Digital image mixed watermarking method based on time domain and frequency domain synchronization

By adopting a watermark embedding method with time-domain and frequency-domain synchronization in digital images and an extraction framework based on deep learning, the problems of limited adaptability and poor protection of watermarks in the prior art are solved, and reliable copyright protection for digital images is achieved.

CN119741182AActive Publication Date: 2025-04-01DATA SPACE RES INST
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Patent Information

Application Number
CN202510239463.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-03
Publication Date
2025-04-01
Estimated Expiration
2045-03-03

AI Technical Summary

Technical Problem

The existing digital image mixed watermarking technology has problems such as limited adaptability and poor protection effect in protecting copyrights, especially when facing complex attack methods, the distribution rules of watermark information are easily destroyed, making it difficult for the extraction algorithm to accurately identify and restore watermarks.

Method used

The digital image mixed watermark method based on time domain and frequency domain synchronization is adopted, and the time domain and frequency domain synchronized watermark embedding algorithm is used to monitor changes in the time domain of the image, select suitable frequency embed watermarks in the frequency domain, and use a deep learning-based extraction framework to identify the watermark features in the damaged image through training models.

Benefits of technology

It realizes effective protection of watermark information when facing various common image processing attacks, ensures that the watermark can maintain high integrity after being attacked, and improves the robustness of watermarks in complex environments, providing reliable copyright protection for digital images.

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Abstract

The invention relates to the technical field of digital image processing, in particular to a digital image mixed watermarking method based on time domain and frequency domain synchronization. According to the method, a time domain and frequency domain synchronous watermark embedding algorithm and a multi-stage watermark extraction algorithm are innovatively combined, so that the concealment and robustness of the watermark are remarkably improved, and the problems of digital image copyright protection in the face of printing and scanning attacks and network attacks are effectively solved; the method ensures the security and reliability of digital image copyright protection, provides a more advanced and effective technical means for digital image copyright protection, has the advantages that a time domain and frequency domain synchronous watermark embedding algorithm enables watermarks to be fused into image details and is high in concealment, the watermarks are effectively protected in the face of various attacks, and the security and reliability of digital image copyright protection are improved. The multi-stage watermark extraction algorithm ensures accurate extraction when the image quality is reduced, and the watermark performance is integrally improved.
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