Results 31 to 40 of about 88 (69)
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Local feature-based mutual complexity for pixel-value-ordering reversible data hiding
Signal Processing, 2023In reversible data hiding, pixel-value-ordering (PVO) has become a widely used framework benefiting from its high-fidelity under low-capacity requirements. As an essential element in PVO-based methods, complexity could effectively avoid embedded images from unnecessary embedding distortions.
Zhibin Pan, Xinyi Gao, Guojun Fan
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Reversible data hiding using invariant pixel-value-ordering and prediction-error expansion
Signal Processing: Image Communication, 2014Recently, Li et al. proposed a reversible data hiding (RDH) method based on pixel-value-ordering (PVO) and prediction-error expansion. In their method, the maximum and the minimum of a pixel block are predicted and modified to embed data, and the reversibility is guaranteed by keeping PVO of each block invariant after embedding.
Bo Ou, Rongrong Ni
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Image deconvolution by local order preservation of pixels values
2016 24th European Signal Processing Conference (EUSIPCO), 2016Positron emission tomography is more and more used in radiation oncology, since it conveys useful functional information about cancerous lesions. Its rather low spatial resolution, however, prevents accurate tumor delineation and heterogeneity assessment.
Stéphanie Guérit +2 more
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Dynamic improved pixel value ordering reversible data hiding
Information Sciences, 2019Abstract The existing reversible data hiding (RDH) methods based on improved pixel value ordering (IPVO) use only a small portion of the pixels (e.g., at most six pixels) in a block for embedding data. Our proposed method is a dynamic IPVO RDH, which can flexibly modify the number of pixels in a block by classifying the local complexity into multiple
Shaowei Weng +3 more
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A generalized pixel value ordering data hiding with adaptive embedding capability
The Journal of Supercomputing, 2019In this paper, we proposed an improvisation to Li et al.’s pixel value ordering (PVO) method and called it as generalized PVO (GePVO), which provides a suitable expansion strategy using the image redundancy more abundantly. GePVO makes use of a reference pixel and calculates prediction errors using both sides of the block in different modes (one-way ...
Chin-Feng Lee +4 more
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A Pixel Value Ordering Predictor for High-Capacity Reversible Data Hiding
2016 International Conference on Networking and Network Applications (NaNA), 2016Reversible data hiding (RDH), also known as lossless data embedding, is increasingly attracting more attentions of academic and industry researchers intrigued by their affordances and reach. Recently, various pixel value ordering (PVO) predictors for RDH methods with remarkable embedding performance have been proposed. These PVO-based schemes have good
Chin-Feng Lee, Yu-Ju Tseng
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Global pixel-value-ordering framework with dynamic sequence partition for reversible data hiding
Knowledge-Based SystemsZhibin Pan, Guojun Fan
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High-fidelity reversible data hiding by Quadtree-based pixel value ordering
Multimedia Tools and Applications, 2018Recently, the pixel value ordering (PVO) method has received a great deal of attention in the field of high-fidelity reversible data hiding. To improve the embedding performance of the PVO-based method, a quadtree-based pixel value ordering (QPVO) method based on dynamic quadtree partition is proposed in this paper. Instead of using equal-sized blocks,
Fuqiang Di +3 more
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Overlapping pixel value ordering predictor for high-capacity reversible data hiding
Journal of Real-Time Image Processing, 2019In recent years, many reversible information hiding methods have been proposed. Among them, the pixel value ordering (PVO) method can be used to create high-fidelity camouflage images under good embedding capacity. The original PVO method adopted the block-by-block manner, and each block could embed only 2 bits. In this study, we propose an overlapping
Chin-Feng Lee +3 more
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An Improved Reversible Watermarking Based on Pixel Value Ordering and Prediction Error Expansion
2020In this paper, a new pixel value ordering (PVO) and prediction error Expansion (PEE) based reversible watermarking method is proposed. PVO based method firstly introduced by Li et al.’s has been concerned and expanded because it can achieve high embedding capacity without losing the implication of the cover.
Le Quang Hoa +3 more
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