(a) Embedding and (b) Extracting Process

Research about 3D Steganography

Redesigns of the 3D printed gun
3D Steganography talk by Dennis de Bel
3D Steganography 3D printing project by Dennis de Bel
Pattern based 3D image Steganography
Embedding data in 3D models
A High Capacity 3D Steganography Algorithm
A High-Capacity Data Hiding Method for Polygonal Meshes?
Object Steganography, Noah Feehan (2012)
Disarming Corruptor
pirating 3d prints by listening to the printer

Questions to think about

Which part of the collection should be hidden? Why?
How to link with the X-Lib?
Based on which metadata variables are the shapes created?
Which feature would transform the 3D generated shapes into 3D printable files?
Who is using it? Only PZ?
What is the most important features?
Where would be situated? local? networked? physical space?
When would it be available? Temporary? Always?

Project proposal

3D steganography version of the library
3D shapes printed with the 3D printer from the school
circumvention of censorship
simhash process + MD5 Hash - showing the visability in the 3D shape (shows the evolution of the collection)
with a 3D scanner it will be possible to access the collection of the library again
mirroring and visualising the collection
alternative way of looking at the collection
compression
time capture in 3D file

What would be an alternative way of looking at the collection?

An additional feature of the X-Lib is the 3D steganography library based on WebGL. Parts of the collection such as links or PDF's are transformed based on the metadata into 3D shapes. Through a stenography script the source link (simhash or MD5 hash) will be decrypted inside of the 3D shape. During the transformation phase the interface generates an encryption code as well. The 3D generated shape will be possible to 3D print as well. With help of a 3D scanner the 3D shape could be scanned and with the encryption code the original content would be revealed. This project explores new possibilities of mirroring, visualising and circumventing of censorship of digital libraries in physical manner.

Steps to take

→ Writing the source code of creating 3D shapes based on metadata
→ Writing the source code of 3D steganography (MD5 hash or sim hash), which would decrypt informations in 3D shapes
→ Writing the source code for code generator
→ 3D printing + 3D scanning testing
→ WebGL interface to create
→ Testphase of the website + 3D printing + 3D scanning
→ Project documentation
→ Presentation preparation

Resources

A High-Capacity 3D Steganography Algorithm With Adjustable Distortion
3D image watermarking
Watermarking of 3D Meshes using Matlab
3D printing
Matlab 3D printing
Pure Javascript demo code for parsing and rendering STL (ascii and binary) files