By JÃ¡n MoroviÄ
Gamut mapping algorithms, carried out via colour administration structures, are an essential component of the colour copy strategy. via adjusting the colours with acceptable algorithms, gamut mapping permits unique colours to ‘fit’ within otherwise formed colour gamuts and authentically transfers photographs throughout various media. This ebook illustrates the diversity of attainable gamut mapping concepts for cross-media colour copy, evaluates the functionality of assorted ideas and advises on designing new, stronger ideas. beginning with overviews of colour technology, replica and administration, the textual content includes: a special survey of ninety+ gamut mapping algorithms masking color-by-color aid and enlargement, spatial aid, spectral relief and gamut mapping for area of interest applications;a step by step instance of a color’s trip from unique to replica, through a electronic workflow;a specific research of colour gamut computation, together with a comparability of different thoughts and a demonstration of the gamuts of salient colour units and media;a presentation of either measurement-based and psychovisual overview of person colour reproductions;an evaluation of other techniques to gamut mapping proposed via the ISO and the CIE together with an research of the construction blocks of gamut mapping algorithms and the criteria affecting their performance.Color Gamut Mapping is a entire source for training colour and imaging engineers, scientists and researchers operating within the improvement of imaging units, software program and solutions. it's also a worthy reference for college students of colour and imaging technological know-how, in addition to photographers, photo designers and artists.
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Additional info for Color Gamut Mapping (The Wiley-IS&T Series in Imaging Science and Technology)
This focus on differences, which is already indicated by the nature of ganglion cell receptive ﬁelds, can further be seen in the phenomena of simultaneous contrast and crispening (Fairchild, 2005: 113–115). What simultaneous contrast refers to is the color of a stimulus depending on the color surrounding it. 13a shows a pair of gray patches connected with a line and surrounded in one case by white and in the other case by black. However, even though the patches and line match in their physical properties, their appearance is different: the patch on the black background looks lighter than the other patch and this is a consequence of the visual system's focus on and ampliﬁcation of differences.
Using ÁE (or any other model for that matter) outside the conditions for which it was derived is unreliable and can result in incorrect predictions. , 2001). While predicting the perceived magnitude of color difference is a key step, it is important to realize that preferences also apply when a color needs to be substituted by another and zero ÁE is not possible. , 2007). For example, there is likely to be a preference for alternatives that are closer in lightness than in chroma (Ebner and Fairchild, 1997); and, depending on the original's hue, some hue change directions will be preferred over others (Taplin and Johnson, 2004).
If color space's predictions and the attributes themselves that they predict are confused, and this often happens, then it becomes difﬁcult to talk about the imperfections of a color space and to work towards overcoming them. For more detail on this topic and its impact on gamut mapping, see Chapter 6. BASICS OF COLOR SCIENCE 29 In terms of color difference prediction, a signiﬁcant effort has gone into the development of equations that make more accurate predictions of color difference judgments, with the latest and most accurate one being CIE ÁE2000 (CIE, 2001).
Color Gamut Mapping (The Wiley-IS&T Series in Imaging Science and Technology) by JÃ¡n MoroviÄ