Detecting LSB steganography in color, and gray-scale images
Jessica Fridrich, Miroslav Goljan, Rui Du · IEEE Multimedia · 2001
We describe a reliable and accurate method for detecting least significant bit (LSB) nonsequential embedding in digital images. The secret message length is derived by inspecting the lossless capacity in the LSB and shifted LSB plane. An upper bound of 0.005 bits per pixel was experimentally determined for safe LSB embedding.