Table 1 Summary of the data hiding techniques in [28,29,30,31,32,33] and the proposed method (inspired by [30, 31])
From: Reversible data hiding with segmented secrets and smoothed samples in various audio genres
Evaluation factor | Research in [30] | Research in [32] | Research in [33] | Method of [31] | Proposed method | |
|---|---|---|---|---|---|---|
Cover (carrier) | Image | Audio | Audio | Audio | Audio | Audio |
Interpolation | NMI | NDDI | None | None | Linear | Linear |
Payload size | Dynamic static | Dynamic | Static | Static | Dynamic | Dynamic |
Embedding | \(\overline{y_{ij}}'=y_{ij}+b\)\(\overline{y_{ij}}'=y^T_j-y^T_{ij}\)\(\quad \quad mod\quad 2^k+b'_l\) | \(\overline{y_n}'= {\left\{ \begin{array}{ll} \overline{y_n}-b_i', \\ \quad if y_{n-1}>\overline{y_n} \\ \overline{y_n}+b_i', \\ \quad if y_{n-1}<\overline{y_n}\\ \overline{y_n}, \\ \quad if y_{n-1}=\overline{y_n} \end{array}\right. }\) | Improved RDE | \(y'_i=y_i\)\(e_i+b\) | \( \overline{y'_j}=\overline{y_j}+p_{n\_i}\) | See (6) |
Reducing | No | No | No | No | Yes | No |
Smoothing | No | Yes | No | No | Yes | See (7) |