A NEW METHOD FOR IMAGE STEGANOGRAPHY AND ITS COMPARISON WITH LSB TECHNIQUE

Ashwin Deshpande, Suyash Dhondkar, Shreyas Godbole, Gaurav Jadhav

Abstract: In this paper we have proposed a new method for hiding a 24-bit color image into another 24-bit color image. The new approach introduced here uses the concepts of average value and floating point precision to replace the pixel rather than bit by bit replacement. It exploits the limitations of the human eye to spot minute variations and also provides enough complexity to avoid decryption by brute force. We have also analyzed the popular LSB technique and compared it with our technique on the grounds of ease of decryption and Peak signal-to-noise Ratio (PSNR). Eventually by means of above parameters we have concluded that the proposed method provides much better security than the LSB method with a comparable PSNR.

Keywords: Steganography; Least Significant Bit; Weighted Mean; Information Security; PSNR

DOI: https://doi.org/10.15623/ijret.2017.0602013