Visual cryptography schemes with perfect reconstruction of black pixels.
Carlo BlundoAlfredo De SantisPublished in: Comput. Graph. (1998)
Keyphrases
- perfect reconstruction
- visual cryptography
- visual cryptography scheme
- filter bank
- secret sharing scheme
- subband
- wavelet transform
- black and white
- multiscale
- lifting scheme
- halftone images
- multiresolution
- lossless compression
- binary patterns
- signal processing
- wavelet decomposition
- gray images
- input image
- secret image
- low pass
- computer vision
- high frequency
- image compression
- high quality