On 08 Dec 2002 17:47:18 -0500, Luke Scharf <[EMAIL PROTECTED]> wrote in message <1039387637.8399.40.camel@dhcp-11-5>:
> On Sun, 2002-12-08 at 16:33, David Megginson wrote: > > Luke Scharf writes: > > > > > I figured that I'd take the pictures myself at whatever > > > resolution makes sense. It's a good excuse to go flying. :-) > > > > Can you take pictures straight down? I guess it would be possible > > with a high-winged plane and a ferociously-steep bank. ..take your pix at intervals to have a say 80 % overlap to do a 3d stereo scenery. The intervals should be a function of height over the ground rather than altitude, and groundspeed, to keep those overlaps fixed. Also, we tend to see the walls of buildings at a distance, with the far side walls and roofs "overhanging the hidden streets", so the next generation 3D scenery will need _slanted_ snaps. ..rsync'ing with TerraGear to save disk space? TerraGear to help find un-built scenery? ;-) > I usually rent a Cessna 172, so a well-coordinated 45 degree bank > might work. Once that's established, my passenger might be able to > hold the camera so that it's perpendicular to the ground. Or, I could > just find a plane with a camera port. ..aside for the coolness factor, yes. You have the 2 mains legs and a ditto pair of wing struts. At least the mains legs can usually carry lightweight cameras, the wing struts will of course provide a smoother ride for the cameras, assuming the extra weight don't unduly move strut or other structural resonance frequencies. On buying your own 150, you can put a wee camera in between the landing lamps. ..then we have the club planes, with a well done scheeme, we can have club people help build more scenery. This warrants developing an airborne scenery builder kit. In this same line of thought, I propose Oshkosh, WI as a good place to build soon, to help reel in the 1.1 mill EAA membership, details us in http://eaa.org/. ;-) > > > So, assuming that I have a TIFF or a JPEG, where do I go next? > > > > Don't use JPEG -- stick to something lossless. You'll have to ..tiff will do fine on (lossless!) compression. Png? > > download TerraGear and dig through the source, looking for > > explanatory comments, unless Curt documented it all somewhere. ..also have a look at http://autopilot.sourceforge.net/ to place your pictures on our planet model, I suspect some "six state Kalman filter producing attitude estimates from the accelerometer and gyro readings", might be helpful. Myself, I'd like their video code as a future FG --with-low-end-svga-video compile option for my old laptops, and they could use our OpenGL video for their ground station nodes. ..http://www.u-dynamics.com/aerosim/ is a commersial alternative. > I'll give it a shot! Thanks! > > > > I'm struggling to get the down payment together for a Cessna > > > 150... Flightgear is a lot cheaper! > > > > Good luck. Why not go for a 140 and do the taildragger thing as > > well? The polished aluminum ones look very spiffy. > > :-)~ > > -Luke > -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
