Colour Guided Colour Image Steganography

Information security has become a cause of concern because of the electronic eavesdropping. Capacity, robustness and invisibility are important parameters in information hiding and are quite difficult to achieve in a single algorithm. This paper proposes a novel steganography technique for digital color image which achieves the purported targets. The professed methodology employs a complete random scheme for pixel selection and embedding of data. Of the three colour channels (Red, Green, Blue) in a given colour image, the least two significant bits of any one of the channels of the color image is used to channelize the embedding capacity of the remaining two channels. We have devised three approaches to achieve various levels of our desired targets. In the first approach, Red is the default guide but it results in localization of MSE in the remaining two channels, which makes it slightly vulnerable. In the second approach, user gets the liberty to select the guiding channel (Red, Green...

• Type: Journal
• Year: 2010
• Where: CORR
• Authors: R. Amirtharajan, Sandeep Kumar Behera, Motamarri Abhilash Swarup, Mohamed Ashfaaq K, John Bosco Balaguru Rayappan
• Keywords: Color Image, Complete Random Scheme, CORR 2010, Digital Color Image, Education