topic Re: adjust option in georeferencing an aerial photo in Data Management Questions

adjust option in georeferencing an aerial photo

MatteoSpagnolo — Wed, 06 Oct 2010 10:49:21 GMT

Hi guys,
I am trying to georeference an aerial photograph on the basis of a shapefile layer with contours, roads and houses. I attach the image. Effectively, there is a cloud of points in the middle and lower portion of the image where the residual error is very low (< 3 m). However, there also some further away points (N and E) where the error goes up to 7-8 m. These latter, however, are key points because are the only ones I could find there, so I do not want to lose it just for the sake of reducing the RMS. The question is: shall I apply a 3rd polynomial transformation or the adjust one? How does the adjust transformation really work?
Many thanks,
Matteo

Re: adjust option in georeferencing an aerial photo

RobertBerger — Wed, 06 Oct 2010 15:32:45 GMT

Greetings,

Did you see the help documentation for the transformations when georeferencing? There is only a paragraph on the adjust transformation, but I hope it helps.

Robert

Re: adjust option in georeferencing an aerial photo

MatteoSpagnolo — Thu, 07 Oct 2010 07:03:41 GMT

Thank you Robert,
I already look up at the help, but it is very vagues as to what the adjust function really does..
Matteo