A Novel Approach of Watermarking for Multiple Images with DWT-DCT

M. Manjula; R. Poomurugan

doi:https://doi.org/10.51976/ijari.721909

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A Novel Approach of Watermarking for Multiple Images with DWT-DCT

M. Manjula, R. Poomurugan

Vol 7 , Issue 2 , April - June 2019 | Pages: 61-66 | Research Paper

https://doi.org/10.51976/ijari.721909

Received: January 01, 2019 | Revised: March 20, 2019 | Accepted: April 28, 2019 | Published Online: June 15, 2019

Author Details ( * ) denotes Corresponding author

1. * M. Manjula, Department of Electronics and Communication Engineering, Gnanamani College of Technology, Tamil Nadu, India (manjulotus97@gmail.com)

2. R. Poomurugan, Department of Electronics and Communication Engineering, Gnanamani College of Technology, Tamil Nadu, India

A novel approach is discussed, to embed the multiple images (more than one image) with single cover image. More than one image coefficients are can be effectively embedded into cover image coefficients. The 3 images (cover image, 2 watermark images) are transformed into wavelet coefficients. One of the coefficients of watermark images LLw1 & LLw2 & cover image LLc & HHc are follows DCT & embedding process respectively. The resultant cover image hiding multiple watermark images respectively. The quantitative & qualitative analysis is discussed with Normalized Correlation (NC), Mean square error (MSE) & Peak Signal to noise ratio (PSNR).

Keywords

Discrete Wavelet; Digital Water Marking; Peak Signal to Noise Ratio.

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