Flip Extended Visual Cryptography for Gray-Scale and Color Cover Images.
Lu WangBin YanHong-Mei YangJeng-Shyang PanPublished in: Symmetry (2021)
Keyphrases
- gray scale images
- gray scale
- color images
- halftone images
- binary images
- binary and gray scale
- inverse halftoning
- gray level
- image regions
- image data
- input image
- grayscale images
- error diffusion
- image analysis
- color information
- secret image
- visual cryptography
- multispectral images
- edge detection
- multiple images
- pixel values
- visual information
- binary patterns
- human eyes
- co occurrence
- multiscale