Delete comment from: Procrastineering - Project blog for Johnny Chung Lee
If you went with the wiimote on head idea you wouldn't be tracking the absolute position of the two sensor bar dots but rather their position relative to each other.
If you rotate your head, the dots won't move much relative to each other because your angle of view is close to the same. However, when you move from in front of the monitor to the side, the dots will get closer together and their "size" (distance) will start to grow apart from one another.
Tracking their relative positioning would allow you to determine where the user is, relative to the screen which is all we care about.
A curved lense of some kind may be a cheaper solution, but for an end-user it's a very large undertaking to modify a wiimote and something that will likely cause it to stop working with their Wii. A wiimote array on the other hand is something that is likely free for many users (people who already have 2 Wiimotes for their Wii) and doesn't require that they risk damaging or have to deal with modifying any hardware.
Dec 25, 2007, 8:31:00 PM

