Research on Halftone Technique of Digital Images

Abstract:

Halftone is the key technique for low-resolution equipment like fax machines and printers to reconstruct grayscale images with black and white binary data. Images produced by classic error diffusion algorithm have more abundant color than those made by ordered dithering method. But the problems still exits that there can distortions and false contour phenomenon and fuzzy edges. This paper puts forward an advanced error diffusion algorithm based on bidirectional feedback and improves its feedback type through adding correction factors. The simulation results show that the bidirectional feedback error diffusion algorithm with correction factors better inhibited the phenomenon of distortions and false contour. Directional texture is also improved greatly.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 4082-4085
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.4082
• Online since: July 2014
• Authors: Wen Bo Dai*, Liang Chen, Xin Wei Zhang, Le Wang, Shi Yue Nie, Kai Jie Yang, Yao Wen Wang
• Keywords: Bidirectional Feedback, Correction Factor, Error Diffusion, Halftone, Ordered Dithering

References

[1] B.E. Bayer, An Optimum Method for Two Level Rendition of Continuous-Tone Pictures；Rec. IEEE Conf. ICC'73, 1973, pp.26-15.

[2] M.A. Seldowitz, J.P. Allebach, and D.E. Sweeney, Synthesis of Digital Holograms by Direct Binary Search; Appl. Opt., vol26, pp: 2788-2798, 1987.

DOI: 10.1364/ao.26.002788

[3] M. Mese and P.P. Vaidyanathan, Optimized Halftoning Using Dot Diffusion and Methods for Inverse halftoning, IEEE. Trans. Image Processing, Apr. 2000, vol. 9, pp.691-709.

DOI: 10.1109/83.841944

[4] Yeyu Fen, GUO Bao, Ma Jia, error diffusion halftoning algorithms based on vision error, Computer Engineering, (2006).

[5] Zhang Fang, research of halftone image detail reproduction techniquebased on error diffusion, Nanjing Normal University, (2010).