JPEG2000-BASED IMAGE AUTHENTICATION EXTENDED BY REMOVABLE LOGO EMBEDDING AND DETAIL COEFFICIENT SCRAMBLING

摘要

In this work, we propose an extension of a new image authentication system in the discrete wavelet transform domain (DWT) of JPEG2000. After generation and embedding of the signature watermark for the purpose of image content verification, we embed visible logos in the high frequency DWT-coefficients for the protection of rightful ownership. Further, in this new securing system, we propose to scramble the detail coefficients based on a cipher key to control image access. Generation as well as embedding of the signature watermark is adapted to the image content for performance improvement. In the paper, we show that our semi-fragile authentication is robust against non-malicious modifications, such as lossy compression, noise, image blurring and sharpening, changes of luminance and contrast as well as scaling. If the rightful data access is granted, the visible logo can be removed after image distribution.