Keyphrases
- image authentication
- tamper detection
- semi fragile watermarking
- image content
- input image
- geometric distortions
- public key
- image representation
- image segmentation
- jpeg compression
- image data
- lossy compression
- image retrieval
- image editing
- high resolution
- watermarking technique
- multimedia
- image classification
- digital watermarking
- image features
- additive noise
- gaussian noise
- key management
- low frequency
- pixel values
- wavelet transform
- image regions
- authentication scheme
- multiresolution
- digital images
- image quality