A Digital Watermark for ROI Image Authentication

Digital watermarking technic provides on effective way to protect the image.A digital watermarking algorithm for ROI (region of interest) image authentication in JPEG2000 is proposed. This scheme can be used to remove completely the ROI distortion which results from watermark embedding in the image. The experiment results show that all kinds of malicious tamper can be detected and the tampered place can be identified accurately.