 
> is sampled to retrieve the elevation of the transformed point.
>
> In the case where the dem file is a DTED file (which defines 
> AREA_OR_POINT to POINT), shouldn't the pixel/line values in the dem 
> file be offset by half a pixel to get the correct height?
>
> Thanks
>
> Yehiyam
>
>
> ________________________________________
> This message (including any attachments) issued by RAFAEL- ADVANCED 
> DEFENSE SYSTEMS LTD. (hereinafter "RAFAEL") contains confidential 
> information intended for a specific individual and purpose, may 
> constitute information that is privileged or confidential or otherwise 
> protected from disclosure. If you are not the intended recipient, you 
> should contact us immediately and thereafter delete this message from 
> your system. You are hereby notified that any disclosure, copying, 
> dissemination, distribution or forwarding of this message, or the 
> taking of any action based on it, is strictly prohibited. If you have 
> received this e-mail in error, please notify us immediately by e-mail 
> mailto:lawraf at rafael.co.il and completely delete or destroy any and 
> all electronic or other copies of the original message and any 
> attachments thereof.
>
>
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20130116/0c2f8fc0/attachment.html>