IBM Systems Journal
Protecting Digital-Image Copyrights: A Framework
IEEE Computer Graphics and Applications
Application of Principal Component Analysis to Multikey Searching
IEEE Transactions on Software Engineering
Hierarchical watermarking for secure image authentication with localization
IEEE Transactions on Image Processing
An efficient image authentication method based on Hamming code
Pattern Recognition
A Fragile Digital Image Authentication Scheme Inspired by Wet Paper Codes
Fundamenta Informaticae
A Color Image Authentication Method Using Partitioned Palette and Morphological Operations
IEICE - Transactions on Information and Systems
An image authentication method by applying Hamming code on rearranged bits
Pattern Recognition Letters
A bandwidth efficiency of lempel-ziv scheme for data authentication
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part IV
A Fragile Digital Image Authentication Scheme Inspired by Wet Paper Codes
Fundamenta Informaticae
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In this paper, we shall propose a new method for the copyright protection of digital images. To embed the watermark, our new method partitions the original image into blocks and uses the PCA function to project these blocks onto a linear subspace. There is a watermark table, which is computed from projection points, kept in our new method. When extracting a watermark, our method projects the blocks of the modified image by using the PCA function. Both the newly projected points and the watermark table are used to reconstruct the watermark. In our experiments, we have tested our scheme to see how it works on original images modified by JPEG lossy compression, blurring, cropping, rotating and sharpening, and the experimental results show that our method is very robust and indeed workable.