Digital Watermarking Algorithm for Tampering Localization
نویسندگان
چکیده
منابع مشابه
A Novel Watermarking Technique for Tampering Detection in Digital Images
A novel fragile watermarking technique is proposed for hiding logo information into an image by tuning block pixels based on a bitmap parity checking approach. A secure key and a random number generator are used to hide the logo information in a secret, undetectable, and unambiguous way. The characteristics of the mean gray value and the bitmap in a block are exploited for performing the embedd...
متن کاملA Zero-Watermarking algorithm on multiple occurrences of letters for text tampering detection
Electronic publishing has gained importance with the widespread use of Internet. It involves transmission of digital data in bulk from one place to another. It brings various threats to the data in form of illegal copying, redistribution of copyright contents and forgery. Watermarking provides authentication and copyright protection to the multimedia contents over the Internet. This paper prese...
متن کاملDigital Watermarking Methods for Authentication, Tamper Localization and Lossless Recovery
This thesis addresses authentication watermarking and compression of digital images under zero-distortion and maximum-per-sample-distortion constraints. In this context, a hierarchical authentication watermark is proposed for securely verifying the source and integrity of digital images and for determining altered image regions when the integrity verification fails. The proposed approach elimin...
متن کاملDetection of Tampering in Image Using Watermarking
In the last few years there is a tremendous development in the area of high quality digital camera technology. So our life is full of the use of these digital images. However now a days there are lot of software (for example Photoshop, Photoscape, Photoplus and Picasa etc.) that can be used to modify these digital image. Therefore we cannot use these images as a proof or evidence. Therefore det...
متن کاملDigital Video Watermarking with a Genetic Algorithm
Due to the explosion of data exchange on the Internet and the extensive use of digital media, it has been of intense interest to digital data owners in multimedia security and multimedia copyright protection. In this paper, a comprehensive approach for protecting and managing video copyrights with watermarking techniques is introduced. We propose a novel digital video watermarking scheme based ...
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: DEStech Transactions on Engineering and Technology Research
سال: 2017
ISSN: 2475-885X
DOI: 10.12783/dtetr/mcemic2016/9509