On November 22, 2005 10:51 am, Joacim Persson wrote: > How about simply taking photos from various angles, but document the exact > position from which each photo is taken? From that it should be possible to > calculate the position for a number of points with (hopefully) fairly good > precision. I don't see how that's going to work unless one has a fisheye lense and is able to take pictures with exactly 180 degrees view.
> If the photographing method is standardised, it could even be possible to > write a script for the calculations. Like snaps taken 30° apart from a > defined distance. Identify the same spot on the craft in two or more > pictures etc... > > Use the same lens for all photographs. Take also a photo of a grid so you > know where you have the angles in pictures taken with that setting. > > The high-tech method would be using a laser scanner. ;) Laser huh? Last year, some people in the upper year in my faculty made a device called "Geopod". It can measure the range and angle for points on a building. It has a fish eye lens at the top, which is tied to a digital camera, as well as a mirror and a laser range finder at the bottom. Using a labtop connected to the device, one can specify points on the photograph taken by the digitial camera for measurment, and the mirror will rotate to allow the laser range finder to calculate the range of the points. Using the data gathered, one can reconstruct the building (or a room) in a computer. It is not exactly a high tech device, but the components used to build it are darn expensive. Beside, I doubt one can bring such a device to an airshow without arousing suspicion. Ampere _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
