Data Hiding in Non-Expansion Visual Cryptography Based on Edge Enhancement Multitoning.
Hao LuoFa-Xin YuJeng-Shyang PanPublished in: IAS (2008)
Keyphrases
- data hiding
- visual cryptography
- error diffusion
- halftone images
- secret information
- gray scale
- error correction
- high capacity
- image quality
- spatial domain
- information hiding
- secret sharing scheme
- secret image
- secret data
- gray level
- noise reduction
- human visual system
- frequency domain
- cover image
- image sequences
- high quality
- digital images
- data embedding
- image processing
- test images