[Qgis-user] Error in Georeferencer

Agustin Lobo alobolistas at gmail.com
Mon Oct 28 04:52:07 PDT 2013


See
http://hub.qgis.org/issues/8961
Agus

On Fri, Oct 25, 2013 at 4:08 PM, Jukka Rahkonen
<jukka.rahkonen at mmmtike.fi> wrote:
> Agustin Lobo <alobolistas at ...> writes:
>
>>
>> I'm finding wrong, distorted results with qgis 2.0 georeferencer. We've tried
>> with the same set of gcp's in envi and the same polynomial (deg 2) and
>> there the results are correct, but with
>> qgis the result is very distorted. Actually, the errors represented by
>> the red segments in the
>> georeferencer do not correspond with the actual gcps displayed  on the
> reference
>> image in Qgis main display.
>> See an snapshot here:
>> https://dl.dropboxusercontent.com/u/3180464/georef_error.jpeg
>>
>> It looks like if the polynomial were not correctly fit?
>>
>> I've run the gdal commands on the terminal and the result is the same,
>> so this could be a gdal problem.
>> Has anybody found the same problem? Just checking before reporting.
>
> Please send the exact GDAL command that gets created and even better if you
> can put somewhere an original small sample image and expected result that
> you get from envi so someone can repeat. And for comparison everything that
> is needed to repeat what you did with envi too if someone happens to have
> that software available.
>
> -Jukka Rahkonen-
>
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