A Formula Adaptive Pixel Pair Matching Steganography Algorithm

Table 2

Comparison of results.

Contents of comparison	EMD[8]	EMD-3[9]	APPM[10]	Proposed FAPPM
Embedding method	Matrix and search	Matrix and search	table look-up	Mathematic method
Notational systems of B-ary	fixed	fixed	arbitrary	arbitrary
Payload (bpp) B=25	2.471	2.471	2.32	2.32
PSNR (dB)	43.9	42.9	48.1	48.1
Need the storage space	Yes	Yes	Yes	No