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Soft-Copy and Palette-Color Extension for Color Facsimile Standards

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In the last several years, tremendous progress has been made toward the development of international standards for Color Facsimile within the International Telecommunication Union—Telecommunication Standard Sector, ITU-T (formerly called the CCITT). The first goal of these efforts is to encode and communicate full-color continuous-tone images using the JPEG image compression standard and the CIELAB color space as the color interchange space. For this goal, ITU-T Recommendation T.42 “Continuous-tone colour representation method for facsimile” and new annexes and revised recommendations for Group 3 and Group 4 facsimiles were developed and approved by ITU-T in 1994. The next goals of these efforts are soft-copy and palletized color image extensions for color facsimile. For soft-copy facsimile, color interchange space and optional color reproduction information are being proposed at ITU-T. For encoding palletized color images and lossless continuous-tone images, the JBIG image compression method is being considered by ITU-T. The recent progress in the above proposals are reported in this paper.
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Document Type: Research Article

Publication date: January 1, 1995

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

    Please note: for Purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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