Background

Screen

Projector

- One projector - - Two projectors -

- Tiled projectors -

Screen

Projector

A user is allowed to hold up a projector and turn it freely.

Aim of this study

Brightness of screen

Brightness of screen

Pm = fS( – /2, D )

Pn = fS( + /2, D )

fS( , D ) gives the brightness at C.

Brightness of screen

Panning Panning + Tilting

Look of our system Framework of our systemLook of our system Framework of our systemCamera

Projector

Screen

Map Viewer

Map Viewer Map Viewer (our system + Google Earth)(our system + Google Earth)

Map Viewer

Panning the projectorRight and Left

A user is allowed to see the map by handling the projector.

Stepping back

• Technique to locate a projector by using difference in brightness on the screen.

• Map Viewer to see the map by handling the projector.

Conclusions