The approach discussed is based upon single
projectors for reasons of cost and simplicity, this does
however limit the resolution of the projected display.
This resolution limit is another feature of the human
visual system that is not fully utilized on most projected
displays. Fortunately SXGA+ (1400x1050 pixel)
resolution is now available at commodity prices, and
there are appropriate HD projectors are being released to
satisfy the home cinema market.