A color image watermarking scheme based on color quantization
Signal Processing
Watermarking text document images using edge direction histograms
Pattern Recognition Letters
An efficient image authentication method based on Hamming code
Pattern Recognition
An adjusted-purpose digital watermarking technique
Pattern Recognition
Structural digital signature for image authentication: an incidental distortion resistant scheme
IEEE Transactions on Multimedia
Fault resilient and compression tolerant digital signature for image authentication
IEEE Transactions on Consumer Electronics
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
A Fragile Digital Image Authentication Scheme Inspired by Wet Paper Codes
Fundamenta Informaticae
A Fragile Digital Image Authentication Scheme Inspired by Wet Paper Codes
Fundamenta Informaticae
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Image authentication is applied to protect the integrity of the digital image. Conventional image authentication mechanisms, however, are unfit for the palette-based color images. Palette-based color images such as GIF images are commonly used for media communications. This article proposes a palette-based color image authentication mechanism. This novel scheme can guarantee the essentials of general authentication schemes to protect palette-based color images. Morphological operations are adopted to draw out the tampered area precisely. According to the experimental results, the images embedded with the authentication data still can preserve high image quality; specifically, the new scheme is highly sensitive to altered areas.