A Hybrid & Robust Wavelet Based Video Watermarking Schemes for Copyright Protection Using Optimization Based Techniques

Abstract

Watermarking is a component of inserting data into the multimedia, for example, image, audio or video. This
paper propose a method for video watermarking using hybrid DWT-SVD to protect the copy right of images. In order to
improve the efficiency of video watermarking two main processes are used namely watermark embedding process and
watermark extraction process. Before embedding process the input video sequence convert into number of frames. Here
singular value decomposition (SVD) transforms using Firefly Algorithm provides this objective of an optimal robust
watermarking technique. Multiple scaling factors are used to embed the watermark image into the host by multiplying these
scaling factors with the Singular Values (SV) of the host image. Firefly Algorithm is used to optimize the modified host
image to achieve the highest possible robustness and transparency. The result obtain from the watermark embedding process
is the watermark video sequence. Next watermark extraction process is carried out. It is the reverse process of watermark
embedding. Thus, protection from copyright infringement is a challenging task and hence requires techniques that provide
the security to the digital information. Cryptography, Stenography and watermarking have been developed as emerging
fields to face the challenges. In watermark extraction process, it extracts the watermark image from the watermark video
sequence.