[GRASS-dev] lib/vask

[Markus Neteler]

Glynn Clements wrote on 06/19/2006 07:41 AM:

>Brad Douglas wrote:
>
>  
>
>>>Ok, if disposal is out of the question, it will need to be re-written
>>>if vask is to be eliminated.
>>>
>>>      
>>>
>>>>I believe i.ortho.photo will require input from one method or another.
>>>>I don't see it working without interactive input, either.
>>>>        
>>>>
>>>Could you explain why?
>>>      
>>>
>>It is sometimes the case that the imagery being rectified (warped) has
>>no GCPs (ground control points) and sometimes we have to resort to
>>visual inspection and selection of points between images to transform
>>them.  It is also sometimes the case that we have to supplement supplied
>>GPCs (maybe only the corner and center points are provided) to yield
>>desired results.  This makes heavy use of the primitive GUI (images in
>>subwindows, zooming, menus, etc).
>>    
>>
>
>The selection of GCPs should probably be integrated with Michael's
>i.points replacement.
>
>Is there any reason why other forms of interaction (other than visual
>selection of coordinates) would be necessary?
>
>  
>
... not sure - maybe GCPs from GPS measurements in a CSV list?

Markus