[GRASS-user] Using GRASS to ortho-rectify satellite imagery

[Mike Willis]

I looked in there for i.topo

On Wed, Jul 1, 2009 at 3:06 PM, Alex Mandel<tech_dev at wildintellect.com> wrote:
> Mike Willis wrote:
>>>> Hi can anyone quickly tell me if it is possible to orthorectify
>>>> satellite imagery using GRASS?
>>>>
>>>> Cheers!
>>>>
>>>> Mike Willis
>>
>>> what about i.rectify - Rectifies an image by computing a coordinate transformation for each pixel in the >image based on the control points. ?
>>>
>>> http://grass.osgeo.org/grass64/manuals/html64_user/i.rectify.html
>>>
>>> best regards
>>> helli
>>
>> Maybe - but my real purpose is to remove distortions caused by
>> topography. Plain rectification will not achieve that. I looked at
>> orthophoto but a camera model is required (air photos). I am needing
>> to do satellite images (usually, but not always ASTER).
>>
>> Mike
>
> Maybe this info will help
> http://josef.fsv.cvut.cz/WIKI/grass-osgeo/index.php/Image_processing
>
> Alex
>

I looked further from the line "Minnaert or other corrections with
i.topo.corr (from GRASS AddOns)" but couldn't see any further
reference to i.topo.corr (or rectify3) etc.

Mike