Since you are using aerial images: do you need orthorectification? In that case I guess ILWIS would be your best bet, although GRASS also supports it (I haven't tried that myself though).

Work flow for ILWIS is described here: http://spatial-analyst.net/PDF/TN_Ortofoto_in_ILWIS.pdf [<-added missing F of PDF!, a less than six character edit. Hence adding these extra words.]

Since you are using aerial images: do you need orthorectification? In that case I guess ILWIS would be your best bet, although GRASS also supports it (I haven't tried that myself though).

Work flow for ILWIS is described here: http://spatial-analyst.net/PDF/TN_Ortofoto_in_ILWIS.pdf

Since you are using aerial images: do you need orthorectification? In that case I guess ILWIS would be your best bet, although GRASS also supports it (I haven't tried that myself though).

Work flow for ILWIS is described here: http://spatial-analyst.net/PDF/TN_Ortofoto_in_ILWIS.pd

Since you are using aerial images: do you need orthorectification? In that case I guess ILWIS would be your best bet, although GRASS also supports it (I haven't tried that myself though).

Work flow for ILWIS is described here: http://spatial-analyst.net/PDF/TN_Ortofoto_in_ILWIS.pdf [<-added missing F of PDF!, a less than six character edit. Hence adding these extra words.]