The 2D-steganography method based on analysis of two adjacent LSB

In computing, the Least Significant Bit (LSB) is the bit position in a binary integer giving the units value, that is, determining whether the number is even or odd. We do not use this format. In conventional Intel bit ordering, the Most Significant Bit (MSB) is numbered 7 and the least significant bit (LSB) is numbered 0: 2(7) (MSB) 2(6) 2(5) 2(4) 2(3) 2(2) 2(1) 2(0) (LSB) D = d7 d6 d5 d4 d3 d2 d1 d0 For example, if on the record of number D = 131 = 10000011 we invert the MSB = 1 into MSB = 0, then obtain D = 00000011 = 3, but if we invert LSB = 1 into LSB = 0, then distortions are considerably fewer: D = 10000010 = 130. It is common to assign each bit a position number, ranging from zero to N - 1, where N is the number of bits in the binary representation used. Normally, this is simply the exponent for the corresponding bit weight in base-2 (such as in 2(7), 2(6),., 2(1), 2(0)). In this article to reduce the stego-errors we use a pair of numbers D-1 and D-2 and a pair of corresponding LSB d(1,0) and d(2,0).