A comparative study on video steganography in spatial and IWT domain
K. Rosemary Euphrasi, M. Mary Shanthi Rani · 2016
Steganography is a technique for embedding digital information inside another digital medium such as text, images, audio signals or video signals, without revealing its presence in the medium. In video steganography, a video file will be used as a cover medium within which any secret message can be embedded. In steganography, the secret information can be hidden either directly by altering the pixel values of the images in the spatial domain or in the frequency components of the images after transforming the images into frequency domain by using transformation algorithms such as DCT (Discrete Cosine Transform), DWT(Discrete Wavelet Transform) and IW(Integer Wavelet Transform). In this paper, secret data are embedded inside a video file using both the methods, spatial and frequency, and the outcomes are analysed and compared. Results are compared based on PSNR (Peak Signal to Noise Ratio), MSE (Mean Square Error), BER (Bit Error Rate) and Standard Deviation. The findings of this study are given as suggestions for further enhancement.