... extract 8+TC∗18 bits of SH from thelast raw of a stego image Sand get the pattern information ofPHiand PLi from SH data. Then we start scanning the stegoimage from top to bottom. If PHiis ... 15(a), 15(d),15(g),and15(j) are the generated halftone images from theimages in Figure 14, respectively. Figures 15(b), 15(e), 15(h),and 15(k) are the generated stego images with 2072, 2329,3086, ... extracts 8 + TC∗ 18pixels from the last row of stego image S and is denoted asHLi;inFigure 10(c), HLiis then embedded into the stegoimage S with pair-based method and generated another stegoimage...