[Retracted] Reversible Data Hiding of Digital Image Based on Pixel Combination Algorithm

<div>Comparison of midpoint filtering results of images under different template sizes. (a) SEM image: from left to right, filter mask sizes are 3 × 3, 5 × 5, and 7 × 7, respectively, and (b) FIB/SEM images: from left to right, the filter mask sizes are 3 × 3, 5 × 5, and 7 × 7, respectively.</div>

Advances in Multimedia

fig4

Figure 4

Figure 4: [Retracted] Reversible Data Hiding of Digital Image Based on Pixel Combination Algorithm 