earticle

영어

Video contents may adopt various conditions for one may access a system and this system may adopt pay-per-view. This scrambling method is used in commercial way to protect copyright. As image and video contents are widely released, content protection becomes an important issue. In this paper, we present a scrambling method which uses magnitude and phase decomposition. A given image is transformed into spectral domain to obtain magnitude and phase components. The magnitude component is transferred to unauthorized individual. However phase component is selectively distributed to protect contents because phase component contains important information. Simulation results show that the proposed method gives reliable performance.