Self-adaptation reversible watermarking method used for medical image authentication and doctor-patient information hiding

Abstract

The invention relates to a self-adaptation reversible watermarking method used for medical image authentication and doctor-patient information hiding and used for integrity authentication of medical images and achievement of hidden communication of doctor-patient information. According to the method, original medical images are blocked, embedding intensity is selected according to requirements of watermarking embedding capacity, and large-capacity, self-adaptation and invisible watermarking information embedding is achieved on a peak point in a block difference histogram through a displacement method. Watermarking information includes doctor-patient information and auxiliary information, and hidden communication of diagnosis information of doctors and personal information of patients is achieved. By extracting the watermarking information at a detection end, integrity authentication of the images is achieved, and the original medical images and the doctor-patient information can be restored in a lossless mode. The method is low in algorithm complexity, high in safety and high in practicality.

Description

technical field [0001] Multimedia information security and multimedia information processing Background technique [0002] The medical images produced by modern medical diagnostic equipment, such as X-ray, CT, MR, ultrasound, endoscopy and angiography, not only play an extremely important role in diagnosis, but also account for more than 70-80% of the medical information of the entire hospital. The medical imaging data not only occupies a large amount of storage space, but also brings huge security risks in the management of information. At the same time, when digital medical information is transmitted on the public network, it is very easy to be intercepted or tampered with, and once the digital medical image used as the basis for diagnosis is abnormal (such as forgery, tampering, information confusion, etc.), not only cannot be used as a medical malpractice judgment If there is no strong evidence, it will delay the best diagnosis and treatment time for patients and even c...

AI Technical Summary

Problems solved by technology

Its advantage is that the watermark is invisible and the calculation is simple, but the disadvantage is that the amount of wate

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