A color image watermarking scheme based on color quantization
Signal Processing
Watermarking text document images using edge direction histograms
Pattern Recognition Letters
A Color Image Authentication Method Using Partitioned Palette and Morphological Operations
IEICE - Transactions on Information and Systems
An adjusted-purpose digital watermarking technique
Pattern Recognition
IEEE Transactions on Signal Processing - Part II
Wet paper codes with improved embedding efficiency
IEEE Transactions on Information Forensics and Security
Structural digital signature for image authentication: an incidental distortion resistant scheme
IEEE Transactions on Multimedia
Secret and public key image watermarking schemes for image authentication and ownership verification
IEEE Transactions on Image Processing
Hierarchical watermarking for secure image authentication with localization
IEEE Transactions on Image Processing
A robust image authentication method distinguishing JPEG compression from malicious manipulation
IEEE Transactions on Circuits and Systems for Video Technology
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Image authentication is an important research topic of maintaining the integrity of digital image contents. Fragile image authentication is the technique for achieving the goal of image content integrity maintenance. This article presents a fragile image authentication scheme based on the concept of wet paper codes. The proposed scheme modifies dry pixels on an image to conceal an image signature. The proposed authentication scheme can exactly detect the tampered area on a tampered image. For saving computation cost of signature embedding, an exclusive-or operation is used in the proposed authentication scheme. The experimental results show that the proposedmethod not only has good visual quality of an authorized image but also successfully detects tampered areas on a tampered image.