Visual cryptography for gray-level images by dithering techniques.
Chang-Chou LinWen-Hsiang TsaiPublished in: Pattern Recognit. Lett. (2003)
Keyphrases
- gray level images
- visual cryptography
- gray level
- error diffusion
- secret image
- black and white
- secret sharing scheme
- gray scale
- binary images
- color images
- visual cryptography scheme
- secret sharing
- halftone images
- reconstructed image
- co occurrence
- input image
- fractal dimension
- spatial domain
- texture analysis
- texture features
- image reconstruction
- image quality
- pixel values
- binary patterns
- image segmentation
- human eyes
- motion estimation
- object recognition
- video sequences
- image sequences