Wavelet domain color image watermark encryption algorithm based on differential evolution
A color image and differential evolution technology, applied in the field of image algorithms, can solve problems such as poor robustness and poor watermark invisibility, and achieve the effect of strong robustness and good invisibility
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[0042] The present invention will be described in detail below in combination with specific embodiments.
[0043] The present invention uses the strong global convergence ability and robustness of the differential evolution algorithm to propose a wavelet domain color image watermarking algorithm based on differential evolution. First, the original image is converted into a color space, and the RGB format is converted into a color image that is more suitable for human vision. The YIQ color format of the system extracts the luminance component Y, and then performs singular value decomposition on the four different frequency subbands generated by the three-level wavelet decomposition of the Y component using the discrete wavelet transform, and then performs a scrambling and encryption process on the watermark image Level discrete wavelet decomposition, and finally use differential evolution adaptive optimization to select embedding strength to add watermark information in the form...
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