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首页> 外文期刊>Journal of Imaging Science and Technology >Watermarking Spectral Images with Three-Dimensional Wavelet Transform Subject to Various Illumination Conditions
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Watermarking Spectral Images with Three-Dimensional Wavelet Transform Subject to Various Illumination Conditions

机译：三维小波变换在不同光照条件下的水印光谱图像

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摘要

Digital imaging continues its expansion into various applications. Spectral images are becoming more popular as one field of digital imaging. At the same time, the economic and security aspects in the utilization of images are finding increased emphasis. In this study, the authors apply a watermarking method for spectral images, whereby embedding is based on the three-dimensional wavelet transform. The authors study the influence of illumination to the watermarked images. The authors also define how to estimate an unknown Hluminant. Experiments were performed on a dataset of 13 spectral images. These experiments indicate that the illumination in spectral images should be established before watermarking, owing to the properties of the illuminants. Using the proposed watermarking method, the embedded watermark is also robust towards lossy compression. Guidelines for the parameter selection for watermarking with the proposed approach are given.
机译：数字成像继续将其扩展到各种应用中。光谱图像作为数字成像的一个领域变得越来越流行。同时，在图像利用方面的经济和安全方面正日益受到重视。在这项研究中，作者将水印方法应用于光谱图像，从而基于三维小波变换进行嵌入。作者研究了照明对水印图像的影响。作者还定义了如何估计未知的Hluminant。在13个光谱图像的数据集上进行了实验。这些实验表明，由于光源的特性，应在加水印之前建立光谱图像中的照明。使用所提出的水印方法，嵌入的水印对于有损压缩也很鲁棒。给出了使用所提出的方法进行水印的参数选择的指南。

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