Buchroithner, Manfred
Physical Properties
These properties are determinated by elements like size, position, colour, contrast e.g.
Gestalt Properties
Similarity, proximity, convergence, e.g. are the more overlapping elements characterising a display.
Cognitive Properties
These properties mean e.g. the visual attraction, figure-ground relation. In general, the intellectual associations
coming from a display and influences the viewer as far as it meets the viewer's expectation.
(Castner & Eastman 1984)
These intellectual attributes of a form of representation are frequently overseen, because instead in cartography
the processing of physical and Gestalt properties belong to the most significant tasks.
But when it comes to the task-specific viewing as in the scope of the above mentioned outdoor activities the
cognitive properties in particular become a strongly influencing component.
The visualisation of the third dimension in a “real” 3D representation causes in a first instance a high visual
attraction. In the continuing visual and cognitive process the noiseless communication process is driven by the
applied combination of the psychological cues, the technical parameters of a display and of the designing
elements.
8 CONCLUSION
The discussion of the single aspects in the background of that the results not completed yet, has indicated that the
for cartography adapted 3D technologies largely unnoticed.
This is especially true for the 3D hardcopies. The reasons for that may to be couched in the absence of the
theoretical foundation. In the connection of 3D representation the cartographic theory of signs cannot meet all
the raising requirements at present.
Therefore the connected consideration of the above mentioned parameters should be the basis for a purpose-
oriented establishment of 3D visualisations.
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