Color image watermark embedding and extraction method based on fractional hyperchaos and dwt-svd
A color image, watermark embedding technology, applied in image data processing, image data processing, instruments, etc., can solve the problems of the transparency and robustness of digital watermarks that need to be further improved, the amount of intellectual property information is small, and the security is poor.
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[0063] A color image watermark embedding method based on fractional hyperchaos and DWT-SVD according to the present invention, such as figure 1 shown, including the following steps:
[0064] (1), the size of the input image in RGB format is original color image and the image size is color watermarked image of ;
[0065] (2) Use the fractional order hyperchaotic system to generate chaotic sequences, and color watermark images Encrypt to get an encrypted image in RGB format ;
[0066] (3) will encrypt the image Embed raw color image , to get a color image embedded with a color watermark .
[0067] Wherein the fractional order chaotic system used in the step (2) is a fractional order hyperchaotic Chen system,
[0068] Fractional hyperchaotic Chen system:
[0069] fractional order ,System parameters , , , and is a positive real number, using fractional order Chen chaotic system to color watermark image The specific steps for encryption are a...
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