A fast segmentation algorithm for bi-level image compression using JBIG2

TitleA fast segmentation algorithm for bi-level image compression using JBIG2
Publication TypeConference Paper
Year of Publication1999
AuthorsTompkins, D. A. D., and F. Kossentini
Conference NameImage Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Pagination224 -228 vol.1
Keywordsbi-level image compression, compression performance, data compression, encoders, encoding, fast segmentation algorithm, image coding, image segmentation, JBIG2, reverse-coloured text, very high compression rates

The emerging JBIG2 standard allows compliant encoders to achieve very high compression rates on bi-level images, especially when images are properly segmented into regions of line-art, halftones and text. We propose a fast method that is very effective at separating text from non-text regions, even when the regions are nonrectangular or have skew. Our method can also detect regions of reverse-coloured text. In most cases, our method increases the compression performance of the encoder. More importantly, our method can improve encoding speeds considerably, often by an order of magnitude


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