I' quite a novice user of Grass and trying to use it for a non
conventional task:
I need to register a series of images of an almost planar object to find
out modification.
I' ve decided to use Grass in the following way:
1) take one of the images that has metric references , using i.points I
set up a sereies of reference points on the image and then I use
i.rectify wint secon order polinomial to warp the image ino a "rectiied,
metric one"
(the coord system is XY, planar)
2) for all the other images, I use i.points on the rectified image
Now the questions:
1) are i.rectify and i.point able to handle homographies?
I' ve found a nice reference paper on
http://gisws.media.osaka-cu.ac.jp/grass04/viewpaper.php?id=37
but I did not fund anything in grass62 neither browsing thru CVS.
Are these modules needed to handle homographies transforms ?
2) there are also other modules like photo.camera photo.2image
photo.2target photo.rectify I did not used them because they reqired
camera parameters I do not have.
Are they able to handle homographies?
Thanks in advance
Luigi
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