Information hiding algorithm based on mapping and structure data of 3D model

• Published in: Tongxin Xuebao Vol. 40; pp. 211 - 222
• Main Authors: Shuai REN, Zhen WANG, Dongxu SU, Tao ZHANG, Dejun MU
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal on Communications 01.05.2019
• Subjects: information hiding; obj model; resistance against analysis; two-dimensional discrete Daubechies wavelet transform
• ISSN: 1000-436X

The existing 3D information hiding schemes are not robust enough against the joint attacks,as a result the secret information will be vulnerable and cannot be extracted correctly.In order to solve the above problem,an information hiding algorithm based on mapping and structure data of 3D models was proposed.First,several texture maps of the original 3D models in .stl format were picked from the standard model library,so the backup secret data after twice two-dimension discrete Daubechies transform can be embedded using dbl function just as the watermark.Secondly,the original 3D model in .stl format was operated by frame sampling in wavelet domain to obtain the coefficient in transform domain,thus the secret data was embedded into the corresponding transform coefficient.Finally,the .obj documents with the secret information were generated by multiplying the 2D texture map data and the 3D .stl data matrix based on orthogonal projection.Texture maps and coordinate space of 3D model were both used to embed the se