Steganography using two sided, three sided, and four sided side match methods
In this paper the two sided, three sided and four sided side match steganography methods are proposed. In two sided side match method the two neighboring pixels such as upper and upper-right corner are exploited to take embedding decision. In three sided side match method the three neighboring pixels such as upper, upper-right corner and upper-left corner are exploited to take embedding decision. In four sided side match method the four neighboring pixels such as upper, left, upper-right corner and upper-left corner are exploited to take embedding decision. In each of these methods the fall off boundary problem (FOBP) and fall in error problem (FIEP) are addressed. The FOBP and FIEP conditions are checked while embedding at the sender and while extracting at the receiver. These methods possess large hiding capacity, better imperceptibility and high security.
steganography side match fall off boundary problem fall in error problem pixel value differencing