Reconstruction of continuous tone images from their error-diffused halftone version

Soren Hein; Avideh Zakhor

doi:10.1117/12.152705

8 September 1993 Reconstruction of continuous tone images from their error-diffused halftone version

Soren Hein, Avideh Zakhor

Proceedings Volume 1913, Human Vision, Visual Processing, and Digital Display IV; (1993) https://doi.org/10.1117/12.152705
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1993, San Jose, CA, United States

Abstract

We consider the problem of reconstructing a continuous-tone (contone) image from its halftoned version, where the halftoning process is done by error diffusion. We 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 lowpass filtering. We find that the new technique results in subjectively superior reconstruction. As there is a natural relationship between error diffusion and (Sigma) (Delta) modulation, our reconstruction algorithm can also be applied to the decoding problem for (Sigma) (Delta) modulators.

Citation Download Citation

Soren Hein and Avideh Zakhor "Reconstruction of continuous tone images from their error-diffused halftone version", Proc. SPIE 1913, Human Vision, Visual Processing, and Digital Display IV, (8 September 1993); https://doi.org/10.1117/12.152705

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