An efficient watermarking algorithm for medical images

被引:0
|
作者
Ali Al-Haj
Heba Abdel-Nabi
机构
[1] Princess Sumaya University for Technology,Department of Computer Engineering
来源
关键词
Medical image security; Reversible data hiding; Reversibility; Separability; Spatial domain watermarking; Encrypted domain watermarking; Embedding capacity; Entropy;
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学科分类号
摘要
Medical images exchanged over vulnerable networks are sensitive to modifications or tampering which could lead to misdiagnosis, risking the lives of the patients. Therefore, to provide safe and secure transmission of medical images, key security requirements such as authenticity, integrity, and confidentiality must be addressed. In this paper, a novel and efficient algorithm is proposed which provides security services for transmitted medical images in tele-medicine applications. The proposed algorithm employs joint encryption/watermarking procedures to provide the required security services, as well as to provide control access privileges at the receiving side. The algorithm is based on reversible data hiding principles that guarantee the extraction of the hidden data while restoring the original image unaffected. The embedded data is basically two watermarks; a spatial domain watermark and an encrypted domain watermark. The dual watermarks allow the authenticity and integrity of the transmitted medical images to be verified in the spatial and encrypted domains. The proposed algorithm has been extensively evaluated using three performance metrics; embedding capacity, visual image quality, and entropy. The ability of the algorithm to fulfill the security, reversibility, and separability requirements has been validated.
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页码:26021 / 26047
页数:26
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