Image Steganography: A Review

Steganography can be defined as the study of invisible communication that usually deals with the ways of hiding the existence of the communicated message. If it is achieved successfully, the message does not attract attention from eavesdroppers and attackers. The main objectives of steganography are undetectability, robustness (resistance to various image processing methods and compression) and capacity of the hidden data. These are the main factors which make it different from other techniques watermarking and cryptography. This paper includes the important steganography methods and the main focus is on the review of steganography in digital images.

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