Digital watermark encryption method based on vector parameters

Abstract

The invention relates to a digital watermark encryption method based on vector parameters, which is used for adding a digital watermark to an image file, and specifically comprises the following steps: an image splitting step: splitting the image file into a red component layer, a green component layer and a blue component layer; the encryption step comprises a first encryption step, a second encryption step and a third encryption step; the amplification step comprises a first amplification step, a second amplification step and a third amplification step; the marking step comprises a first marking step, a second marking step and a third marking step; the overlapping step comprises a first overlapping step, a second overlapping step and a third overlapping step; and a synthesis step: synthesizing the red component layer, the green component layer and the blue component layer output in the superposition step into a new image file. The encryption method is simple, reliable in processing,safe in encryption, simple in encryption algorithm and high in processing efficiency, and meanwhile the watermark cannot be easily moved out.

Description

technical field [0001] The present invention relates to the technical field of watermark encryption, in particular to a digital watermark encryption method based on vector parameters. Background technique [0002] Digital watermarking technology is a kind of information hiding technology, which can embed copyright information, identification information, images and other information into carrier images such as video, audio, picture and text in a visible or invisible way. When embedding invisible watermark information, since the embedded watermark information is lower than the minimum granularity detection range that the human visual system can bear, it can be used to prove the source of the work on the one hand, as evidence for infringement prosecution, on the other hand, it can also By detecting and analyzing the watermark of digital works, the integrity protection of works is realized. 1. Gray value encryption: The gray value histogram of the image is essentially a functi...

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Problems solved by technology

3. Two-factor encryption method: Since the implementation principle of position encryption is relatively simple, although the watermark image after position encryption has achieved scrambling in visual effect, it cannot change the original image histogram

[0003] However, the current encryption technology is to encrypt the two-dimensional image features, and in this way, because the encryption method is relatively simple, there is a possibility of being deciphered, and once the hidden digital watermark is deciphered, the file can be remixed. Recompile to obtain unwatermarked files, which can cause greater losses to authors

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