ECG Steganography Using Contourlet Transform For Transmission of Secured Patient Identity.

A new steganographic method using Contourlet Transform

Abstract: The technique, digital steganography is a secret data hiding scheme which involves hiding data in multimedia files. Steganographic methods embed secret data in the cover media with minimum visual and statistical distortion. This paper introduces a new steganographic method in transform domain based on contourlet PDFB (pyramidal directional filter bank) based transform. Contourlet is a multiscale and multidirectional transform domain, which provides the both spatial and frequency domain information. This method also uses the wavelet based compression technique like that of JPEG2000 on the secret data for transferring more information with fewer data. The approximation sub-band is embedded in the contourlet coefficients of the cover image. Approximation subband is multiplied by a constant factor k, which is determined experimentally. Modified values of approximation sub-band are embedded in the contourlet subband of the cover image by replacing them directly. Experimental results give that the proposed method has a good imperceptibility and to show this, the method uses four different visual quality metrics.

Implementation of Steganography in Image Media Using Algorithm LSB (Least Significant Bit)

Abstract: The development of Information Technology is very rapid at this time, triggering developments in other fields, one of them in the field of education. Currently, Information Technology is not only viewed as a field of education, but more than that Information Technology began to be developed in order to assist the development of the field of education itself. This is because the development of Information Technology in support of information exchange progress is increasingly dominant in today's society. Information Technology is expected to not only support the development of education alone, but more than that Information Technology is expected to provide solutions on existing educational and information problems. Application of steganography in message insertion will be more valuable that can be used as a positive value tool. In this research will be made system of steganography with LSB (Least Significant Bit) method. With the aim that all the information (message) inserted into the media images, audio and video could not be opened easily by people who have no interest.