Geography Reference
In-Depth Information
Fig. 18
Mirrored system working with a semi-reflective glass (from Sigrid
2010
)
In the USA for the rapid generation of tactile street maps a web-based software
tool was developed in the scope of the TMAP (Tactile Maps Automated Pro-
duction) Project which was initiated by Joshua A. Miele in California in 2003. The
user can generate his/her own map by defining the location and size of the final
tactile map interactively via web map service. The user either can then print the
map him-/herself with a Braille printer or send a request and get it by mail
9 Holography
Holographic methods allow use of all bi- and monocular depth cues. Since this
technology enables the generation of 360 parallax holograms they are considered
full-3D visualisations. It is one of the techniques with the highest potential for the
creation of truly three-dimensional geovisualisations, also including transportable
displays.
For holographic visualisations both the intensity of light and the phase infor-
mation is stored. Therefore, coherent light is required. The wave field which
contains the information about the captured object can be completely recon-
structed, implying that the viewer sees the object as it has been recorded (Schenkel
1998
; Schmid
1999
). Holography as such, however, is a very complex technology
