Title: Increased PSNR with improved DWT digital watermarking technique

Authors: Ifra I. Khan; Khaleel Ahmad; M.A. Rizvi; Khairol Amali Bin Ahmad

Addresses: National Institute of Technical Teachers' Training and Research, Bhopal, Madhya Pradesh 462002, India ' Department of CS and IT, Maulana Azad National Urdu University, Hyderabad, Telangana 500032, India ' National Institute of Technical Teachers' Training and Research, Bhopal, Madhya Pradesh 462002, India ' Faculty of Engineering, National Defence University of Malaysia, 57000 Kuala Lumpur, Malaysia

Abstract: Today, the world is moving towards a digital era in every walk of life. Every business, government and private sectors, and research organisation use the digital image, as a transfer mode for critical data. The images over the internet are not secure therefore, image security is needed. In this work, a new technique of image security is proposed using digital watermarking which is more efficient and robust than the discrete wavelet transform (DWT). The whole mechanism is greatly reliable on the human visual system, as the watermark is not visible to the human eye. This increases the security of the hidden image or messages. The technique is tested against the PSNR of several images. The average PSNR calculated of all the tested images was compared to other techniques and found that the new technique is better than the existing techniques. This technique can be used for security of multimedia data.

Keywords: image watermarking; DWT watermarking; digital watermarking; peak signal to noise ratio; PSNR; human visual system; HVS; copyright protection.

DOI: 10.1504/IJICA.2019.103390

International Journal of Innovative Computing and Applications, 2019 Vol.10 No.3/4, pp.185 - 193

Received: 15 Jan 2019
Accepted: 01 Apr 2019
Published online: 05 Nov 2019 *

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