Investigations and analysis of data hiding techniques in video watermarking

Abstract

Digital video watermarking technique is used to hide the secret data newlinefrom various sources, such as medical field and several internet fields. Here, newlinethe digital data is hided in the video watermarked image by means of newlineembedding. Embedding is the process of hiding secret data in the video newlinewatermarked image. The embedded data is known as watermark, and the newlinecover data after embedding is called as watermarked data. Due to the growth newlineof the internet sources in the digital media e.g., audio, image and video, the newlinedata hiding mechanism is implemented to secure the important data in the newlinevideo watermarked image. The hidden data includes real-time video, speech, newlinetext, hypertext and image data. The hidden data remains intact as the host newlinevideo is compressed, stored and transmitted. Once the video is received, the newlineintentional audience can extract the information. In general, the embedded newlinedata may be extracted from the video stream automatically. The advantages of newlinedigital representation are easy and accurate processing, manipulation, storage, newlineand transmission of information. A watermark is a logo, text, or pattern that is newlineintentionally superimposed into another image. It is used to protect the newlineconfidential information, namely integrity, validity, security and ownership of newlinemultimedia data like text, digital imageries, audio, video, software and to newlineindicate the validity of a legal document. These techniques require enough newlinesecurity and robustness to avoid the embedded information from being newlinedestroyed and removed.Various areas, such as transmission monitoring, fingerprinting ,covert communication and authentication, e-commerce, e-government makes widespread of digital watermark technology. Watermark capability (also newlinenamed payload) estimates information on host image. Capacity is described newlinewith number of bits performed through every host image subsequent to newlineinserting watermark image. Consequently, it is complicated to inset extra newlinewatermark information that requires prerequisite based on useful application. newlineThe capacity is affected by the addition of watermark information though newlinefilling the robustness and inaudibility of watermark newline newline