1. A method, comprising: subjecting, in a device capable of performing image processing, an original, pixel domain image to an Integer Wavelet Transform (IWT) to obtain a matrix of original IWT coefficients; selecting a plurality of said original IWT coefficients for embedding of data therein; establishing a shift value for said plurality of original coefficients; establishing a plurality of sign factors corresponding to respective ones of said plurality of original coefficients; and for each of said plurality of original coefficients, establishing a marked coefficient, said marked coefficient corresponding to said original coefficient and to said sign factor corresponding to said original coefficient, said marked coefficient being set equal to a value of said original coefficient added to a product of a) said sign factor corresponding to said original coefficient and b) said shift value.