Vol. 2 Issue 2
Year: 2015
Issue:Apr-Jun
Title:Image Authentication Using Semifragile Watermarking And Vector Quantization
Author Name:Archana Tiwari and Manisha Sharma
Synopsis:
In this paper, a new technique for image authentication is presented which uses semifragile watermarking scheme using vector quantization approach. The proposed scheme suggests semifragile watermarking scheme for blind image authentication using VQ (Vector quantization) by applying novel index based method combined with Discrete cosine transform. Present method is tested using, different combinations of code books for watermark insertion and extraction procedure . The proposed method results in an improved PSNR with an average value of 42 dB compared to average value 30 dB suggested by Lu et al.
Year: 2015
Issue:Apr-Jun
Title:Image Authentication Using Semifragile Watermarking And Vector Quantization
Author Name:Archana Tiwari and Manisha Sharma
Synopsis:
In this paper, a new technique for image authentication is presented which uses semifragile watermarking scheme using vector quantization approach. The proposed scheme suggests semifragile watermarking scheme for blind image authentication using VQ (Vector quantization) by applying novel index based method combined with Discrete cosine transform. Present method is tested using, different combinations of code books for watermark insertion and extraction procedure . The proposed method results in an improved PSNR with an average value of 42 dB compared to average value 30 dB suggested by Lu et al.
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