A novel robust blind digital watermarking scheme based on blocking probability

Now a days, image watermarking is becoming a very important issue for image authentication and copyright protection due to explosive growth of multimedia applications. In this paper, an innovative robust digital watermarking scheme is proposed for image authentication and copyright protection which is based on the probability of existing total number of one´s and zero´s in a single block. The proposed scheme uses scrambled binary watermark to embed four times into different locations of host image in order to ensure high security and to be robust. The extraction of watermark is done by comparing between total amount of detecting `one´ and `zero´ bit from each block of size eight by eight. The experimental results show that the proposed method provides perceptually invisible watermark, high security and robustness against various image processing and geometrical attacks such as filtering, cropping as well as salt and pepper noise attacks.