A new framework for characterization of halftone textures.
Characterization of halftone texture is important for quantitative assessment of halftone quality. In this paper, we develop a new framework based on directional local sequency analysis and a filter bank structure. We decompose a halftone image into subband images, from which we can easily reconstruct the original halftone. Based on these subband images, we define the directional sequency spectrum which is analogous to the two-dimensional Fourier spectrum, and formulate several texture measures. Two test image sets are used to justify these measures.
Chang
Ti-Chiun
TC
School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-1285, USA. ti-chiun.chang@siemens.com
Allebach
Jan P
JP