Meaningful visual secret sharing based on error diffusion and random grids.
Shen WangXuehu YanJianzhi SangXiamu NiuPublished in: Multim. Tools Appl. (2016)
Keyphrases
- error diffusion
- gray scale
- image quality
- quantization error
- inverse halftoning
- gray level
- noise shaping
- halftoning algorithm
- human visual system
- frequency domain
- secret sharing
- visual secret sharing
- data hiding
- halftone images
- blue noise
- binary images
- low level
- visual quality
- high frequency
- privacy preserving
- digital images
- image processing