An Efficient Approach for Secure Video Watermarking Through Compression Standard: A Signcryption and H.264 Paradigm

Abstract

            Watermarking is a component of inserting data into the multimedia, for example, image, audio or video. Video watermarking has become an important research issue due to increase in threats of video piracy, content authentication, and ownership integrity.The proposed method discusses digital image watermark embedding and extraction process. Initially, the Discrete Wavelet Transform (DWT) is applied to the input frame for partitioning the blocks. Then the optimal position is found for all the blocks using improved crow search algorithm (ICSO). Here, the updating process is developed by combining firefly with improved crow search optimization. Next the secret image is embedded in watermark embedding process. In order to improve the security, the secret images are encrypted using signcryption algorithm. Then each bit of encrypted image is embedded to the optimal position. At last, merging  all  the  modified  blocks  into one  block  to  construct  the  watermarked  image. Video Compression technique has large demand in the field of video engineering due to storage and bandwidth requirements. The data quantity is very large for digital video and memory of storage devices and transmission line are not infinite. So it is practically not possible for us to store full digital video without processing. Thus, video compression standards techniques had been developed to reduce the data quantity. For that proposed video compression H.264 encoder is utilized here. This standard noticeably reduces the bit size of an I-frame and maintains a high quality of smaller box of pixels. The performance is evaluated in terms of peak signal-to-noise ratio, normalized coefficient value and compressed ratio. The proposed method is implemented in MATLAB platform.