Abstract
Steganography has become a preferred technique these days to successfully hide secret messages. Various research has been done in the past to justify and analyze suitable types of cover file, such as images, audio, videos, etc. Advancement in the image-processing domain has opened various possibilities of using three-dimensional (3D) images as cover files. In this paper, a systematic study of the research work done on 3D steganography in the last fifteen years has been carried out. The study is divided into different sections based on the types of algorithms used, additional security features, evaluation parameters, etc. Moreover, certain steganalysis techniques that are applicable for 3D steganography are also discussed.
Highlights
Introduction of3D Steganography Techniques.Steganography plays a significant role in secret information transmission and has garnered considerable attention from scholars for years
Experimental results showed that 256 bits of secret data could be concealed inside the carrier without degrading the visual quality of 3D
The study reveals that 3D steganography is dominantly implemented in the transform domain, where robustness was the prime objective; the spatial domain 3D steganography techniques dominated to achieve high capacity
Summary
Steganography plays a significant role in secret information transmission and has garnered considerable attention from scholars for years. A variety of options are in practice for the use of different types of multimedia files as cover. 3D objects have been gaining popularity as they provide a good opportunity for multimedia content. The features of 3D objects are prompting researchers towards 3D steganography, away from traditional digital multimedia files such as text, image, inaudible frequency, and video in their native forms [1]. The 3D multimedia files can hide a large amount of secret data
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