Adaptive image halftoning based on wavelet transform

Yingping Zhang; Mingui Sun; Ching-Chung Li

doi:10.1117/12.150964

27 August 1993 Adaptive image halftoning based on wavelet transform

Yingping Zhang, Mingui Sun, Ching-Chung Li

Proceedings Volume 1961, Visual Information Processing II; (1993) https://doi.org/10.1117/12.150964
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

A new adaptive digital halftoning method is presented where the screen function is designed to be adaptive to the local variation of image intensity. Wavelet transform is used to extract the information of this variation by estimating the gradient at each pixel. Our initial experimental results have shown improved visual effect of the halftoned images.

Citation Download Citation

Yingping Zhang, Mingui Sun, and Ching-Chung Li "Adaptive image halftoning based on wavelet transform", Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); https://doi.org/10.1117/12.150964

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