Robust and Secure Lucas Sequence-Based Video Watermarking

Abstract

Currently, video copyright protection has become a challenging issue due to the growth of Internet technology and extensive use of multimedia. Digital watermarking plays an important role in protecting multimedia objects as they become easier to modify, copy and exchange data. Embedding the watermark in the video is done in different ways by many researchers. Most of the existing video watermarking (V-W) schemes directly apply image watermarking methods to raw and compressed video. Due to redundancy in the video frames, watermark embedding and extraction become time-consuming. To sort out this problem, the watermark is embedded into the selective key-frames. In this paper we use Lucas sequence (LS) for selection of key-frames and the watermark is embedded in selected key-frames only. The proposed scheme is the combination of DWT and DCT transforms that improves the performance. This approach not only saves time required for selecting key-frames but also proves to be better in terms of resistance to various types of attacks like frame dropping, frame averaging and noise addition. The proposed LS-based scheme is compared with [1, 2, 3]. It is observed that it outperforms in terms of security, robustness and imperceptibility. The performance of the proposed algorithm is evaluated using commonly used parameters PSNR and NCC. It is found that their average values are improved considerably. The extensive experimental simulations show that the proposed scheme is more efficient and robust against common attacks such as rotation, scaling, cropping, common image processing operations and geometric distortion.