Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:G6
Session:
Number:G6-4
Lossless Compression of Color Halftone Images using Color Channel Adaptive Templates
Sung-Bum Park, Woo-Sung Shim, Young-Ho Moon, Jong-Bum Choi, Dai-Woong Choi, Jae-Won Yoon,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A novel lossless compression scheme is presented for color halftone images dithered by a clustered dot ordered screen. In the encoder, the context template is designed according to the line pattern of each color channel image. Based on the designed template, then, each channel image is compressed by a context-based arithmetic encoder. Finally, both the compressed image data and the template information are transmitted to the decoder. In the decoder, the template shape information is reconstructed, and then, the halftone image is decoded losslessly. Based on the adaptiveness of the template to the input image, the proposed system yields better compression performance than the conventional JBIG, which saves 35% of the JBIG bitstream.