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A Secure Image Protection for IoT Applications Using Watermarking Technique and Non-Linear Henon Chaos
Abstract
In the digital IoT world, image watermarking has been determined as a solution of copyright problems and protecting the sensitive images from unauthorized access. A novel invisible watermarking technique which is secure against unapproved extraction of watermark and strong against different attacks has been proposed. Chaos-based image watermarking provides higher security than the traditional methodology. The proposed chaos-based watermarking involves three phases. In the first phase, a two-dimensional Henon chaos map is utilized to generate the chaotic series which act as keys for embedding the watermark. Before embedding the watermark, the image is encrypted by using Zig-Zag confusion process, and then in the last phase, the watermark image is converted into quaternary sequence, and by using random key of Henon map, each bit is embedded in the original image. The proposed model is applicable for both greyscale and colour images. Different performance analysis such as PSNR, SSIM will be used to identify the strength and quality of the proposed watermarking technique.
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