Volume : VII, Issue : XII, December - 2018

Data Hiding In Images Using Steganography techniques (DCT Method)

Avinash Kumar

Abstract :

 

Data hiding process embeds data into digital media for the purpose of security. Digital image is one of the best media to store data. It provides large capacity for hiding secret information which results into stego–image imperceptible to human vision.

 Steganography is the process of art and science in such a way that no one apart from sender and intended recipient even realizes that the communication is going on. It is also used to authenticate the digital images. Many steganographic techniques have been proposed, all of them make statistically noticeable changes in the properties of the cover carrier particularly when the message payload is high. 

we propose a new methodology of transform domain JPEG image steganography technique that provides high embedding performance while introducing minimal changes in the cover carrier image. The algorithm, named DCT–M3, uses modulus 3 of the difference between two DCT coefficients to embed two bits of the compressed form of the secret message.

The proposed algorithm reduces significantly the number of changes in the cover image; the embedding capacity has been improved by 16.7% approximately while maintaining minimum detectability against blind steganalysis schemes.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Data Hiding In Images Using Steganography techniques (DCT Method) , Avinash Kumar , INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH : Volume-7|Issue-12| December-2018

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