Survey: Image Steganography and its techniques
Keywords:
Steganography, stego-image, Least significant bit, Pixel value differencing Spatial domain methods, Transform domain techniques, Distortion techniquesAbstract
"Steganography” is a Greek origin word which means “hidden writing”. Steganography is the most important
area of research in recent years. Steganography is an art and the science of embedding secret information into cover media
like, text, image, video, audio or multimedia content for the military communication, authentication, security and many other
purposes. It deals with the ways of hiding the secret communication message and its existence from the third person. In
image steganography, secret communication is achieved through embedding a secret message into an cover media and
generates a stego-media having hidden secret information. There are several image steganography techniques are used each
have its advantage and disadvantage. This paper discusses various image steganography techniques such as least significant
bit, discrete wavelet transformation, Pixel value differencing, discrete cosine transformation, Masking and filtering etc.
