Сжатие изображений без потерь:
LOCO (LOw COmplexity LOssless COmpression) и JPEG-LS
Английские материалы Исходные тексты компрессоров
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Русские материалы |
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| Авторы | Название | Описание | Рейтинг |
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Английские материалы | |||
| ISO | Lossless and near-lossless coding of continuous tone still images | Последний черновик стандарта на JPEG-LS (CD 14495).
FCD 14495 -- public draft, 1997/7/16 PDF.RAR 307 кбайт |
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| Weinberger M., Seroussi G., Sapiro G. | LOCO-I: A Low Complexity, Context-Based, Lossless Image Compression Algorithm | LOCO-I (LOw COmplexity LOssless COmpression for Images) is a novel lossless compression algorithm for continuous-tone images which combines the simplicity of Huffman coding with the compression potential of context models, thus "enjoying the best of both worlds." The algorithm is based on a simple fixed context model, which approaches the capability of the more complex universal context modeling techniques for capturing high-order dependencies...
Proceedings of the IEEE Data Compression Conference, Snowbird, Utah, April 1-3, 1996. PDF.RAR 184 кбайт |
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| Weinberger M., Seroussi G., Sapiro G. | The LOCO-I Lossless Image Compression Algorithm: Principles and Standardization into JPEG-LS | LOCO-I (LOw COmplexity LOssless COmpression for Images) is the algorithm at the core of the new ISO/ITU standard for lossless and near-lossless compression of continuous-tone images, JPEG-LS. It is conceived as a "low complexity projection" of the universal context modeling paradigm, matching its modeling unit to a simple coding unit... We discuss the principles underlying the design of LOCO-I, and its standardization into JPEG-LS.
Hewlett-Packard Laboratories technical report N193, 1998. PDF.RAR 256 кбайт PS.RAR 186 кбайт |
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| Weinberger M., Seroussi G. | From LOCO-I to the JPEG-LS Standard | ...The JPEG-LS standard evolved after successive
refinements of the core algorithm. This evolution, and the main algorithmic components of JPEG-LS are described in this paper...
Technical report HPL-1999-3, HP Laboratories Palo Alto, January, 1999. PDF.RAR 354 кбайт |
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Исходные тексты компрессоров | |||
| University of British Columbia | SPMG/JPEG-LS implementation | Реализация стандарта JPEG-LS в соответствии с ISO/IEC JTC 1/SC 29/WG 1 (ITU-T SG8). Поддерживает как сжатие без потерь, так и сжатие "почти без потерь" (near lossless).
Signal Processing and Multimedia Group (SPMG), University of British Columbia, 1999. Язык: C Сайт проекта: http://www.ece.ubc.ca/spmg/ research/jpeg/jpeg_ls/jpegls.html версия 2.2: без тестовой картинки и GUI-реализации 100 кбайт полная 854 кбайт |
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