Application of invisible image watermarks to previously half-toned images.
Gordon W. BraudawayFred MintzerPublished in: Security, Steganography, and Watermarking of Multimedia Contents (2004)
Keyphrases
- input image
- image data
- image collections
- image features
- test images
- image retrieval
- original images
- image classification
- image regions
- image pixels
- pixel values
- image analysis
- image processing operations
- image set
- intensity values
- segmentation method
- region of interest
- sample images
- imaging process
- web images
- lighting conditions
- edge detection
- image structure
- illumination conditions
- image matching
- feature points
- secret image
- image content
- segmentation algorithm
- digital imaging
- image blocks
- gray value
- synthesized images
- gray level images
- image database
- contrast enhancement
- single image
- image annotation
- digital images
- keypoints
- multiscale
- object recognition
- spread spectrum
- image quality
- image segmentation
- geometric distortions
- lossy compression
- image watermarking
- gaussian noise
- image processing
- image representation
- gray level