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Data hiding is a technology that communicates the secret data by the multimedia carrier, such like image, audio, and video files. A good data hiding scheme can hide huge secret data in the multimedia carrier without degrading the quality of the carrier. In this paper, a high hiding capacity reversible data hiding scheme with low distortion using double-embedding strategies is proposed. The proposed...
In this paper, an improved dual-wrap watermarking scheme was proposed that is based on HLC watermarking scheme. HLC watermarking scheme has many advantages, however, it has the ambiguity problem. This paper solves the problem of HLC watermarking scheme and provides similar robustness. The experimental results show that the proposed scheme is unambiguity and robustness.
In this paper, we propose a new more efficient steganography technique that can be applied in Internet environment. The new efficient technique can hide from 1 to 8 bits secret data per pixel, and has no distortion if the number of colors does not exceed 128. The proposed scheme first divides the secret data into several parts based on the number of colors in the cover image, and then embed secret...
This paper proposes a new method for data hiding in binary images using optimized bit position to replace a secret bit. This method manipulates blocks, which are subdivided. The parity bit for a specified block decides whether to change or not, to embed a secret bit. By finding the best position to insert a secret bit for each divided block, the image quality of the resulting stego-image can be improved,...
This paper proposes a high capacity data hiding method using modulus function of pixel-value differencing (PVD) and least significant bit (LSB) replacement method. Many novel data hiding methods based on LSB and PVD methods were presented to enlarge hiding capacity and provide an imperceptible quality. A small difference value for two consecutive pixels is belonged to a smooth area and a large difference...
X. Zhang and S. Wang proposed an Exploiting Modification Direction (EMD) method that fully exploits modification directions. Modifications in different directions were used to represent different secret data. In 5-ary notational system, only one secret digit is embedded for each two pixel. This paper proposes an improved method for EMD which can hide more secret data while maintaining a high PSNR...
In this paper, a simple and robust watermarking scheme is presented by using random mapping function. The idea of the proposed algorithm is watermark embedding which can be more robust than the traditional LSB technique. Using the proposed algorithm, it makes the secure random coordinate of cover image to increase the robustness of the watermarked image. Experimental results show that the quality...
Wu and Tsaipsilas pixel-value differencing method and Chang and Tsengpsilas side-match method are based on the theory that the number of bits which can be embedded is determined by the degree of the pixelpsilas smoothness, or its proximity to the edge of the image. If pixels are located in the edge area, they may tolerate larger changes than those in smooth areas. However, both methods are subject...
This paper proposes a new data hiding method for two-color images by two stage referencing. The cover image is partitioned into n x n non-overlapping sub-blocks, and calculated different values by two stages for all pixel to find the suitable replacement pixel. For a one stage, neighboring pixels with (n+2) times (n+2) are used to obtain difference value which is different with the current pixel value...
This paper proposes a new data hiding method for binary images using pixel-value weighting. The binary cover image is partitioned into non-overlapping sub-blocks and finds the most suitable position to embed a secret bit for each sub-block. The proposed method calculates a weighted value for a sub-block to pivot a pixel to be changed. This improves the image quality of the stego-image. The experimental...
A novel data hiding method based on the least significant bit (LSB) substitution and the multi-pixel differencing (MPD) method is presented on the proposed method to improve the capacity of hidden secret data and to provide an imperceptible visual quality. First, a sum of different values for a four-pixel sub-block is calculated. The low value of the sum can be located on a smooth block and the high...
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