An adaptive inverse halftoning algorithm |
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Authors: | Li-Ming Chen Hsueh-Ming Hang |
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Affiliation: | Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu. |
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Abstract: | 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. |
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