Hi list, I found this really nice paper, "An Integrated Toolbox for Image Registration, Fusion and Classification" writen by Marcus in 2005. http://gisws.media.osaka-cu.ac.jp/grass04/viewpaper.php?id=37 The question is, where can I find the modules needed to do an Image Registration by Homography? (i.linespoint and i.homography) Thanks!