A Review on 3D Image Watermarking and Quality Assessment

Abstract

The increasing amount of research on watermarking over the past decade has been largely driven by its important applications in digital copyrights management and protection. Digital watermarking is the act of hiding a message related to a digital signal (i.e. an image, song, video) within the signal itself. It is a concept closely related to steganography, in that they both hide a message inside a digital signal. However, what separates them is their goal. Watermarking tries to hide a message related to the actual content of the digital signal, while in steganography the digital signal has no relation to the message, and it is merely used as a cover to hide its existence. With the emerging of low cost 3D display devices, different kinds of 3D applications and the amount of 3D content are booming up, recently. Effective digital watermarking systems for 3D content protection will play an important role for developing and promoting the 3D entertainment industry. The proposed 3D watermarking technique employs the method of slice extraction from a 3D volume. An obj file is used and the wave front object data is obtained.DWT technique is used to embed the secret binary data into one of the extracted slices. The inverse operation is performed at the receiver using the same secret key used at the transmitter. Finally, the watermark is extracted and the quality measures of the reconstructed image is calculated.