|
What is a Stereogram?
A stereogram is a picture, which becomes three-dimensional, if you
look at it in a certain way.
I only explain how to make some stereograms,
because there are already many sites available on the internet.
Stereo Pairs top
Stereo pairs are two pictures arranged next to each other. They give
you two similar sights of an object as both human eyes do.
Making of them:
Draw two cubes side by side in perspective. Find
the edges of the left cube by going 2 square sides to the right and 2 squares
upwards from a corner of the front square. Go 3 to the right and 2 upwards
for drawing the right cube.
Look at the left cube with the left eye and at the right cube with the
right eye and then "through" the picture. Then the 3D-image of a cube appears
in the center. The cubes outside become blurred.
I suggest to develop the pictures further. In addition
you connect alternatively the cube corners, the centre point of an edge
or centre point of a square. Nice pictures develop in spite of this primitive
method.
Here are two more stereograms of this type. They were drawn with Pbrush
and stored as the type "monochrome bit-map", so that the yellow squares
disappear.
Developped further:
Unbelievable: The 3D-Effekt also occurs in freehand drawings on graph paper.
The following picture arise from repeating
the cubes outside.
The two right and the two left pairs are seen as plain pictures. Therefore
the two ghost images are moved outward and don't disturb the 3D picture
in the centre. (Hint by Helmut Bichler)
You also can draw the two images in the
clolours red/green and can seperate them while looking at with red-green-eyeglasses.
... ... |
You also can use a "wall" to seperate the images.
Then you need a binocular loupe because of the sharpness.
STEREOPTICS - Set of 18 stereooptics, 3D computer drawings
© 1981 ERTHings corp. |
Stereo Wallpapers
top
If you repeat a letter (or word) in a line for
the same distances and change the distances in other lines, then a depth
effect surprisingly appears. The larger the distance between the characters
(words), the further back they will appear.
Small effort, large effect:
You can produce both stereograms with the simple editor, that belongs to
Windows. Each character takes the same space as with mechanical typewriters
in former times.
I collected texts of this kind:
Autostereograms
top
In the 1990's autostereograms became popular. Surprisingly only one
picture is needed to give a 3D impression. In principle an autostereogram
is a combination of stereo pair and stereo wallpaper.
You need the depth map (julia.bmp) in grey colours and the coloured
texture (marmor.bmp) for an autostereogram. They are "joined" with the
help of the program.
|
+
|
|
|
=
|
|
You recognize the word "Julia" floating over a plain background with
the stereo view.
HANNAH
Paul (made with StereoMaker, URL below)
Greta (made with easystereogrambuilder, URL below)
Stereograms on the Internet
top
German
Dipl.-Ing. Leo H. Bräutigam
3D-Fotografie 2000
Dipl.-Ing. Wilfried Wittkowsky
Der 3D-Film
Fabian Januszewski
stereogramm
howto
Günther Koller
Stereo Works
Harald Belyus (Optiker Online)
STEREOGRAMME
Johannes Schmid
Stereogramme
Jürgen Giesen
Stereogramme
Realschule Georg-Eckert-Straße Braunschweig
Räumliche
Figuren sehen
Schweizerische Gesellschaft für Stereoskopie
Stereoscopie
Ulrich Schwebinghaus
Kunst & 3D
Wikipedia
Stereogramm
English
Catos Interactive
Build your own
stereograms
Colin Ord (Magic Moving Images)
New stereogram
3D viewing technique
Fernando Wentland
StereoMaker
Gareth and Peter's SIRDS pages
Sirds
Easy stereogram builder
Wikipedia
Stereogram
References top
Tom Baccei: Das magische Auge, München 1994
arsEdition: Stereogramm, CH-6301 Zug 1994
Thomas Ditzinger: Illusionen des Sehens, SÜDWEST, München
1998
Feedback: Email address on my main page
This
page is also available in German.
URL of
my Homepage:
http://www.mathematische-basteleien.de/
©
Jürgen Köller
top |
