A secure true edge based 4 least significant bits steganography

Abstract

In this paper true edge based data hiding technique is proposed to take advantage of less sensitivity of human visual system to changes in complex regions of the image. This method utilizes edge detection and Steganography techniques. The Canny edge detection technique is used to identify true edge pixels and 4LSB Steganography technique is used to hide a secret message in the 4 least significant bits of edge pixels in the cover image. By hiding data in edges improve the quality of stego-image significantly. The results obtained show that the proposed technique hides large amount secret information in the cover image with better visual image quality than other techniques. The experimental results demonstrate the average hiding capacity of 4%, and the PSNR and MSE are 45dB and 1.60 respectively.