### Exploiting modification direction steganographic algorithm

Reference paper x. Zhang and s. Wang, "Efficient steganographic embedding by exploiting modification direction," IEEE Commun. Lett., vol. 10, no. 11, pp. 781–783, Nov. 2006. Secret information for the 2n+1 binary number, carrier length n. Embedding change up carrier 1 (+1-1),...隐写 Matlab