Halftone to continuous-tone conversion of error-diffusion coded images

Authors:
Søren Hein;Avideh Zakhor
Affiliations:
Siemens AG, Corporate Research and Development, München, Germany;Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA
Venue:
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: image and multidimensional signal processing - Volume V
Year:
1993

Citing 3
Cited 0

Digital halftoning

Digital halftoning
Two-dimensional signal and image processing

Two-dimensional signal and image processing
Error-diffused image compression using a binary-to-gray-scale decoder and predictive pruned tree-structured vector quantization

IEEE Transactions on Image Processing

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Abstract

We consider the problem of reconstructing a continuoustone (contone) image from its error-diffused halftoned version. We present an iterative nonlinear algorithm for this problem, and show simulation results that compare the performance of the alorithm to that of conventional linear lowpass filtering. d e find that the new technique results in subjectively superior reconstruction. As there is a natural relationship between error diffusion and ΣΔ modulation, our reconstruction algorithm can also be applied to the decoding problem for ΣΔ modulators.