[Gdal-dev] GDALWARP Question

[Frank Warmerdam]

Reinaldo Escada Chohfi wrote:
> Hi GDAL Users,
> 
> I am planning to use the gdalwarp utility to
> geo-reference a number of images in batch.
> 
> I would like to know before hand if it can be
> utilized to warp (rectify) unprojected images.
> That is, can it input raw images with GCPs
> and output geo-referenced rectified (warped)
> Geotiff images, given that it is also provided
> proj, zone, ellps, etc?
> 
> Or it can only be used to reproject and warp
> images that have already been rectified and are
> geometrically correct in a particular projection?

Reinaldo,

First, I would advise you to use gdalwarptest, the new generation
warper.

Second, yes, it can rectify raw images, but it can be a bit tricky
currently to supply the GCPs.  Also, currently only polynomial warps
are supported when operating from GCPs, and only up to 3rd order.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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