A Secret 3D Model Sharing Scheme with Reversible Data Hiding Based on Space Subdivision

Format-Compliant Selective Secret 3-D Object Sharing Scheme

“…In this section, we compare our proposed method with recent state-of-the-art S3DOS schemes: methods by Elsheh and Hamza [10], Anbarasi and Mala [11], Tsai [13] and Lee et al [14]. Table V presents several properties we want to [10], [11], [13], [14].…”

“…In the scheme proposed by Tsai [13], vertices of a secret 3D object are encoded into a series of integer values using a space subdivision representation of the secret 3D object. The sequence of integer values associated to a vertex corresponds to its coordinates in the space subdivision structure.…”

“…The size in bits of coefficients a i can be estimated using Eq. (13). Table III resumes the size in bits of different coefficients and variables as a function of k for the fixed degradation level D =< p, l = 3 >.…”

“…Elsheh and Hamza [10] Anbarasi and Mala [11] Tsai [13] Lee et al [14] Our scheme compare. Concerning shared data, our proposed scheme, like the method of [13], shares geometry by protecting all vertices since we want to protect relevant geometrical information of the secret 3D object.…”

“…Martín Del Rey proposed a (n, n) multiple secret sharing scheme for 3D objects represented by voxels based on a cellular automata approach [12]. In 2016, Tsai proposed a S3DOS scheme based on reversible 3D data hiding which shares only an approximated geometry of the secret 3D object in cover 3D objects [13]. Recently, Lee et al presented an application case of SS for streaming purposes in order to obtain a group of n 3D objects when at least k of them have been downloaded in high quality [14].…”