I. Review of Lsb Image Steganography Techniques in Spatial Domain

(Markus Kahn, 1995) defines Steganography as art and science of communicating in a way which hides the existence of the communication. In contrast to cryptography, where the enemy is allowed to detect, intercept and modify messages without being able to violate certain security premises guaranteed by a cryptosystem, the goal of steganography is to hide messages inside other innocent messages in a way that does not allow any enemy to even detect that there is a second message present. In this paper we would review various steganography techniques LSB substitution, LSB matching, Adaptive LSB and Pixel-Value Differencing (PVD), Edge detection filter based, Pixel Indicator techniques Component based LSB and Texture based techniques. The review concludes with the need of better steganography technique for color images meeting criteria’s of imperceptibility, robustness and capacity equally. Keywords—Adaptive LSB,Component based LSB,Edge detection filter based Techniques,LSB Matching,LSB Substitution, Pixel Indicator Techniques, Pixel Value Differencing, Steganography. I. REVIEW OF LSB IMAGE STEGANOGRAPHY TECHNIQUES IN