Abstract
The art and science of using digital images for secret communication is known as image steganography. This paper presents a background on key concepts behind it. A representation of steganography area is graphically and mathematically shown. The origin and history of this area, its important properties, and major applications are outlined. An introduction to steganalysis is provided. Distinctions between steganography, cryptography, and watermarking in terms of technique and intent are briefly discussed. Details of the way images are represented are outlined. Benefits and drawbacks of steganography domains are highlighted. Common approaches used for embedding messages into images are discussed in some detail. Methods used for embedding messages into images are also explored. Current steganography tools are highlighted. A demonstration of how secret information is embedded into an image through the use of available steganographic tools is shown. Comparisons between different image steganography algorithms are also provided.
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