Greetings I have an image without any GCP's but, teorethically it's in WGS84. I have all pixel positions outside that file. My question is, what should I do in GRASS to rectify/project this image? I thought in two solutions 1- import, using r.in.gdal in a XY projection and rectify. Is it possible to rectify a raster, with i.rectify, using a file outside GRASS (e.g. a text file?) 2- use GDAL to add GCP's points to file and then import to grass already rectified..
Which one is the best solution? THank you Nikos
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