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An adaptive inverse halftoning algorithm

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2 Author(s)
Li-Ming Chen ; Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Hsueh-Ming Hang

A class of inverse halftoning algorithms that recovers grayscale (continuous-tone) images from halftone images is proposed. The basic structure is an optimized linear filter. Then, a properly designed adaptive postprocessor is employed to enhance the recovered image quality. Finally, a multistage space-varying algorithm is developed that uses the basic linear filter structure as before but with spatially adaptive parameters

Published in:

IEEE Transactions on Image Processing  (Volume:6 ,  Issue: 8 )