Optimal wavelet transform using Oppositional Grey Wolf Optimization for video steganography
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Optimal wavelet transform using Oppositional Grey Wolf Optimization for video steganography Meenu Suresh 1
& I. Shatheesh Sam
2
Received: 12 September 2019 / Revised: 27 May 2020 / Accepted: 9 July 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract
Data hiding in video is a method used to hide secret information within the video which is useful for secure multimedia data communication. The main goal of any video steganographic system is to reduce distortion of video and to secure the embedded data. A novel approach of hiding data using Oppositional Grey Wolf Optimization (OGWO) is proposed to minimize distortion and to enhance security so as to get superior video quality. In this work, scene changes are used to identify the key frames to hide the secret data. The scene changes are detected using Discrete Cosine Transform (DCT). Once the key frames are detected, OGWO is used at this stage to select the optimal region to embed the secret data. Lastly, the optimal region for entrenching is construed to embed the secret data using Discrete Wavelet Transform (DWT). Then, the payload and video are normalized using Inverse DWT to boost the video quality. The performance of the proposed system is measured using Peak Signal to Noise Ratio (PSNR), Embedding Capacity and Normalized Correlation (NC). The comparison results show that the proposed method delivers more security and minimizes distortions for improved video quality. Keywords Video steganography . Scene change detection . DCT . DWT . OGWO . PSNR NC
1 Introduction Nowadays computer and internet technology have become more popular and also digital media distribution is increasing day by day. Digital information is modified and intercepted * Meenu Suresh [email protected] I. Shatheesh Sam [email protected]
1
Department of Computer Science, Nesamony Memorial Christian College affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu 627012, India
2
Department of PG Computer Science, Nesamony Memorial Christian College, affiliated to Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, Tamil Nadu 627012, India
Multimedia Tools and Applications
easily by users on open channels. In this case, security is a major concern and hence so many researchers have proposed several methods for data security. Data hiding is the current trend for secure communication[8]. Data hiding is the process of embedding secret information inside a media or data sources without changing its perceptual quality[2]. In data hiding technology, videos have attained practical significance due to the technological development of multimedia system[14]. Since data hiding technology provides a feasible and efficient solution, it is used for embedding a secret message into compressed video bit stream. It is widely used in several applications such as copyright protection, access control, content annotation and transaction tracking[7]. It is used for error detection and concealment in video transmission. Videos
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