Peng Zhenlong, Gui Xiaolin, AnJian, et al. An Information Hiding Algorithm Of Gray Images Based On Suboptimum Weighted Matrix[J]. Advanced Engineering Sciences, 2016,47(6):139-143.
Peng Zhenlong, Gui Xiaolin, AnJian, et al. An Information Hiding Algorithm Of Gray Images Based On Suboptimum Weighted Matrix[J]. Advanced Engineering Sciences, 2016,47(6):139-143.DOI:
Abstract:It is theoretically analyzed that the upper bound capacity of a gray image block with n pixels is not more than ⌊log2 n2+ 2 n+2⌋ binary bits
when not more than 2 pixels are modified and every pixel is modified not more than 1. It is proved that such a weighted matrix can’t be constructed
but a way to construct a suboptimum weighted matrix is proposed in this paper , the matrix can get better balance between the hiding capacity and the imperceptibility compared with the optimum maxtrix
the suboptimum can hide one bit less than the optimum matrix at the worst condition when n is not more than 25 million pixels.