Considering the practicability and simpliﬁcation of space-domain pre-processing for 3D model information hiding, we present an improved carrier pre-processing using interval analysis of values on z-axis for the vertical proﬁle of 3D models. First, the 3D model is scaled and rotated disproportionately according to ﬁxed size and angle respectively, and the vertical proﬁle can be obtained by horizontal mapping. Second, the vertical proﬁle is mapped into the two-dimensional coordinate system and the values on the vertical axis can be determined using a ﬁxed step size. Last, the vertical values are converted into binary numbers with interval constraints according to the ﬁxed threshold. By disproportionate scaling with ﬁxed size, the algorithm can be effective against the scaling attack. According to the ﬁxed rotated angle and step size, the data can be embedded in redundancy of the whole model and the algorithm can be robust against cutting. The experimental results illustrate that, being satisﬁed the characteristic of carrier, our algorithm is of stronger robustness against the random noise under 0.2%, re-meshing and non-uniform simpliﬁcation compared with similar algorithms
Digital Object Identifier (DOI)
Shuai, REN; Tao, ZHANG; Tao, YANG; Li, SUO; and Yuan, KANG
"An Improved Space Characteristic Analysis Algorithm for 3D Model Information Hiding Based on Proﬁle Analysis,"
Applied Mathematics & Information Sciences: Vol. 11
, Article 51.
Available at: https://dc.naturalspublishing.com/amis/vol11/iss2/51