New Image Watermarking Algorithm Based on DWT and Pixel Movement Function PMF

In this paper, we propose a new algorithm of image watermarking based on Discrete Wavelet Transform (DWT)including a function for pixels movement. The proposed algorithm uses DWT of two levels in order to compact a higher energyin component LL1, and Contrast Sensitivity Function (CSF) to improve the invisibility and robustness, the new Function ofPixel Movement (PMF) is applied toincrease the security properties. Pixel Movement Function (PMF) is a function of Niteration inside each block, this function required a changeable key K calculated in each iteration N for the position of eachblock. Numerical experiments are performed to demonstrate that the proposed method can improve watermarking quality interms of imperceptibility of watermark, capacity of insertion and robustness against different attacks such as Joint Photographic Experts Group (JPEG) compression, noise addition and geometrical attacks