Spatial watermark for image verification.
Maria Paula QueluzPedro LamyPublished in: Security and Watermarking of Multimedia Contents (2000)
Keyphrases
- image data
- spatial distribution
- image features
- image processing operations
- spatial information
- image retrieval
- spatial frequency
- single image
- image classification
- input image
- multiscale
- image content
- geometric distortions
- spatial relationships
- digital images
- image representation
- auto correlation
- watermarking technique
- image watermarking
- image fidelity
- image processing
- high resolution
- image blocks
- spatial relations
- low frequency
- digital watermarking
- pixel values
- image compression
- image regions