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Blind Watermarking Scheme for Gray Scale Images Using DCT


Affiliations
1 Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
2 Shrimad Rajchandra Institute of Management and Computer Application, India
     

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Digital watermarking scheme is used to protect copyrights of owners. We proposed blind watermarking scheme based on DCT (Discrete Cosine Transform) algorithm. The proposed method provides hiding a watermark in Gray Scale Image. Digital color image is transformed into Gray Scale Image then the DCT algorithm is used for watermarking process. Block based DCT algorithm used for embedding watermark. For embedding watermark, all bits of the watermark image are embedded in various DCT blocks. To extract watermark same process will be done in inverse manner. In such watermarking scheme, it requires original image to retrieve embedded image where in blind watermarking process it doesn't require cover image to retrieve embedded image.

Keywords

Digital Watermarking, Blind Watermarking, Discrete Cosine Transform (DCT).
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  • Blind Watermarking Scheme for Gray Scale Images Using DCT

Abstract Views: 315  |  PDF Views: 2

Authors

Nidhi Patel
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Pinal Suratwala
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Rupal Patel
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Bhakti Kaneriya
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Dhara Soliya
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Mansi Gandhi
Shrimad Rajchandra Institute of Management and Computer Application, Uka Tarsadia University, Bardoli, India
Vivek Fumakia
Shrimad Rajchandra Institute of Management and Computer Application, India

Abstract


Digital watermarking scheme is used to protect copyrights of owners. We proposed blind watermarking scheme based on DCT (Discrete Cosine Transform) algorithm. The proposed method provides hiding a watermark in Gray Scale Image. Digital color image is transformed into Gray Scale Image then the DCT algorithm is used for watermarking process. Block based DCT algorithm used for embedding watermark. For embedding watermark, all bits of the watermark image are embedded in various DCT blocks. To extract watermark same process will be done in inverse manner. In such watermarking scheme, it requires original image to retrieve embedded image where in blind watermarking process it doesn't require cover image to retrieve embedded image.

Keywords


Digital Watermarking, Blind Watermarking, Discrete Cosine Transform (DCT).

References