Curtis L. Olson wrote: > Frederic Bouvier writes: > > I am playing with SRTM-1 too. I started terrafit with --error=2 and > > --maxnodes=2000 ( after the patch to terrafit.py ) and I must say > > it is very impressive to see in action. > > > > But I found glitches that are quite obvious, and that do not appear > > in the scenery made by Alex Romosan ( certainly with default options, > > before the patch ) : it seems that the buildings are buried in the > > terrain, with small pikes. > > > > Very visible in downtown SF, between the buildings : > > http://perso.wanadoo.fr/frbouvi/flightsim/fgfs-sf-1arcsec.jpg > > but also visible in Oakland. > > > > In this one, > > http://perso.wanadoo.fr/frbouvi/flightsim/fgfs-ksfo-1arcsec.jpg > > the maintenance hangar created a hill around it. San Bruno mountains > > are quite impressive though. > > I think what you are seeing is the down side to fully automated data > scaning/remote sensing. > ...
> If you want to try to automatically smooth the data, you then > sacrifice quality (kind of like bluring a picture.) > > We might need to have the ability to go in and hand edit data but if > we do that we will probably toss accuracy out the window -- maybe -- > unless someone has a higher standard they can reference against. I quickly hand edited the terrain with fgsd. Not perfect because I would need a 1:25000 map, but at least I am able to clear some spikes. It is a chore but might be worth for dedicated areas ( those where we put buildings ) http://perso.wanadoo.fr/frbouvi/flightsim/fgfs-sf-1arcsec-edited.jpg http://perso.wanadoo.fr/frbouvi/flightsim/fgfs-ksfo-1arcsec-edited.jpg > It's a *hard* problem ... but I don't want to be the one to go tell > NASA/NIMA their data sucks :-) because it's the best thing going right > now by a long shot. I don't want too... unless they release something for Europe ;-) > Maybe the data would have come out better if the astronauts hadn't > emailed it back to earth as executable attachments using MS Outlook. > Ok, cough, sorry, I should not have included this last paragraph. :-) This mail was sent with Outlook Express ;-) -Fred _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
