In this paper, we present a new block diagram for blind watermarking of CFA (color filter array) images based on the quaternionic wavelet transform (QWT) in order to ensure the secure transfer of digital photography images. Watermarking using the substitute method in the frequency domain has been implemented. The proposed watermarking algorithm has been evaluated by the calculations of the peak signal to noise ratio (PSNR) between original image and watermarked image, and the correlation coefficient (CC) between the original watermark and the watermark extracted after watermarking. The application of this algorithm on CFA images allowed us to get good results and verify its effectiveness against certain attacks.

blind watermarking, CFA images, QWT, PSNR, CC.

Received: March 12, 2021; Accepted: April 3, 2021; Published: June 15, 2021

How to cite this article: Abena Ndongo Hervé, Eloundou Ebassa Bertrand Ledoux, Bitjoka Laurent and Tieudjo Daniel, Blind Watermarking of CFA Images Based on Quaternions, Far East Journal of Electronics and Communications 24(1) (2021), 67-80. DOI: 10.17654/EC024010067

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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