By Topic

Inverse Halftoning Method of Error Diffused Images Using Look-Up Table with State Reduction

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Makoto Kitamura ; The Graduate School of Engineering, Tokyo Polytechnic University, 1583 Iiyama Atsugi Kanagawa Japan, 243-0297. E-mail: ; Fumitaka Ono

Various methods have been proposed for inverse halftoning (IH) of error diffusion (ED) images. Among them look-up table (LUT) method based on every possible combination of the bi-level output of reference pixels has been considered to be most effective and quite practical since IH function can be generated by simple averaging of the histogram of original con-tone levels of the target pixels in each context, and the image quality can be controlled by the number of reference pixels. In this paper, we propose a hybrid system, in which each context is composed of the combination of the conventional logic of some part of reference pixels and reduced state information given by the number of black pixels in other reference pixels. The result shows that the PSNR compared under the same number of contexts are improved from the conventional method especially when applied to the images not included in the training data

Published in:

2006 IEEE International Symposium on Signal Processing and Information Technology

Date of Conference:

Aug. 2006