The WearComp invention described in IEEE Computer, Vol. 30, No. 2:
http://wearcomp.org/ieeecomputer.htm
(an historical account was given in IEEE ISWC-97, Oct.'97, and is also online
at: http://wearcomp.org/historical/index.html) forms the basis for HI.
The evolution of the apparatus of this invention is depicted in Figure~1.
\begin{figure*}
  \centerline{
    \vbox{
      \hbox{
         \makebox[.52in][c]{\fig{dusty/pushbroom6502_1_und_grey.eps,height=1.3in}}
         \makebox[.7in][c]{\fig{netcam/steve_1980_closeup_und_grey_crop.eps,height=1.3in}}
         \makebox[.86in][c]{\fig{list_arts/wearcomp4darcamgreyund.eps,height=1.3in}}
         \makebox[.53in][c]{\fig{stevedustingtilfordcar_crop_grey_sharp.100dpi.eps,height=1.3in}}
         \makebox[.86in][c]{\fig{netcam/steve1985_2_und_grey.eps,height=1.3in}}
         \makebox[.9in][c]{\fig{netcam/steve89_und.eps,height=1.3in}}
         \makebox[1in][c]{\fig{netcam/visualfilter1width480.eps,height=1.3in}}
         \makebox[.9in][c]{\fig{netcam/steve_entrance77_32.eps,height=1.3in}}
         \makebox[.84in][c]{\fig{netcam/steve00_at143_crop_und_grey.eps,height=1.3in}}
      }
    }
  }
  \caption{Evolution of the apparatus of the `WearComp' invention from
           the 1970s to the present--day version built into ordinary--looking
           eyeglasses
           \label{fig:wearcompevolution}
          }
  \label{fig:wearcompdef}
\end{figure*}


