qgib
commented
13 years ago Author Name: Alister Hood (@AlisterH)
(Someone asked about this on the user list a week or so ago. I thought there was already a ticket, but if so, I can't find it)
No. Reading the message again I think I misunderstood. They actually wanted to be able to make the corners of a the raster image snap to a vector grid http://lists.osgeo.org/pipermail/qgis-user/2010-December/010634.html
Author Name: Alister Hood (@AlisterH) Original Redmine Issue: 3361
Redmine category:digitising Assignee: nobody -
(Someone asked about this on the user list a week or so ago. I thought there was already a ticket, but if so, I can't find it)
It would be useful to implement raster edge detection to allow for snapping to raster layers, both when digitizing and when georeferencing.
The [[AutoGCP]] plugin must be using edge detection, so maybe some of the work is already done. Or maybe some code could be borrowed code from another program such as "Hugin":http://hugin.sourceforge.net/. (Hugin is a panorama maker that allows snapping when manually creating control points. But Hugin uses wxWidgets.)