Writing on Wet Paper Based on Human Visual System Characters
Fangchao Liu · 2009
Steganography is an important embranchment of information security domain and is attached importance by a lot of institutes and organizations in many countries.This letter put forward a new steganographic method of writing on wet paper based on human visual system characters,which selects images' wavelet coefficients according with the degree of texture complexity,brightness and sensitivity to noise in the local neighborhood to embed secrete bits in them and achieves the intention of invisible transmission.The receivers need not to know the formulas used by senders and can extract secret bits from carrier images by only doing sample matrixes multiplications.The experimental results of the proposed embedding method show a better performance against the methods of active attacks such as JPEG compression,noise addition and so on.And the security of the new method has improved greatly compared with the classic wavelet steganographic methods because of its template of writing on wet paper.