一种使用离散小波变换（DWT）和哈希函数的用于磁共振成像（MRI）医学图像的新型混合水印算法。

A new hybrid watermarking algorithm for MRI medical images using DWT and hash functions.

作者信息

Taher F, Kunhu A, AlAhmad H

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:1212-1215. doi: 10.1109/EMBC.2016.7590923.

DOI:10.1109/EMBC.2016.7590923

Abstract

This paper deals with a blind hybrid digital watermarking algorithm for the copyright protection and authentication of magnetic resonance tomography images. Medical image watermarking requires extreme care when embedding watermark information in the medical images, to protect the image quality from being violated and to avoid the wrong diagnosis that might occur. The proposed algorithm contains robust watermark for the ownership protection and fragile watermarks for checking the authenticity. In the proposed algorithm, the medical image is divided into two regions, called the Region of Interest and Region of Non-Interest using histogram technique and the watermarks are embedded in both wavelet domain and spatial domain in the Region of Non-Interest Area. The proposed hybrid watermarking technique was successfully tested on a variety of MRI medical images and offerd high peak signal to noise ratio and similarity structure index measure values.

摘要

本文提出了一种用于磁共振断层扫描图像版权保护和认证的盲混合数字水印算法。在医学图像中嵌入水印信息时，医学图像水印需要格外小心，以保护图像质量不受损害，并避免可能出现的误诊。所提出的算法包含用于所有权保护的鲁棒水印和用于验证真实性的脆弱水印。在所提出的算法中，利用直方图技术将医学图像划分为两个区域，即感兴趣区域和非感兴趣区域，并且在非感兴趣区域的小波域和空间域中嵌入水印。所提出的混合水印技术在各种MRI医学图像上成功进行了测试，并提供了较高的峰值信噪比和相似性结构指数测量值。