Abstract
The research constitutes a distinctive technique of steganography of image. The procedure used for the study is Fractional Random Wavelet Transform (FRWT). The contrast between wavelet transform and the aforementioned FRWT is that it comprises of all the benefits and features of the wavelet transform but with additional highlights like randomness and partial fractional value put up into it. As a consequence of the fractional value and the randomness, the algorithm will give power and a rise in the surveillance layers for steganography. The stegano image will be acquired after administrating the algorithm which contains not only the coated image but also the concealed image. Despite the overlapping of two images, any diminution in the grade of the image is not perceived. Through this steganographic process, we endeavor for expansion in surveillance and magnitude as well. After running the algorithm, various variables like Mean Square Error (MSE) and Peak Signal to Noise ratio (PSNR) are deliberated. Through the intended algorithm, a rise in the power and imperceptibility is perceived and it can also support diverse modification such as scaling, translation and rotation with algorithms which previously prevailed. The irrefutable outcome demonstrated that the algorithm which is being suggested is indeed efficacious.
Highlights
The steganography of image is fundamentally nothing unusual from image encryption
Image steganography will be successful only if we find a suitable method to embed the secret image and create the stegano image
In the algorithm used here, the confidential image has been concealed in the LL sub-level of Fractional Random Wavelet Transform (FRWT) and it has been proved that the other sub-bands do not give good results as they the magnitude of their coefficients is less
Summary
The steganography of image is fundamentally nothing unusual from image encryption. A confidential image is concealed in such a manner that nobody except the person who is transmitter and the person who is the recipient of the image will identify that there is concealed data [15]. We work on a modern procedure of steganography which is related to Fractional Random Wavelet Transform (FRWT). It belongs to an extended relation of the wavelet transform [7]. To strengthen them and make them more robust for attacks, they are concealed within the frequency regions of the coated image [18] This assembles much further suitable for exchange of confidential information. The confidential image is concealed in the LL sub-band parameters of FRWT of the coated image. Succeeding this inverse transform (IFRWT) is applied and the stegano image is obtained by the recipient.
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More From: International Journal of Engineering and Advanced Technology
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