Acquisition and Reproduction of Color Images: Colorimetric and Multispectral Approaches
The goal of the work reported in this dissertation is to develop methods for the acquisition and reproduction of high quality digital color images. To reach this goal it is necessary to understand and control the way in which the different devices involved in the entire color imaging chain treat colors. Therefore we addressed the problem of colorimetric characterization of scanners and printers, providing efficient and colorimetrically accurate means of conversion between a device-independent color space such as the CIELAB space, and the device-dependent color spaces of a scanner and a printer.
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½ ½ ½¾ AGFA algorithm analysis applied Berns calibration camera responses CCD camera channels CIELAB space CIELAB values CIEXYZ color chart color difference color gamut Color Imaging Conference color management color matching functions Color Science color space colorimetric colorimetric characterization components Crettez deﬁned Delaunay triangulation denoted device eigenvectors Equation evaluate ﬁeld Figure ﬁlters ﬁrst ﬁve gamut mapping Hardeberg heuristically illuminant image acquisition system input interpolation IS&T IS&T and SID’s Keusen light linear Macbeth matrix method multispectral image Munsell noise obtained octahedron optical optimal painting pixel Praefcke printer Proceedings of IS&T proposed pseudoinverse reﬂectance spectra RGB values samples scanner RGB Schmitt Scottsdale Section sensitivity estimation simulation singular values speciﬁc spectral radiance spectral reﬂectance spectral sensitivity surrounding structure Systems and Applications techniques tetrahedron tion transformation triangulation tristimulus Trussell vector Wavelength
Page 9 - Color consists of the characteristics of light other than spatial and temporal inhomogeneities; light being that aspect of radiant energy of which a human observer is aware through the visual sensations which arise from the stimulation of the retina of the eye.
Page 36 - The following year was spent transforming this informal consortium into the International Color Consortium (ICC), a legal, formal, non-profit organization. The ICC bylaws state that "the International Color Consortium was established in 1993 by eight industry vendors for the purpose of creating, promoting and encouraging the standardization and evolution of an open, vendor-neutral, cross-platform color management system architecture and components.
Page 10 - All the Colours in the Universe which are made by Light^ and depend not on the * Power of Imagination...
Page 17 - Additive color mixing is defined as a color stimulus for which the radiant power in any wavelength interval, small or large, in any part of the spectrum, is equal to the sum of the powers in the same interval of the constituents of the mixture, constituents that are assumed to be optically incoherent .