Geoscience Reference
In-Depth Information
Figure 1: The Anoto pattern with digital pen (Anoto)
Applications of this technology include mainly digital forms. There are
systems that can recognize handwriting and allocate the writing in the digi-
tal system according to the writing position on the paper. Likewise the
marking of checkboxes can be recorded. These forms are used today in the
medical domain, in facility management or logistics for instance (Anoto).
Certain challenges arise when printing the Anoto pattern together with a
colored map. The black ink is reserved for the dot pattern and cannot be
used in the map graphics as long as one does not use special coal free ink.
Anoto recommends a limited number of certified printers for which the
functionality of the pattern is guaranteed. The maps for the NavAD project
however are created with means of common uncertified color laser printers
without special ink. Possible interference of the map graphic with the dot
pattern is minimized by adopting the map layout to the requirements of the
pen as far as possible. This means that dark colors in the map are omitted
or replaced by other lighter colors, which poses a challenge for the carto-
graphic design.
The main task for the interaction with the pen and the digital map is to
transfer the relative paper coordinates into absolute geographic coordi-
nates. There are basically two ways to achieve this: One can use the so
called copied pattern, meaning that for all prints the same Anoto pattern
space is used and the pen cannot distinguish between different sheets or
 
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