Printing Basic Knowledge: ink and color (c)
(D) Munsell (Color) system (MunsellSystem) From visual psychology to describe the color hue (Hue) (Note: Hue hue or color can be translated word for word. In the ink manufacturing Hue and Shade are synonyms. However, in some color systems, Shade is refers to the addition of a color different amounts of black or complement the color of color and form steps (ie the formation of a variety of different levels of color depth) of the case.) Ming (bright) degrees (Lightness) and saturation (Saturation) of pioneers, the artists Munsell (AlbertH.Munsell), in 1905 he made note of this situation.
Munsell color system is that the surface of the color-color three-dimensional model of a method. It uses a three-dimensional space, similar to the sphere of the model, according to the spatial arrangement of color vision, etc., to all kinds of surface color of the three basic parameters?? Hue, lightness and saturation space coordinates through all that out. In the three-dimensional model representative of each of the various parts of a particular color, and to a certain label on. The current international system has been widely used Munsell color as the surface color classification and calibration methods.
Munsell color system, three-dimensional diagram for the color (ColorSolid) plan. The level of its surface profile shall be such as lightness, and color three-dimensional cross lines hue ring. Hue Central vertical axis through the center of three-dimensional color called gray axis (also called non-color axis, lightness axis). Any point such as surface brightness to gray axis of the radial distance that the degree of saturation. Radial distance equal to the same degree of saturation.
In the Munsell system, including a hue ring (that is, the level of color stereo profile), and make it representative of attainment of 10 Munsell hue, including the five basic hue, such as red (R), yellow (Y), green (G), blue (B), purple (P), and the five intermediate hues such as yellow – red (YR), green – yellow (GY), blue – green (BG), purple – Blue (PB), red – purple (RP). In order to make a more detailed delineation of hue, each hue is divided into 10 decile, from 1 to 10, so the hue ring is divided into 100 decile. In the "Munsell Color Atlas", then on each of the four hue hue are given 2.6,5,7.5,10 level (that is not printed in 10 decile).
Munsell color three-dimensional profile that the brightness level equal to the arrangement of colors, which means that the surface brightness of all colors are equal, only hue and saturation on different.
In Hue is a gray ring of the central axis (ie, Munsell color solid central axis – it represents no color white black series neutral color brightness level), Munsell said the brightness coefficient of this root axis area known as the "value" (Value)?? that Mengsaierming degree value. He's the ideal brightness factor is equal to 102 as of 10 white; while the intensity factor is equal to 0, the ideal black as 0. This Mengsaierming scale value divided into the 0-10 on a total of 11 equidistant in the sense of hierarchy, each level of brightness value corresponds to the color samples in the sunlight a certain brightness factor. It can be seen only in the practical application of lightness value 1? 9.
Extended from the gray axis, the radius increases with the color saturation increases, the horizontal distance from the central axis representative of saturation changes in the Munsell system, known as the Munsell chroma ( Chroma). Saturation that has the same lightness value of colors from neutral gray level. Saturation is also divided into equal number of visual hierarchy, gray axis (central axis) of the saturation to 0, leaving the more distant gray axis, then the greater the saturation value, it is in the most saturated solid circle on. Greatest variety of color saturation is not the same. Individual the most saturated color saturation can reach 20.
As blue and green not yellow, and red has a higher saturation, so there can be no higher saturation, so this system is not closed symmetrical arrangement, but the asymmetrical-shaped openings. Its hue is the same, only different brightness and saturation.
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