REVERSIBLE DATA HIDING BASED ON PIXEL-BASED PIXEL VALUE ORDERING PREDICTOR AND EMD
نویسندگان
چکیده
منابع مشابه
Reversible Data Hiding Based on Geometric Structure of Pixel Groups
Many reversible data hiding schemes have been developed in recent decades. Traditional schemes typically must deal with the problem of overflow and underflow, or transmission of hiding parameters. The new reversible data hiding scheme proposed in this paper is based on a combination of pixel groups’ geometric structure and secret sharing mechanism. Experimental results confirm that the proposed...
متن کاملData Hiding Method Based on Graph Coloring and Pixel Block‘s Correlation in Color Image
An optimized method for data hiding into a digital color image in spatial domainis provided. The graph coloring theory with different color numbers is applied. To enhance thesecurity of this method, block correlations method in an image is used. Experimental results showthat with the same PSNR, the capacity is improved by %8, and also security has increased in themethod compared with other meth...
متن کاملDual-Image Based Reversible Data Hiding Scheme Using Pixel Value Difference Expansion
In this paper, we propose a dual-image based reversible data hiding scheme. Here, we divide a secret message into sub-stream of size n bits, where n − 1 bits are embedded using Pixel Value Differencing (PVD) and 1 bit is embedded using Difference Expansion (DE). We consider two consecutive pixels from cover image, calculate the difference between them and then embed n − 1 bits secret message by...
متن کاملAn Information Hiding Scheme Based on Pixel-Value-Ordering and Prediction-Error Expansion with Reversibility
This paper proposes a data hiding scheme based on pixel-value-ordering and predication-error expansion. In a natural image, most neighboring pixels have similar pixel values, i.e. the difference between neighboring pixels is small. Based on the observation, we may predict a pixel’s value according its neighboring pixels. The proposed scheme divides an image into non-overlapping blocks each of w...
متن کاملHierarchical Context-based Pixel Ordering
We present a context-based scanning algorithm which reorders the input image using a hierarchical representation of the image. Our algorithm optimally orders (permutes) the leaves corresponding to the pixels, by minimizing the sum of distances between neighboring pixels. The reordering results in an improved autocorrelation between nearby pixels which leads to a smoother image. This allows us, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific Journal of Tra Vinh University
سال: 2019
ISSN: 1859-4816
DOI: 10.35382/18594816.1.1.2019.82