Keyphrases
- error diffusion
- color images
- gray scale
- color space
- gray scale images
- inverse halftoning
- quantization error
- grayscale images
- binary images
- image processing
- image quality
- noise shaping
- color information
- halftoning algorithm
- color quantization
- halftone images
- mid frequency
- gray level
- gray images
- color palette
- human visual system
- color channels
- computational complexity