Fragile Watermarking with Self-recovery Capability via Absolute Moment Block Truncation Coding

摘要

In this paper, we propose a fragile image watermarking scheme based on Absolute Moment Block Truncation Coding (AMBTC) and self-embedding. According to the constructed binary map and two reconstruction levels, each non-overlapping block in original image can be compressed with the AMBTC algorithm. Then, after scrambling, the compression codes are extended through a random matrix, which can introduce more redundancy into the reference bits to be embedded for content recovery. Also, the relationship between each image block and each reference bit is built so that the recoverable area for tampered image can be increased. Experimental results demonstrate the effectiveness of the proposed scheme.