### Citations

319 |
Digital Halftoning,
- Ulichney
- 1988
(Show Context)
Citation Context ...rictly "causal" with respect to the scanned direction so that only the "past" errors are diffused to the current location. In particular, we have (0,0) ¢ S. For most practical error diffusion systems =-=[1,9-11]-=-, the coefficients of the error diffusion kernel hk,1 satisfy hk,1 2: 0; L: hk,1 = 1. (4) (k,I)ES An example of a kernel with four coefficients is the Floyd-Steinberg kernel [9] as shown in Fig. 2. To... |

103 |
An adaptive algorithm for spatial grey scale,”
- Floyd, Steinberg
- 1976
(Show Context)
Citation Context ...diffusion systems [1,9-11], the coefficients of the error diffusion kernel hk,1 satisfy hk,1 2: 0; L: hk,1 = 1. (4) (k,I)ES An example of a kernel with four coefficients is the Floyd-Steinberg kernel =-=[9]-=- as shown in Fig. 2. To actually perform the error diffusion process using (1)-(3), it is necessary to define the boundary condition of either the state variable or the quantizer error. We assume as u... |

55 | A survey of techniques for the display of continuous tone pictures on bilevel displays,” - Jarvis, Judice, et al. - 1976 |

19 | New results on reconstruction of continuoustone from halftone - Analoui, Allebach - 1992 |

9 |
Halftone Image Quality Analysis Based on a Human Vision Model,’’
- Lin
- 1913
(Show Context)
Citation Context ...rices. The spectra of error diffused images, however, do not have strong periodic components, and the local energy content in the spectra increases gradually as one moves from low to high frequencies =-=[3]-=-. Inverse halftoning for dithered halftone images has been reported in [4-6]. In these cases, combinations of filtering and statistical processing in the spatial domain are applied to reconstruct gray... |

9 | Inverse halftoning - Miceli, Parker - 1992 |

9 | Retrieval of gray images from digital halftones - Fan - 1992 |

2 |
Error diffused image compression using a halftone-tograyscale decoder and predictive pruned tree-structured vector quantization," submitted to
- Ting, Riskin
- 1992
(Show Context)
Citation Context ...rrection, interchanging between halftone methods (rehalftone), facsimile image processing, and many others. Inverse halftoning has also been applied recently in the lossy compression of binary images =-=[2]-=-. Popular halftoning algorithms can in general be classified into two categories, viz.J ordered dither and error diffusion. They differ both in their processing structures and in the characteristics o... |

2 |
Reconstruction of continuous tone images from their error-di used halftone version
- Hein, Zakhor
- 1993
(Show Context)
Citation Context ...s has been reported in [4-6]. In these cases, combinations of filtering and statistical processing in the spatial domain are applied to reconstruct gray scale images from their dithered halftones. In =-=[7]-=-, the error diffusion process is modified so that inverse halftoning of error diffused images is posed as a quadratic programming problem where a mean square error criterion is minimized. Because the ... |

1 |
A Bayesian approach to palette restoration
- Schweizer, Stevenson
- 1993
(Show Context)
Citation Context ...oximate solution is found. Recently, a statistical technique based on the Bayesian approach has also been applied to reconstruct continuous tone images from both dithered and error diffused halftones =-=[8]-=-. In [2], a lossy compression algorithm for error diffused images is reported where a binary image is first inverse halftoned, and the resulting gray scale image is then encoded and finally rehalftone... |