Steganography and steganalysis in 3D graphics

il y a 3 ans

Adrian G. Bors - University of York, UK

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Steganography is used for embedding hidden information into various media in such a way that it is not visible. The hidden information is retrived by the owner of a digital key. In the case of this project proposal, the chosen media is represented by 3D graphical objects, represented as 3D vertices joined by edges and polygons. The user should be able to retrieve the embedded information even after the 3D objects are changed by various algorithms, such as mesh compression, or are intentionally attacked, by persons with malefic intent. Such attacks can consist in adding noise, smoothing or other 3D mesh processing used with destructive intention. The information embedded through 3D steganography can be used for copyright protection, authentication. It can be used for embedding information characteristic to graphical characters, which can define their "behaviour" durin animation, similar to the DNA in real life. Steganalysis is used in order to reveal the existence of hidden information in the structure of 3D objects.


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