Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!hao!ames!oliveb!sun!terra!brent From: brent%terra@Sun.COM (Brent Callaghan) Newsgroups: comp.sys.mac Subject: Re: 3-D Graphics Question Message-ID: <34960@sun.uucp> Date: Thu, 26-Nov-87 13:03:19 EST Article-I.D.: sun.34960 Posted: Thu Nov 26 13:03:19 1987 Date-Received: Sun, 29-Nov-87 17:14:10 EST References: <1259@saturn.ucsc.edu> <2329@tut.cis.ohio-state.edu> Sender: news@sun.uucp Lines: 26 Summary: Stereo helps. In article <2329@tut.cis.ohio-state.edu>, sarrel@tut.cis.ohio-state.edu (Marc Sarrel) writes: > Recognizing objects in a photograph and contructing a 3D model is > something that the human mind does very well, but that computers are not > able to do yet. I'm sure that the U.S. government would love to be able > to do this sort of thing witht their spy sattelites. However, if they > can, they ain't saying how. I've seen some nice 3D renderings of terrain derived from Landsat images. I saw the first in a magazine - a color image of some dry valleys in Antartica looking obliquely down the valley. The color was from the original image. I believe that the depth information was computed from a stereo pair. On a Nova program on TV a few weeks ago I saw a computer generated movie of a tour of the LA basin. It gave the impression of a ride in a 1,000 mph helicopter. Again, the terrain model was Landsat computed from a Landsat image. I have the impression that the amount of computer horsepower needed to generate these images is well beyond what a Mac can offer. Made in New Zealand --> Brent Callaghan @ Sun Microsystems uucp: sun!bcallaghan phone: (415) 691 6188