Results 41 to 50 of about 88 (69)
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A DWT Ordering Scheme for Hiding Data in Images Using Pixel Value Difference
2012 Eighth International Conference on Computational Intelligence and Security, 2012A scheme is proposed to hide data in images based on a prioritised ordering of the content of the host image. The embedding process uses the watermark strength to determine the ordering of the 16 regions resulting from the second level wavelet transform DWT decomposed content of the host image.
Awad Kh. Al-Asmari +3 more
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International Journal of Innovative Computing, Information and Control, 2018
The proposed method uses second-order derivatives to derive more information from the gray values of the pixels in a scanning electron microscope image. It represents this information as a histogram of second-order values, which expresses the variation in pixel values caused by image details and noise. The method uses the histogram as the basis for the
Chan, Wai Ti +2 more
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The proposed method uses second-order derivatives to derive more information from the gray values of the pixels in a scanning electron microscope image. It represents this information as a histogram of second-order values, which expresses the variation in pixel values caused by image details and noise. The method uses the histogram as the basis for the
Chan, Wai Ti +2 more
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Improved Pairwise Pixel-Value-Ordering for High-Fidelity Reversible Data Hiding
2018 25th IEEE International Conference on Image Processing (ICIP), 2018Pixel-value-ordering (PVO) appears as an efficient technique for high-fidelity reversible data hiding. This paper proposes a reversible data hiding scheme based on the pairwise PVO framework with improved difference equations. Both the pixel pair selection and the embedding algorithms are also streamlined.
Ioan-Catalin Dragoi +2 more
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2016 International Conference on Robotics, Automation and Sciences (ICORAS), 2016
The proposed method utilizes histograms of second-order derivatives of the values of the pixels in an SEM image. The histograms of second-order values can express the variation in pixel values due to the effect of noise. The histograms are used as the basis for a technique to target pixels for filtering.
W. T. Chan, K. S. Sim
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The proposed method utilizes histograms of second-order derivatives of the values of the pixels in an SEM image. The histograms of second-order values can express the variation in pixel values due to the effect of noise. The histograms are used as the basis for a technique to target pixels for filtering.
W. T. Chan, K. S. Sim
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A Survey of Reversible Data Hiding Schemes Based on Pixel Value Ordering
2016 Nicograph International (NicoInt), 2016Recently, a novel reversible data hiding method based on pixel value ordering, also called PVO, has been widespread concerned by the researchers in the field of data hiding, because the incorporation of PVO-based reversible data hiding reduces pixels modification, and thus it can contribute in the high fidelity of image quality.
Chin-Feng Lee +3 more
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Context pixel-based reversible data hiding scheme using pixel value ordering
The Visual Computer, 2023Sudipta Meikap +2 more
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A Data Hiding Method based on Multi-predictor and Pixel Value Ordering
2016Pixel Value Ordering (PVO) is a commonly-used method for reversible data hiding. PVO divides a cover image into non-overlapping blocks and the minimum and maximum values in a block are used to embed the secret data. The visual quality and embedding capacity of the PVO method is closely related to the size of the blocks.
Yung-Chen Chou +2 more
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Reference pixel-based reversible data hiding scheme using multi-level pixel value ordering
Multimedia Tools and Applications, 2023Sudipta Meikap, Biswapati Jana
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High-Capacity Reversible Data Hiding Using Modified Pixel Value Ordering Approach
Journal of Circuits, Systems and Computers, 2018The proposed reversible data hiding technique is the extension of Peng et al.’s technique [F. Peng, X. Li and B. Yang, Improved PVO-based reversible data hiding, Digit. Signal Process. 25 (2014) 255–265]. In this technique, a cover image is segmented into nonoverlapping blocks of equal size. Each block is sorted in ascending order and then differences
Neeraj Kumar Jain, Singara Singh Kasana
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An Adaptive Pixel Value Ordering Based Reversible Data Hiding Scheme for Images
SSRN Electronic Journal, 2022G. Melendez-Melendez +2 more
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