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A multiscale error diffusion technique for digital halftoning

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2 Author(s)
Katsavounidis, I. ; Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA ; Kuo, C.-C.J.

A new digital halftoning technique based on multiscale error diffusion is examined. We use an image quadtree to represent the difference image between the input gray-level image and the output halftone image. In iterative algorithm is developed that searches the brightest region of a given image via “maximum intensity guidance” for assigning dots and diffuses the quantization error noncausally at each iteration. To measure the quality of halftone images, we adopt a new criterion based on hierarchical intensity distribution. The proposed method provides very good results both visually and in terms of the hierarchical intensity quality measure

Published in:

Image Processing, IEEE Transactions on  (Volume:6 ,  Issue: 3 )

Date of Publication:

Mar 1997

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