Digital image watermarking spread-space spread-spectrum technique based on Double Random Phase Encoding
نویسندگان
چکیده
منابع مشابه
Adaptive-Rate Image Watermarking based on Spread Spectrum Communication Technique
As the Internet becomes more and more populous, people concern more about the copyright protection issue for digital data such as images and audio. Digital watermarking technique can hide data in images or audio to indicate the data owner or recipient. Therefore, it can protect the copyright. There were a lot of papers discussing how to embed watermark into images in recent years. However, few ...
متن کاملImage Watermarking Using Spread Spectrum Technique
Abstract In this paper, we propose to embed the watermark information in the log-2-spatio domain by means of spread spectrum technique. In log-2-spatio domain, the variance of the information is reduced significantly. This improves the efficiency and robustness of spread spectrum technique. Low intensity and mid-band regions are selected to embed the information in order to guarantee an invisib...
متن کاملDigital Image Watermarking by Spread Spectrum
One digital watermarking method, based on the spread spectrum technique, is described in this paper. This method uses the frequency hopping spread spectrum in order to determine positions for watermark embedding in an original image, while the direct spread spectrum technique is used to provide robustness to the watermark signal. To embed the watermark signal, the selected bits are used to carr...
متن کاملDigital Watermarking Of Satellite Images Using Secured Spread Spectrum Technique
Digital watermarking has been proposed to increase the digital data security, confidentiality and integrity. Satellite image watermarking is a special category of image watermarking in the sense that the images have special requirements. Particularly, watermarked satellite images should not differ perceptually from the original counterparts, because the purpose of taking the image must not be v...
متن کاملRotation, scale and translation invariant spread spectrum digital image watermarking
A digital watermark is an invisible mark embedded in a digital image which may be used for a number of different purposes including image captioning and copyright protection. This paper describes how a combination of spread spectrum encoding of the embedded message and transform-based invariants can be used for digital image watermarking. In particular, it is described how a Fourier-Mellin-base...
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: Optics Communications
سال: 2013
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2013.03.005