Dual-image-based reversible data hiding method using center folding strategy

Dual-image-based reversible data hiding method using center folding strategy

Abstract— Steganography is the art of hiding secrect information such as image, audio and video. The purpose of Steganography is to conceal the existence of the secret information in any given medium. A third order Debauchies’ wavelet and five level decomposition is utilized to
segregate the signal into five sub-bands, namely, delta 0.5 – 4 Hz, theta (4 – 8 Hz), alpha (8 – 12 Hz), beta (12 – 30 Hz) and gamma (> 30 Hz). First order statistical moments < Final Year Projects 2016 >such as mean, median, variance, standard deviation and mode of the sub-bands are calculated and stored as features. These features serve as an input to the next stage of system classification. Unsupervised learning through K-means clustering is employed since the classes of the signals are unknown. This provides a strong decision making tool for a real-time drowsiness detection system.