A Semi-fragile Watermarking for ROI Image Authentication

Delong Cui
2008 2008 International Conference on MultiMedia and Information Technology  
In this paper, a watermarking algorithm for ROI (Regions of Interesting) authentication and tamper detection is proposed. The watermarking is embedded in the DWT (Discrete Wavelet Transform) coefficients of the ROB (Regions of Background). The algorithm uses a hashing to detect whether the ROI of image is tampered, and then uses the watermarking to reconstruct the data of ROI. The experiment results show that the embedded watermark is perceptually invisible and robust to various image
more » ... operations. Most importantly, the tampered place can be identified accurately.
doi:10.1109/mmit.2008.145 fatcat:73htl6l2azfnhg6bf6ezyxoicm