A reversible data hiding method free from location map and parameter memorization

Capacity Controllable Location Map Free Reversible Watermarking

“…Table 3 and Table 4 show the maximum capacity and corresponding PSNR(dB) in different threshold value k for four images in Fig.9. As shown in Table 5, the simulation result show that the proposed method is perform better than FUIYOSHI et al [10] in image capacity. With the same embedding capacity, the PSNR of our scheme is higher than FUJIYOSHI [10] et al As shown in Fig.10, the dramatic decline caused by the threshold value k, since when k = 0, the maximum capacity in Airplane is 46377, shown as Table 3, in order to get more embedding capacity, the threshold value is changed to k = 1, the maximum capacity is reach to 70453, this is same as Figs.11-13.…”

“…The test watermark is a random binary string. We simulate the algorithm proposed by FUJIYOSHI et al [10] to compare the performance with our scheme. The definition of the PSNR (Peak signal-to-noise ratio) is shown as follow:…”

“…Table 5. Experimental results of capacity comparison FUJIYOSHI [10] Proposed Maximum threshold k = 8 capacity(bits) capacity (bits) Airplane 63932 223578 Lena 62366 212230 Barbara 32980 174432 Cameraman 10353 244733 Fig . 10.…”

“…In 2010, FUJIYOSHI [10] proposes a reversible data hiding method, used no image-dependent parameter or any imagedependent location map. Instead, the scheme used a threshold parameter to limit embedding range, maintain a certain degree of image capacity but lack of capacity control.…”

Difference expansion and prediction for high bit-rate reversible data hiding

“…19 22 and by Chen et al 23 Finally, a new idea based on pixel prediction is elaborated in a set of recent contributions. Tseng et al 37 study various predictors, while Hu et al 38 improve the location map compressibility, Sachnev et al 39 reduce its size, and Fujiyoshi et al 40 avoid any image-dependent parameter or location map. In Ref.…”