期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2018
卷号：18
期号：3
页码：155-160
出版社：International Journal of Computer Science and Network Security
摘要：This paper introduces an image steganography method based on modified least significant bit (LSB) substitution technique and data mapping. Initially, the secret image is pre-processed using a new data mapping scheme to reduce the number of 1’s in secret data. The secret data is then embedded into the host image using a modified LSB substitution technique. In this technique, each pixel value of host image is changed if value of secret bit is 1 otherwise the LSB of each pixel value will remain unchanged which is different from conventional LSB technique. This improves the visual quality of the stego image by changing the less number of bits in image pixel. Experimental results indicate that the proposed method provides high quality stego image. Moreover, it outperforms state-of-the-art methods in terms of peak signal-to-noise ratio (PSNR), mean square error (MSE), and structural similarity (SSIM).
关键词：Image steganography; Least Significant Bit; Data mapping; Peak signal-to-noise ratio; structural similarity.
