Keyphrases
- error diffusion
- gray scale
- image quality
- inverse halftoning
- halftoning algorithm
- color reproduction
- quantization error
- halftone images
- color palette
- gray level
- human visual system
- display devices
- frequency domain
- noise shaping
- data hiding
- color images
- binary images
- visual quality
- edge detection
- direct binary search
- image processing