Extended color visual cryptography for black and white secret image.
Ching-Nung YangLi-Zhe SunSong-Ruei CaiPublished in: Theor. Comput. Sci. (2016)
Keyphrases
- visual cryptography
- visual cryptography scheme
- black and white
- secret sharing scheme
- secret sharing
- halftone images
- secret image
- barcode
- gray images
- digital images
- color images
- gray level
- human eyes
- error diffusion
- image regions
- color constancy
- image quality
- key technologies
- key management
- spatial domain
- hough transform
- denoising