title: Halftone to continuous-tone conversion of error-diffusion coded images.
abstract: Considers the problem of reconstructing a continuous-tone (contone) image from its halftoned version, where the halftoning process is done by error diffusion. The authors present an iterative nonlinear decoding algorithm for halftone-to-contone conversion and show simulation results that compare the performance of the algorithm to that of conventional linear low-pass filtering. They find that the new technique results in subjectively superior reconstruction. As there is a natural relationship between error diffusion and SigmaDelta modulation, the reconstruction algorithm can also be applied to the decoding problem for SigmaDelta modulators.
authors.affiliation: Semicond. Div., Siemens AG, Munich.
authors.forename: S
authors.initials: S
authors.lastname: Hein
authors.forename: A
authors.initials: A
authors.lastname: Zakhor