Medical image zero-watermark embedding method based on NSCT combined transformation

Abstract

The invention discloses a medical image zero-watermark embedding method and device based on NSCT combination transformation, equipment and a readable storage medium. The scheme is implemented on the basis of hybrid transformation and Arnold transformation of NSCT, RDWT and DCT, and in the watermark embedding process, firstly, a more robust medical image feature vector is extracted in combination with the NSCT, the RDWT and the DCT so as to resist geometric attacks. Secondly, the watermark is encrypted by utilizing Arnold transformation, so that the security of watermark information is enhanced; and finally, watermark embedding is realized by using a zero watermark technology, so that the integrity, the watermark capacity and the invisibility of the medical image are ensured, the defect oforiginal image data modification caused by a traditional watermark embedding technology is avoided, and the quality of the medical image is ensured. Therefore, even if the patient information is attacked intentionally or unintentionally, the medical image and the watermark cannot be cracked as long as the unauthorized user does not know the secret key, so that the personal information of the patient is truly protected.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a zero-watermark embedding method, device, equipment and readable storage medium for medical images based on NSCT combined transformation. Background technique [0002] In the field of biomedicine, a large number of digital data are generated every day, including ultrasound, X-ray pictures, CT and MRI, etc. Most of these materials use the PACS system for image storage and remote communication, but transmission and storage in the cloud environment are easy to be stolen or tampered with, making researchers conduct in-depth research on the confidentiality, integrity and authenticity of medical images. Research. At the same time, medical images contain a large amount of important information of patients, and they face security threats when they are stored and transmitted on the Internet. Therefore, it is urgent to take protective measures for medical images of patients....

AI Technical Summary

Problems solved by technology

[0007] The purpose of this application is to provide a medical image zero-watermark embedding method, device, equipment and readable storage medium based on NSCT combined transformation, to solve the problem that the traditional watermark embedding scheme cannot avoid the leakage of medical image information and watermark information, and the The problem of poor stickiness

Images