A new image watermarking algorithm by using contourlet transform accompanied by PSO algorithm

Document Type : Research Paper


1 Department of Electrical Engineering, Nour Branch, Islamic Azad University, Nour, Iran

2 Department of Mathematics, Iran University of Science and Technology, Tehran 1684613114, Iran

3 Department of Mathematical Sciences, University of South Africa, UNISA0003, South Africa


One of the ways to enhance the security and concealment of data used today is image watermarking. In image watermarking operation, we try to hide image inside another image without letting others know about the hidden image. In this paper, Contourlet Transform and SVD Transform are used to embedded watermark in the host image. The PSO Optimization Algorithm is also used in the watermark extraction step to find the best scale factor. The results of the proposed algorithm in this article show an improvement over the comparative methods.


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Volume 12, Special Issue
December 2021
Pages 563-570
  • Receive Date: 12 January 2021
  • Revise Date: 20 May 2021
  • Accept Date: 14 June 2021