From: "Mark A. DeLoura" Subject: Re: TECH: Optical motion tracking for a Rave? Date: Sat, 03 May 1997 10:56:17 -0700 Message-ID: <336B7C41.6B0FA0C@satori.org> Organization: Altopia Corp. - Affordable Usenet Access - http://www.alt.net Brandon Van Every wrote: > > Problem: while at a club tonight, I realized just how much light > interference there really can be. Sometimes someone strobes a white light. > Other times there's ambient colored lights. ... ... > Anyone have any suggestions as to how to do this in a "noisy" lighting > environment? > Particular colors? Special reflective materials? Infrared? That sounds like a good observation, but it doesn't have to be a disadvantage. In a rave environment, it would be exceptionally difficult to track all those reflective spots anyway-- you certainly aren't going to be able to keep them all in the frame at any one time, so it'll be hard to have much continuity in your tracking. Too many people bopping around. :-) But there should be enough continuity to make the effect interesting, even if you are only able to track 20% of the spots 20% of the time. And if that's the case, you may as well incoporate spotlight glare, neon tubes, whatever, into your algorithm. Those things will likely be just as continuous as your spots, maybe more so. It sounds like an interesting experience, I'll keep an eye out for your rave. :) ---Mark -- Mark A. DeLoura madsax@satori.org Seattle, WA