Safe information transmission method based on lossless watermark embedding and safe video hiding

Abstract

The invention provides a safe information transmission method based on lossless watermarking embedding and safe video hiding. The method includes the steps of employing a lossless watermark embedding algorithm to embed a lossless watermark in a first sensitive image to obtain a sensitive image with embedded watermark, employing a safe video hiding algorithm to embed the sensitive image with the embed watermark as hidden information in an original video to obtain a video X with secrete information, a receiving end extracting the hidden information from the received video X with secrete information, further extracting and analyzing the extracted hidden information, determining whether the image is tempered during a transmission process, if yes, positioning the tempered position and restoring the image. The lossless watermark embedding technology and high capacity safe video hiding technology are effectively combined, the watermark embedding capacity is substantial increased, the tempering detection is highly accurate, the image is restored in a high quality way, and safe image transmission is ensured.

Description

technical field [0001] The invention belongs to the technical field of information transmission, and in particular relates to an information security transmission method based on lossless watermark embedding and security video hiding. Background technique [0002] With the development of network and multimedia, digital medical information systems, such as hospital information systems and electronic medical record systems, are playing an increasingly important role. However, when medical images are transmitted on the public network, they are vulnerable to malicious tampering, so tampering detection and recovery of medical images are particularly important. [0003] At present, the tamper detection algorithm based on lossless digital watermark is mainly used to detect the integrity of the image. The main detection principle is: divide the image into fixed size blocks, and then select the feature value of the block as a watermark to embed in the image block. If the image is ta...

AI Technical Summary

Problems solved by technology

[0004] However, the current division method based on fixed blocks has the following disadvantages: the accuracy of tamper detection lies in the size of the block, the smaller the size, the more accurate it is, but more watermark information needs to be embedded

In addition, the existing algorithms of watermark embedding technology are still relatively poor in terms of embedding capacity, tamper detection accuracy, and restoration image quality methods, which cannot meet the security requirements of actual information encryption.

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