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This node will create stereograms, which are repeating images that have 3D surfaces encoded within them in such a way that the hidden surface can be seen by gazing past the image.  The images generated by this node will be vertically seamless, but not horizontally seamless.



Stereogram Nodes

The Stereogram node will encode a 3D surface within a repeating pattern.



Stereogram Example

To see the hidden surface, allow your eyes to relax and gaze behind the image

until the two dots appear to merge to form a third one between them.










The image within which the hidden surface will be encoded.


A height map defining the 3D surface to be encoded within the stereogram.










This property scales all values of the input height map by a given factor to quickly change overall elevations.  Entering a negative value will reverse elevations.  Values further from zero cause the encoded surface to appear deeper.  This value should be kept relatively small otherwise the surface may become hard to see.


Controls the number of times the input background image is repeated during the formation of the stereogram.  In order for the surface to be easily seen, the distance between two repetitions should be very roughly half the distance between your eyes.  This means that the Repetitions property must be set according to how large the stereogram is eventually to be displayed.  The example stereogram above used a Repetitions of 5, but if it was to be printed on a poster then 20 or more repetitions would be needed depending on the size of the poster.




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