title: A multiscale error diffusion technique for digital halftoning.
abstract: 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.
authors.affiliation: Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA.
authors.forename: I
authors.initials: I
authors.lastname: Katsavounidis
authors.forename: C C
authors.initials: CC
authors.lastname: Jay Kuo