The problem of reconstructing a continuous-tone image given its ordered dithered halftone image is considered. We utilize a modular class of non-linear filters, denoted as binary permutation filters, which can reconstruct the continuous-tone information as well as image details which provide important visual cues. Binary permutation filters are based on the space-rank ordering of the halftone samples which is provided by the multiset permutation of the "on" pixels in a halftone observation window. By varying the space-rank order information utilized in the estimate, for a given window size, we obtain a wide range of filters. We present simulations showing that binary permutation filters are modular, robust to image source characteristics, and that their results produce high visual quality image reconstruction.<>
Inverse ordered dithered halftoning using permutation filters
Proceedings of 1st International Conference on Image Processing ; 2 ; 1017-1021 vol.2
1994-01-01
583103 byte
Conference paper
Electronic Resource
English
Inverse Ordered Dithered Halftoning using Permutation Filters
British Library Conference Proceedings | 1994
|Inverse Halftoning for Monochrome Pictures
British Library Conference Proceedings | 1994
|Inverse halftoning for monochrome pictures
IEEE | 1994
|Improved Inverse Halftoning Method via Maximum A Posteriori
British Library Online Contents | 2005
|A Novel Bi-Level Halftoning Technique Based on Multi-Level Halftoning
British Library Conference Proceedings | 2005
|