Poulami Ghosh, Rilok Ghosh, Souptik Sinha, Ujan Mukhopadhyay, Dipak kr. Kole and Aruna Chakroborty, St. Thomas' College of Engineering and Technology, India

Due to the rapid growth of internet and technology, protecting digital data is becoming very urgent. In this paper a novel watermarking technique is proposed where both visible and invisible watermarks are embedded in a video. Digital data can be copied easily without any degradation in quality, so the protection of the data is necessary. Digital watermarking is a technology to embed additional information into the host signal to ensure security and protection of multimedia data. The video frames contain both the watermarks, so it is more robust to attacks. The watermarking scheme described here deals with embedding and extraction of the watermarks. Discrete Wavelet transform (DWT) is used to embed the invisible watermark and Peak Signal to Noise Ratio (PSNR) is calculated to measure efficiency of this method.

Digital Watermarking, Visible Watermarking technique and Discrete Wavelet Transform