Journal of ICT Research and Applications
Vol. 14 No. 1 (2020)

A Novel Watermarking Method using Hadamard Matrix Quantization

Prajanto Wahyu Adi (Department of Informatics Engineering, Universitas Dian Nuswantoro Semarang, Jalan Imam Bonjol 207, 50131 Semarang)
Pramudi Arsiwi (Department of Industrial Engineering, Universitas Dian Nuswantoro Semarang, Jalan Imam Bonjol 207, 50131 Semarang)



Article Info

Publish Date
28 Jul 2020

Abstract

One of the most used watermarking algorithms is Singular Value Decomposition (SVD), which has a balanced level of imperceptibility and robustness. However, SVD uses a singular matrix for embedding and two orthogonal matrices for reconstruction, which is inefficient. In this paper, a Hadamard matrix is used to get a singular matrix for the reconstruction process. Moreover, SVD works with a floating-point value, which takes long processing time, while the Hadamard matrix works with an integer range, which is more efficient. Visual measurement showed that SVD and the new method had average NC values of 0.8321 and 0.8293, whereas the average SSIM values resulted in the same value (0.9925). In terms of processing time, the proposed method ran faster than SVD with an embedding and extraction time of 0.6308 and 0.2163 seconds against 0.8419 and 0.2935 seconds. The proposed method successfully reduced the running time while maintaining imperceptibility and robustness.

Copyrights © 2020






Journal Info

Abbrev

jictra

Publisher

Subject

Computer Science & IT

Description

Journal of ICT Research and Applications welcomes full research articles in the area of Information and Communication Technology from the following subject areas: Information Theory, Signal Processing, Electronics, Computer Network, Telecommunication, Wireless & Mobile Computing, Internet ...