Authors: Lakshmi Priya S; K. Namitha; Natha Manoj Kumar; Neela Niranjani Vengateshwaran
Addresses: Department of CSE, SSN College of Engineering, Chennai, India ' Intellect Design Arena Limited, Plot No. 3/G3, SIPCOT IT Park, Siruseri, Chennai, 600130, Tamil Nadu, India ' Facebook, Inc., 1 Hacker Way, Menlo Park, CA 94025, USA ' SAS Institute Inc., 100 SAS Campus Drive, Cary, NC 27513-2414, USA
Abstract: Steganography is a branch of information hiding which allows people to communicate in a secure way. To increase confidentiality in sending information, our paper combines two techniques: 1) the LSB replacement technique for hiding text messages in an image; 2) an iterative image fusion algorithm. The fusion algorithm aims at choosing an optimal carrier image to be fused with an input image containing the hidden text. The results show an increase in the PSNR value for the final image. Also, a comparative analysis is done in three ways: 1) PSNR values before and after fusion; 2) effects of using an optimum carrier versus a random carrier image; 3) effects of varying lengths of input text messages and the corresponding changes in PSNR values. From the three cases, we are able to prove that the PSNR value of the final image is increased after fusion with an optimal carrier image.
Keywords: steganography; adaptive image fusion; LSB replacement.
International Journal of Computer Aided Engineering and Technology, 2019 Vol.11 No.2, pp.184 - 195
Received: 09 Jan 2017
Accepted: 06 Jul 2017
Published online: 26 Dec 2018 *