An Entropy Masking in Digital Images using FFT
نویسندگان
چکیده
The essence of transmitting digital information in digital watermarking system and the dissymmetric digital watermarking framework lived on media content communication is being discussed in this paper. The protection and integrity of information during transmission is also discussed in this paper. Fast Fourier Transform (FFT) is applied for watermarking embedding algorithm to keep the balance between watermarks' imperceptibility and its robustness.
منابع مشابه
Fusion of Panchromatic and Multispectral Images Using Non Subsampled Contourlet Transform and FFT Based Spectral Histogram (RESEARCH NOTE)
Image fusion is a method for obtaining a highly informative image by merging the relative information of an object obtained from two or more image sources of the same scene. The satellite cameras give a single band panchromatic (PAN) image with high spatial information and multispectral (MS) image with more spectral information. The problem exists today is either PAN or MS image is available fr...
متن کاملA Novel Image Encryption Model Based on Hybridization of Genetic Algorithm, Chaos Theory and Lattice Map
Encryption is an important issue in information security which is usually provided using a reversible mathematical model. Digital image as a most frequently used digital product needs special encryption algorithms. This paper presents a new encryption algorithm high security for digital gray images using genetic algorithm and Lattice Map function. At the first the initial value of Logistic Map ...
متن کاملReversible Watermarking based on Entropy Masking with Histogram Shifting
In this paper an improved method for reversible watermarking is proposed. This scheme is the combination of entropy masking and histogram. One first contribution is entropy masking which has three techniques. From three of them dwt is used for the watermarking. Entropy masking is also a human visual system’s characteristic, which rarely has been addressed in visual models. The second contributi...
متن کاملImproving the RX Anomaly Detection Algorithm for Hyperspectral Images using FFT
Anomaly Detection (AD) has recently become an important application of target detection in hyperspectral images. The Reed-Xialoi (RX) is the most widely used AD algorithm that suffers from “small sample size” problem. The best solution for this problem is to use Dimensionality Reduction (DR) techniques as a pre-processing step for RX detector. Using this method not only improves the detection p...
متن کاملImage Encryption by Using Combination of DNA Sequence and Lattice Map
In recent years, the advancement of digital technology has led to an increase in data transmission on the Internet. Security of images is one of the biggest concern of many researchers. Therefore, numerous algorithms have been presented for image encryption. An efficient encryption algorithm should have high security and low search time along with high complexity.DNA encryption is one of the fa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014