Electrical and Computer Engineering Department, Shahid Beheshti University G.C., Tehran, Iran.
Forensic Sci Int. 2013 Dec 10;233(1-3):193-200. doi: 10.1016/j.forsciint.2013.09.005. Epub 2013 Sep 12.
In this paper, a novel robust watermarking technique using Imperialistic Competition Algorithm (ICA) in the spatial domain is proposed to protect the intellectual property rights of color images. The proposed method tries to insert the watermark in the blocks which are selected by Modified ICA. In this method, ICA has been customized for watermarking. The color band for watermark insertion is selected based on color dynamic range in each block. Besides, in the procedure of selecting blocks for watermark insertion and extraction, ensuring higher fidelity and robustness and resilience to several possible image attacks have been considered. The experimental results showed that the proposed method performance created watermarked images with better PSNRs and more robustness versus several attacks such as additive noise and blurring in compare to related works.
本文提出了一种基于帝国竞争算法（ICA）的新的稳健水印技术，用于保护彩色图像的知识产权。该方法试图将水印嵌入到经修正的 ICA 选择的块中。在这种方法中，ICA 已针对水印进行了定制。根据每个块中的颜色动态范围选择用于插入水印的颜色带。此外，在选择用于水印插入和提取的块的过程中，考虑了更高的保真度和稳健性以及对几种可能的图像攻击的弹性。实验结果表明，与相关工作相比，该方法在创建具有更好的 PSNR 和更稳健的水印图像方面表现出色，并且对几种攻击（如加性噪声和模糊）具有更强的抵抗力。
