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With the swift development of computer network and digitalization technology, researches on the digital copyright protection becomes specially important. Images, texts, and common signatures are used as invisible watermarks in traditional digital copyright protection systems, which will lead to a complicated embedding process. In this paper, JUNA(Joint Unit for Numbering Algorithm) Lightweight Digital...
A scheme is proposed to hide data in images based on a prioritised ordering of the content of the host image. The embedding process uses the watermark strength to determine the ordering of the 16 regions resulting from the second level wavelet transform DWT decomposed content of the host image. The DWT decomposed sub-bands of the cover image were analysed, transformed using the Pixel Value Difference...
A rotation resistant image watermarking algorithm is proposed to solve digital image watermarking extracting difficultly when rotating with any angle. The algorithm firstly deal watermarking with binary serialization, and then divide the source image into several circle area with the center point of the image, segment the circle area according to length of the binary watermarking sequences with certain...
A digital watermarking algorithm based on depth perceptual region of interest (DP-ROI) for copyright protection of three dimension (3D) images is proposed. First, DP-ROI is defined according to the three-dimensional depth sensation of human visual system and extracted through depth image and gray image. Then, gray image is transformed with discrete cosine transformation (DCT). Several middle frequency...
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