Keyphrases
- error diffusion
- iterated conditional modes
- markov random field
- gray scale
- image quality
- least mean square
- quantization error
- gray level
- simulated annealing
- human visual system
- inverse halftoning
- expectation maximization
- noise shaping
- graph cuts
- energy minimization
- halftoning algorithm
- belief propagation
- loopy belief propagation
- frequency domain
- data hiding
- halftone images
- image segmentation
- pairwise
- gray scale images
- energy function
- bit rate
- high quality