Computer color matching

This theory is especially useful for computer color matching of pigmented systems [1.22]-[1.24] absorption and scattering coefficients are combined additively using the specific coefficients of the components multiplied by their concentrations. 

Problems concerning the acceptance (tolerance) of color differences (e.g., in production quality control or in computer color matching) should also be solved by mathematical statistics [1.16]. 

Experienced color matchers can achieve a good color match by trial and error without using any instrumentation. In some cases, however, this technique can be a lengthy process, and should the desired match be outside the color space defined by the available color standards, the technician might spend too much time just to determine that the match is not possible. To get the most cost-effective match using a low metamerism in the shortest possible time, the use of a computer color matching system is preferable. 

Working out formulations for new shades, supported by colorimetry and computer color matching. 

Using many-flux technology, computer color-matching systems can automatically formulate with or without white, at all levels of opacity, from a single database. In addition, satellite systems can offer added value by providing the same high-quality formulation results as a full system, with a low cost and feature limited satellite system. 

The database is an integral part of a computer color-matching system. It is the characterization of all pigments and resins from which formulas will be calculated. Creating a database involves producing samples of pigments, resins, and known mixtures of each. Once database samples are measured and saved to the database, the database is calibrated. 

The age of computer technology is here. The software packages currently available for computer color matching have tremendously improved over the past few years and will continue to improve dramatically as current human and computer research continues to search for those color recognition patterns that more closely mimic the human eye and brain processes. So far, the eye still has the lead, but for how much longer ... 

K showcase See shows and conferences. Kubelka-Munk theory See computer color matching, Kubelka-Munk theory. 

The latter is referred to as the single constant K-M equation compared to the third one using separate iTs and S s, which is called the two-constant equation. The above equations are those most widely used for computer color matching. McDonald R (1997) Colour physics for industry, 2nd edn. Society of Dyers and Colourists, West Yorkshire, England. Paint/coatings dictionary. Federation of Societies for Coatings Technology, Philadelphia, Blue Bell, PA, 1978. 

The equation was popularized by Saunderson in his work on computer color matching but actually dates back many years, at least to Walsh in the 1920s.) Moller KD (2003) Optics. Springer-Verlag, New York. 

The ready availabiUty of computers has led to the detailed analysis of the colorant formulation problems faced every day by the textile, coatings, ceramics, polymer, and related industries. The resulting computer match prediction has produced improved color matching and reductions in the amounts of colorants required to achieve a specific result with accompanying reductions of cost. Detailed treatments have been given for dyes and for pigments (13,29,30). 

Computer-aided programs, for SLS equipment selection, 11 348 Computer analysis, of DNA sequence information, 12 510-512 piping system sizing using, 19 473-474 Computer-assisted color matching,... 

Tristimulus values X, Y, and Z are computed for a primary light source with power spectrum L(X) from the color-matching functions x, y, and z as follows ... 

Today, the speed of the Pentium processors has allowed for much more complicated algorithms written on the Windows platform, such as computing many-flux calculations and spectral matching routines. New color-matching technology provides sophisticated and intuitive color formulation that is easily learned and used by the expert as well as the novice color matcher. 

The character of AR/TS is changing. Materials, equipment and applications are all increasingly sophisticated. There is more need for expert personnel, yet flexibility and breadth of outlook are required to cope with new situations. How does one predict the weatherability of plastics when twenty years service is the objective The organizers of a 1967 symposium on the subject felt obliged to conclude that after a century the problem is still far from a satisfactory solution (9). How does one predict with reliability the hazard to a large population of a new food additive or soap bacteriostat over a long period of time How does one deal with subjective properties of chemicals such as taste and flavor The synthetic sweeteners in use today have all been discovered accidentally is this the way to run a chemical business How are reluctant old timers weaned from visual color matching to computers ... 

Tristimulus computation data n. Products of relative spectral-energy distribution of an illuminant multiplied by each of the three color matching functions in the CIE system designated as EcY, EcT e.g., for Illuminant C and the color mixture data for the standard observer at designated wavelengths. 

See tristimulus computation data, tristimulus value, and color matching functions. 

See tristimulus computation data, tristimulus values, and color matching functions. McDonald R (ed) (1997) Colour physics for industry, 2nd edn. Society of Dyers and Colourists, West Yorkshire, England. 

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