“…As can be seen in this table, maximum SSIM Table 5 indicates the comparison of the watermarked image and extracted watermark for the proposed method against several baseline approaches (see [29,31,49,52,[57][58][59][60][61][62][63][64] and references therein); in which all methods used 'Lena' as a test image. As is observed from this table, especially compared to the methods of [29,31,49,52,[58][59][60][61][62]64], our proposal obtains better results in terms of PSNR and SSIM. For instance, the proposed method significantly outperforms [29] by 4.2946 dB and 0.91%, respectively, in PSNR and SSIM for watermarked image; 9.8433 dB and 0.62%, respectively, in PSNR and NC for extracted watermark.…”