Visual secret sharing in halftone images by multi-scale error diffusion.
Po-Chyi SuTzung-Fu TsaiYu-Chien ChienPublished in: Multim. Tools Appl. (2018)
Keyphrases
- error diffusion
- halftone images
- multiscale
- gray scale
- inverse halftoning
- image quality
- error diffused images
- human visual system
- data hiding
- gray level
- black and white
- natural images
- halftoning algorithm
- frequency domain
- image segmentation
- edge detection
- gray scale images
- wavelet transform
- continuous tone images
- image processing
- wavelet decomposition
- original images
- binary images
- direct binary search
- local binary pattern
- visual information
- wavelet coefficients
- least mean square
- color images
- image compression