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http://dx.doi.org/10.3745/KIPSTB.2004.11B.4.411

A Still Image Compression System using Bitmatrix Arithmetic Coding  

Lee, Je-Myung (호서대학교 대학원 컴퓨터공학부)
Lee, Ho-Suk (호서대학교 컴퓨터공학부)
Publication Information
The KIPS Transactions:PartB / v.11B, no.4, 2004 , pp. 411-420 More about this Journal
Abstract
We propose a novel still image compression system, which is superior in its function than the JPEG2000 system developed by David Taubman. The system shows 40 : 1 high compression ratio using $2\times2$ bitmatrix subblock coding. The $2\times2$ bitmatrix subblock is constructed in the bitplanes by organizing the bits into subblocks composing of $2\times2$matrices. The arithmetic coding performs the high compression by the bitmatrices in the subblock. The input of the system consists of a segmentation mode and a ROI(Region Of Interest) mode. In segmentation mode, the input image is segmented into a foreground consisting of letters and a background consisting of the remaining region. In ROI mode, the input image is represented by the region of interest window. The high compression ratio shows that the proposed system is competent among the JPEG2000 products currently in the market. This system also uses gray coding to improve the compression ratio.
Keywords
Bitmatrix Arithmetic Coding; Segmentation Mode; ROI Mode;
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