92 
the smallest differences - inclouding printing paper 
and light. 
4. CONCLUSION 
The anaglyph method is not ideal for use on all types 
of maps in general as contours can be used (map 
with contours on the anaglyph map gives even better 
3D impression). 
It is a fact that about 2% of otherwise normally- 
sighted are “stereo-blind”. For unknown reasons 
they can not achive stereo fusion in artificial 
situations. 
Binocular vision can be impaired by stress. In stress 
situation we can loose our stereo perception. 
Because of that and because the anaglyph has 
colour limitations and we also need to wear special 
glasses, the anaglyph method is not perfect for all 
kind of images including viewing of some 
cartographical elements. Maybe is this a reason that 
99,99% of our daily visual presentations are still 
tendered in two dimensions. 
The anaglyph method is ideal for supplementing the 
anaglyphs of aerial photographs and satellite images 
with cartographical theme. Appropriate colour could 
made extraordinary and attractive image acceptable 
to its purpose. 
Other techniques, which are as anaglyph on two- 
dimensional base enable a spatial perception, are 
unacceptable because of loosing intensity, colour, 
resolution, or they are, for now, to expensive. 
* In older literature gray anaglyph is mentioned as coloured or even colour anaglyph, because one stereo 
pair is red and other cyan or green. In that case the colour anaglyph is called three-colour anaglyph. 
References from Journals: 
Bahr, A., 1993. Anaglyphen. 3D-Magazin, 4/93, pp. 30-32. 
Brehmer, E., 1993. Anaglyphen - noch zeitgemäß? 3D-Magazin, 4/93, pp. 19-26. 
Burkhardt, R., 1994. Bunte Anaglyphenfotos. 3D-Magazin, 2/94, pp. 25-30. 
Finsterwalder, R., Kauper, R., 1996. Digitale Herstellung von Stereokarten - gezeigt am Beispiel der 
topographischen Gletscherkarte "Nevado del Tolima 1:25000". Kartographische Nachrichten, 5/96, pp. 175- 
179. 
References from Books: 
Kraus, K., 1988. Fotogrametrija. Book 1. IRO Naucna knjiga, Beograd. 
Robinson, A. H., Morrison, J. L., Muehrcke, P. C., Kimerling, A. J., Guptill, S. C., 1995. Elements of 
Cartography. John Wiley & Sons, Inc., New York. 
Valyus, N. A., 1966. Stereoskopy. The Focal Press, London. 
Watkins, C., Marenka, S. R., 1994. Virtual Reality Excursions. AP Professional, Boston. 
References from Other Literature: 
Cucek, I., 1953. Fotogrametrija. Part 2: Stereoskopija in vrste fotogrametricnih posnetkov. Tehniska visoka 
sola v Ljubljani, FGG, Ljubljana. 
EPSON, 1994. The theory and practice of color. EPSON Deutschland GmbH, Düsseldorf.