Fragile Watermarking with Self-recovery Capability via Absolute Moment Block Truncation Coding
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.
KeywordsFragile watermarking AMBTC Tampering detection Content recovery
This work was supported by the National Natural Science Foundation of China (61303203, 61562007), the Innovation Program of Shanghai Municipal Education Commission (14YZ087), and Research Fund of Guangxi Key Lab of Multi-source Information Mining and Security (grant number MIMS15-03).