Dissertation•
Analysis and Experiments on LSB-Based and ATD Steganographic Methods for Gray Scale and Color Images
01 Jan 2017-
About: The article was published on 2017-01-01 and is currently open access. It has received None citations till now. The article focuses on the topics: Color image & Steganography.
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TL;DR: This paper provides a state-of-the-art review and analysis of the different existing methods of steganography along with some common standards and guidelines drawn from the literature and some recommendations and advocates for the object-oriented embedding mechanism.
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TL;DR: A binary tree structure is exploited to solve the problem of communicating pairs of peak points and distribution of pixel differences is used to achieve large hiding capacity while keeping the distortion low.
Abstract: In this letter, we present a reversible data hiding scheme based on histogram modification. We exploit a binary tree structure to solve the problem of communicating pairs of peak points. Distribution of pixel differences is used to achieve large hiding capacity while keeping the distortion low. We also adopt a histogram shifting technique to prevent overflow and underflow. Performance comparisons with other existing schemes are provided to demonstrate the superiority of the proposed scheme.
550 citations
TL;DR: This paper shall use the dynamic programming strategy to get the optimal solution and the experimental results will show that this method consumes less computation time and also gets the optimal Solution.
369 citations
01 Mar 2002
TL;DR: A novel steganographic method based on joint photographic expert-group (JPEG) that has a larger message capacity than Jpeg-Jsteg, and the quality of the stego-images of the proposed method is acceptable.
Abstract: In this paper, a novel steganographic method based on joint photographic expert-group (JPEG) is proposed. The proposed method modifies the quantization table first. Next, the secret message is hidden in the cover-image with its middle-frequency of the quantized DCT coefficients modified. Finally, a JPEG stego-image is generated. JPEG is a standard image and popularly used in Internet. The stego-image will not be suspected if we could apply a JPEG image to data hiding. We compare our method with a JPEG hiding-tool Jpeg-Jsteg. From the experimental results, we obtain that the proposed method has a larger message capacity than Jpeg-Jsteg, and the quality of the stego-images of the proposed method is acceptable. Besides, our method has the same security level as Jpeg-Jsteg.
366 citations
TL;DR: Experimental results show that the performance of the proposed reversible data hiding scheme based on side match vector quantization (SMVQ) for digitally compressed images is better than those of other information hiding schemes for VQ- based and SMVQ-based compressed images.
Abstract: Many researchers have studied reversible data hiding techniques in recent years and most have proposed reversible data hiding schemes that guarantee only that the original cover image can be reconstructed completely. Once the secret data are embedded in the compression domain and the receiver wants to store the cover image in a compression mode to save storage space, the receiver must extract the secret data, reconstruct the cover image, and compress the cover image again to generate compression codes. In this paper, we present a reversible data hiding scheme based on side match vector quantization (SMVQ) for digitally compressed images. With this scheme, the receiver only performs two steps to achieve the same goal: extract the secret data and reconstruct the original SMVQ compression codes. In terms of the size of the secret data, the visual quality, and the compression rate, experimental results show that the performance of our proposed scheme is better than those of other information hiding schemes for VQ-based and SMVQ-based compressed images. The experimental results further confirm the effectiveness and reversibility of the proposed scheme
227 citations