Medical image robust watermarking method based on Gabor-DCT

A medical image, robust watermarking technology, applied in image communication, digital transmission system, security communication device, etc., can solve the problem of image quality damage

Pending Publication Date: 2020-11-24
HAINAN UNIVERSITY
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  • Application Information

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Problems solved by technology

[0003] The development of digital watermarking technology has brought considerable progress in copyright protection, information security, information hiding, etc. Although traditional digital watermarking algorithms have certain invisibility and robustness, such algorithms have carried out image data Modification, how much will cause damage to the quality of the image

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  • Medical image robust watermarking method based on Gabor-DCT
  • Medical image robust watermarking method based on Gabor-DCT
  • Medical image robust watermarking method based on Gabor-DCT

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Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0070] The present invention provides a Gabor-DCT-based medical image robust watermarking method, such as figure 1 shown, including the following steps:

[0071] S101. Perform feature extraction on the original medical image through Gabor-DCT transformation to obtain a coefficient matrix of the original medical image, and generate a feature sequence of the original medical image by hash function operation;

[0072] In practical applications, before performing...

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Abstract

The invention discloses a medical image robust watermarking method based on Gabor-DCT. The method comprises the steps that feature extraction is conducted on an original medical image through Gabor-DCT transformation, and a feature sequence is generated through a hash function; performing chaos scrambling encryption on the original watermark to obtain a chaos scrambling watermark, embedding watermark information into the original medical image, and meanwhile obtaining a binary logic secret key sequence and storing; similarly, performing feature extraction on the medical image to be detected through Gabor-DCT transformation, and generating a feature sequence; extracting an encrypted watermark according to the feature sequence and the binary logic key sequence, and decrypting the encrypted watermark to obtain a reduced watermark; and performing normalization correlation coefficient calculation on the original watermark and the reduced watermark, and determining the ownership and watermark information of the medical image to be detected. The zero watermark embedded in the method has invisibility and robustness, and the privacy information of the patient and the data security of the medical image can be protected.

Description

technical field [0001] The invention relates to the field of multimedia signal processing, in particular to a Gabor-DCT-based robust watermarking method for medical images. Background technique [0002] With the advancement of science and technology and the development of society, human society has entered the information age, but it has also brought some problems, that is, the security of information during transmission, especially for some private and important information. Safety issues in the process need to be resolved urgently. The field of medical image processing is a clear example. A large number of medical images may suffer from a series of problems such as tampering and embezzlement during transmission and sharing in the network. This requires processing the original medical images, improving security technology, and ensuring data In the transmission process, it can not only ensure safe transmission, but also realize information authentication, which is very impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32H04L9/00
CPCH04N1/32165H04N1/3217H04N1/32267H04N1/32283H04L9/001H04L2209/608
Inventor 李京兵肖锡梁黄梦醒陈延伟
Owner HAINAN UNIVERSITY
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