Reversible Non-Blind Video Watermarking Based on Interlacing using 3-level DWT & Alpha Blending Technique

The growth of the Internet has frequently increased the availability of digital data such as text, audio, images and videos to the public. Digital watermarking is one of the important techniques to secure digital data in the field of authentication, copyright protection and security. The non-blind watermarking systems have a main problem that for extracting the watermark image from the watermarked image, the original image is required. Due to this it required more memory in both sender and receiver and double bandwidth in communications channel. In this paper a solution and more effective non-blind video watermarking depends on using image interlacing as a new way in the watermarking systems. In this paper DWT based watermarking technique, the frames selected from a video is get decomposed through the DWT in 3-levels and watermark is embedded into the low frequency sub-band of a original frame by using alpha blending technique and the Arnold transform is one of the popular symmetric key as an encryption and decryption method. The results obtained by these techniques are further compared and analyzed. Keyword: Reversible watermarking, interlacing and de-interlacing, non-blind, Arnold transform 3-level DWT and alpha blending.