Performance Analysis of a Novel Image Content Authentication Scheme Using Multiple Watermarks in Dual Domains

This paper presents a multiple watermark based semi-fragile watermarking scheme that tries to balance the requirements of an effective authentication scheme ensuring imperceptibility, tamper detection and localization of tampered areas. The proposed scheme uses multiple watermarks to enable authentication at multiple levels in the wavelet domain. The scheme is flexible and permits the user to decide on the number of watermarks to be embedded based on the nature of the application. It can also accurately locate the tampered locations.