Brightness color space

Color in the HSI color space is represented as three components hue, saturation, and intensity (Gonzalez and Woods 1992 Jain et al. 1995 Smith 1978). Any point in the RGB color space can also be specified using the HSI color model. The attribute hue defines the color of the point. Saturation specifies the amount of white added to the pure color. Finally, intensity specifies the brightness of the point. It is not clear if the HSI components are defined for linear RGB or nonlinear RGB space (Poynton 1997, 1998). Therefore, it is not possible to determine whether the components of the HSI color space refer to a physical... 

As the shaman spoke, Valdes (who had only experienced a few brief visions which he hadn t described) saw a black sky with brightly colored objects floating in it. He suddenly found himself speeding toward one and actually felt he was accelerating through space past the rest. The light turned out to be a Mazatec village similar to that of the curandero. 

The HSV (Hue, Saturation, Value) model, also known as HSB (Hue, Saturation, Brightness), defines a color space in terms of three constituent components ... 

A common way of color analysis is available by the use of the HS V color space. For this, a color is given by the hue (H), the saturation (S), and the value of the brightness (V). The hue value can be interpreted as an angle in the HSV color space. The corresponding colors vary from red through yellow, green, cyan, blue, magenta, and back to red. The RGB information can be converted into hue with a certain formula in such a way that the color information is available in the form of a scalar ... 

For a color space to have maximum usefulness, all steps of just distinguishable differences, whether of brightness, hue, or purity, should be... 

The Munsell color system is conceptually similar to the QELAB system, but with some significant differences. The Munsell system was conceived by the American painter Albert H. MunseU in 1905 with subsequent revisions and variations. The three variables used to describe colors in the system are hue, brightness (similar to lightness in QELAB), and saturation (similar to chroma also called value). As shown in Figure 11.14, the color space is cylindrical. The hue is divided into 100 equal spaces around the circle that forms the cross section of the cylinder, while the y direction is the brightness, scaled from 0 to 18. The x-axis is the saturation, scaled from 10 to 18. Munsell charts and collections are used in the forensic analysis of paints and soils. Because books and samples of color are used for color comparison, the Munsell color space is sometimes referred to as a catalog system. An example application is in soil analysis in which soil particles can be seived, sorted, and grouped by their Munsell color. 

Color measurement is a collection of optical measurements. The basic measurement is color itself and is presented to the user in a color coordinate system. A common color coordinate system is for example CIELAB, where the parameters a and b define the color space and L defines the brightness. 

AH initiation devices manufactured in North America are imprinted with a safety warning EXPLOSIVE-EXPLOSIF-DANGER-DETONATEUR-BLASTING CAP. Initiating devices typically are made of brightly colored plastic materials or wire insulation that may make them especially appeahng to children. In addition, initiation devices are quite small and can easily be concealed in a pocket or other small space. For these reasons it is particularly important to carefully maintain an accurate inventory of all initiation devices and to store them in appropriate, locked magazines separate from other explosives. 

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