The principles of random dot stereograms
were first invented by Prof. B. Julesz in early 1960s who made the dual
image random dot stereograms. In 1989, Prof. C. W. Tyler made
a significant improvement to produce single image random dot stereogra
(RDS) which are now found in many popular 3D pictures books around the
world (see TIME (1994) Oct.3, p.52). Dynamic or time-evolving RDS are
also possible and they can be used to display the motion of surface
The technology for constructing those 3D pictures
could be applied in the following areas:-
There are two usual ways to view the stereograms
which must be viewed horizontally:
Research, Education and Industry: 3D mechanical
model, electronic circuit board, architectural model, R&D and educational
demonstration model with 3D viewing.
Information and encryption: protection of
Medicine and Psychology: a very useful tool
for Visual Science research as well as the brain behaviour research.
Fine Art: 3D pictures, postcards, design,
advertising, wallpaper, tiles.
About 10% of the population are always unable
to view the stereograms because of their eye defect or other reasons.
Wall-eyed (or Far-eyed) Viewing Method
X-eyed (Cross-eyed) Viewing Method