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In order to improve the robustness and imperceptibleness of the image spread spectrum watermark algorithm, a new approach for optimization in 8times8 DCT domain using genetic algorithm (GA) was proposed. GA was used to choose the AC coefficients, which were modified to embed the spread spectrum watermark. The bands were varied to find the most suitable for image with different characteristics. Performance...
In order to increase the speed of genetic watermarking and improve the robustness and imperceptibleness of the algorithm, a new embedding and extracting method with genetic algorithm (GA) was proposed. The AC coefficients of image in DCT domain were modified to embed the watermark. The proposed embedding and extracting method was employed to accelerate the genetic watermarking and to avoid the leak...
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