Abstract
In this paper, we studied a DWT digital watermarking algorithm based on the 2D-LICM hyperchaotic mapping. The algorithm uses 2D-LICM hyperchaotic mapping to determine the embedding position of watermarking and performs first-order two-dimensional discrete wavelet decomposition on the original carrier image. The watermark information is embedded into the high-frequency coefficients in the horizontal direction according to the location information of the watermark embedding. The watermark image with watermark information can be obtained by inverse wavelet transform. The process of extracting a watermark is the reverse process of embedding a watermark. According to the experimental results, this algorithm is a blind watermark algorithm. The embedded watermark has good transparency, good robustness against noise attacks, JPEG compression attacks, cropping attacks, and geometric scaling attacks, and the algorithm also has high security.
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