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An investigation of digital image watermarking technique based on RDWT.

机译：基于RDWT的数字图像水印技术研究。

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摘要

The rapid growth of the Internet and digital multimedia makes communication easier and more extensive than before. People can make and share products quickly and electronically. This presents a strong demand for the protection of copyright and intellectual property for audio, video, image, and document. Image watermarking is a technique that plays a very important role in protecting the copyright of image data.; In this research, a digital image watermarking technique based on the redundant discrete wavelet transform (RDWT) method in the transform domain is investigated. The performance and robustness of this technique is tested through common image processing operations, such as filtering, requantization, halftoning, and common still image compression techniques such as JPEG, etc. Simulation results show that the watermark added by this technique can survive most of the distortions coming from general image processing operations used in this study. Comparisons between this technique and other techniques based on the transform domain methods such as discrete cosine transform (DCT) and discrete wavelet transform (DWT) are also provided.
机译：互联网和数字多媒体的迅速发展使通信比以往更容易和更广泛。人们可以通过电子方式快速制作和共享产品。这就强烈要求保护音频，视频，图像和文档的版权和知识产权。图像水印技术在保护图像数据的版权方面起着非常重要的作用。在这项研究中，研究了一种基于冗余离散小波变换（RDWT）方法的数字图像水印技术。该技术的性能和鲁棒性通过常见的图像处理操作（例如过滤，重新量化，半色调和常见的静止图像压缩技术，例如JPEG等）进行了测试。仿真结果表明，该技术添加的水印可以在大多数情况下幸免于难。本研究中使用的一般图像处理操作产生的失真。还提供了该技术与其他基于变换域方法（例如离散余弦变换（DCT）和离散小波变换（DWT））的技术之间的比较。

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