Color identification

Grassmann s laws analy chem Seven laws of color Identification and mixing that form the basis of modern analytical colorimetry. gras-monz, l6z grating See diffraction grating. grad-lri ... 

Scheinost, A.C. Schulze, D.G. Schwertmann, U. (1999) Diffuse reflectance spectra of A1 substituted goethite a ligand field approach. Clays Clay Miner. 47 156-164 Scheinost, A.C. Schwertmann, U. (1999) Color identification of iron oxides and hydroxysul-fates Use and limitations. Soil Sci. Soc. Am. 

Expls, color identification by see Color reactions and color reagents 3 C405-C420... 

Today the Munsell system is widely used as a standard for color identification and is so recognized in the fields of science and industry. (See Figure 1.6.)... 

The Commission Internationale de l Eclairage (CIE) standards for color identification use the xy chromaticity diagram (Fig. 10.5 ), with variables x and y defined as ... 

In summary, we believe, based on almost 30 years of experience with the technique of colorant identification using solution spectrophotometry, that it is a satisfactory, simple, and rapid technique for identifying the natural dyes used in early America. As we complete our file of reference material and as we obtain samples of known provenence, we can attempt to compile lists of dye usage as related to time and place in Precolumbian America. 

Saltzman, Max, Keay, A. M., "Colorant Identification, /. Paint Technol,... 

Ternikova and Bonino 7 describe several color identification tests and Levine gives a crystal formation identity test. 

Cyclandelate can be identified amongst many other drugs, poisons and biogenic compounds by gas chromatography (33). Details for this procedure are given in Section 6.4. Several odor and color identification tests are given by Ooorenboos and coworkers (28). 

Manual sorting can be efficiently followed by automated ranking utilizing identification by infrared radiation or visible radiation (to separate colors). Identification software controls robots (robots or air flow) which perform the selective removal of objects according to their nature. 

Colorimetry n (color-identification testing) Light measurements converted to a psychophysical description or notation which can be correlated with visual evaluations of color and color differences. 

Figure 3. A flow chart of the color acquisition procedure. The RGB signals of a white reference and samples were first acquired by a camera sensor. Colors of samples were then acquired and converted from RGB color coordinate to L a b color space for color identification.

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