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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 10    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 10, October 2011 Edition
Performance Comparison of Semifragile Watermarking Methods for Image Au-thentication
Full Text(PDF, 3000)  PP.  
Archana Tiwari , Dr. Manisha Sharma
semi-fragile watermarking, PSNR, Robustness, Tamper detection
Data authentication is one of the primary requisites in present day communication systems. In image processing, data authentication is implemented by using watermarking techniques. The specific interest in semifragile watermarking algorithms arises from the multitude of practical and commercial applications, where content needs to be strictly protected, but the exact representation during exchange and storage need not be guaranteed. The alterations on the documents can occur unintentionally or can be implanted intentionally. Semifragile watermarks are more robust and less sensitive to classical user modifications such as JPEG compression, content-preserving operations and content altering manipulations while sensitive to content integrity verification. In present paper the performance of seven semifragile watermarking methods are compared in terms of their PSNR, robustness and temper sensitivity properties.
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