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A Multi–Resolution, Full–Colour Spatial Gamut Mapping Algorithm

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A multi–resolution, full–colour spatial gamut mapping algorithm (GMA) is proposed in this paper. Its aim is to maintain as much of an original image's overall, and in particular spatial, information as possible within the limits of a reproduction medium's gamut. First, the original image is decomposed into different spatial frequency bands. Second, lightness compression and initial gamut mapping are applied to the lowest frequency band image. Third, the next higher frequency band is added to the gamut mapped image and the result is processed by subsequent gamut mapping transformations. The third step is repeated until the highest frequency band is reached. The effect of this algorithm is that intra–image differences in the original image are well maintained in the gamut mapped reproduction. A psychophysical experiment is then described whose results show that this algorithm is in the pair of most accurate GMAs and can outperform all other algorithms tested here for images which are less accurately reproduced by all GMAs.
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Document Type: Research Article

Publication date: January 1, 2003

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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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