High Embedding Capacity Data Hiding Technique Based on EMSD and LSB Substitution Algorithms

Serdar Solak

doi:10.1109/access.2020.3023197

Abstract

Data hiding called steganography is a security technique to protect secret data throughout the transmission from malicious attackers. The purposes of steganography are to obtain good stego-image quality, high embedding-capacity, low computational complexity, visual imperceptibility, undetectability, and more security. In this paper, we offer a new hybrid image steganography technique based on least significant bit (LSB) substitution and enhanced modified signed digit (EMSD) algorithms. The proposed algorithm utilizes n adjacent cover image pixels to hide the secret data with EMSD algorithm, and least significant k-bit for LSB substitution algorithm. Hence, it has more embedding capacity than the EMSD algorithm and exploiting modification direction (EMD) based algorithms. We obtain that the stego-image quality is better than 43 dB when the payload is 2.404 bpp. The results of experiment represent that this algorithm ensures high embedding-capacity while preserving acceptable visual stego image quality that can be undetectable by human eyes. Also, the hybrid of the EMSD and LSB substitution algorithms is to difficult for malicious people to consolidate data by scrambling secret data bits.

Highlights

As a result of the rapid development of information and communication technologies in recent years, people have started to store large numbers of digital data via obtained using the camera, self-phone, computer
We present a high embedding capacity data hiding technique based on enhanced modified signed digit (EMSD) and least significant bit (LSB) substitution algorithms
The proposed algorithm is tested on a series of standard grayscale cover images to evaluate by the data hiding measurement metrics such as embedding capacity (EC), payload (P), peak signal to noise ratio (PSNR), and structural similarity index measure (SSIM)

Summary

INTRODUCTION

As a result of the rapid development of information and communication technologies in recent years, people have started to store large numbers of digital data via obtained using the camera, self-phone, computer. S. Solak: High Embedding Capacity Data Hiding Technique Based on EMSD and LSB Substitution Algorithms steganography. A well-known data hiding technique is LSB substitution, in which uses the k-least significant bits of the cover image pixel values that are used in data embedding. We present a high embedding capacity data hiding technique based on enhanced modified signed digit (EMSD) and LSB substitution algorithms. The purpose of this algorithm is to increase EMSD algorithms embedding capacity while the stego image is to keep the visual quality acceptable.

RELATED WORK

EMD ALGORITHM

SMSD ALGORITHM

EMSD ALGORITHM

EXPERIMENTAL RESULTS AND COMPARISONS

CONCLUSION