International Journal of Computer Science Issues

More than a traditional journal...

A huge amount of digital multimedia data is broadcasting daily over the internet. Since digital data can be easily duplicated, intellectual property right protection techniques have become an important issue. In this study, a robust algorithm based on DWT for video copyright protection is proposed. Firstly, the RGB video is converted into YUV color component video, then, in order to make the watermark imperceptible, the luminance layer is only used to embed the watermark and the chrominance layer is left unchanged. In this algorithm, DWT is performed on both watermark image and video I-frames. Using a multiplicative hiding method, watermark image is embedded in its corresponding frequency coefficients of DWT in video I-frames. Based on experimental results the presented method maintains the high transparency of video stream meanwhile resist the watermark against a variety of attacks like: noisy attacks, filtering attacks, blurring attack and compression attacks.