Color models - Tristimulus color space as a mathematical projection

A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components. When this model is associated with a precise description of how the components are to be interpreted (viewing conditions, etc.), the resulting set of colors is called a color space. This section describes ways in which human color vision can be modeled. Color models - Tristimulus color space. The human tristimulus color space. < ...

Including:

• Color models - Tristimulus color space
• Color models - Tristimulus color space as a mathematical projection
• Color models - CIE XYZ color space
• Color models - RGB color space
• Color models - CMYK color model
• Color models - HLS color space
• Color models - HSV color space
• Color models - Color systems

Read more here: » Color models: Encyclopedia - Color models

Continuing with our mathematical description of light using the wave equation, a good model for the way our receptors work can be explained in terms of Hilbert spaces and orthogonal projections. Indeed, as mentioned previously, the light going through point (x,y,z) in space is a signal. It is useful to think of this signal as some function in L2, the space of square-integrable functions. This space is a (infinite dimension ...

See also:

Color models, Color models - Tristimulus color space, Color models - Tristimulus color space as a mathematical projection, Color models - CIE XYZ color space, Color models - RGB color space, Color models - CMYK color model, Color models - HLS color space, Color models - HSV color space, Color models - Color systems

Read more here: » Color models: Encyclopedia II - Color models - Tristimulus color space as a mathematical projection

Main article: CIE 1931 color space One of the first mathematically defined color spaces is the CIE XYZ color space (also known as CIE 1931 color space), created by the International Commission on Illumination in 1931. These data were measured for human observers and a 2-degree field of view. In 1964, supplemental data for a 10-degree field of view were published. It must be noted that the tabulated sensitivity curves have a certain amount of arbitrariness in them. The shapes of the individual X, Y and Z sensitivity curves can b ...

See also:

Color models, Color models - Tristimulus color space, Color models - Tristimulus color space as a mathematical projection, Color models - CIE XYZ color space, Color models - RGB color space, Color models - CMYK color model, Color models - HLS color space, Color models - HSV color space, Color models - Color systems

Read more here: » Color models: Encyclopedia II - Color models - CIE XYZ color space

The human tristimulus color space. One can picture this space as a region in three-dimensional Euclidean space if one identifies the x, y, and z axes with the stimuli for the long-wavelength (L), medium-wavelength (M), and short-wavelength (S) receptors. The origin, (S,M,L) = (0,0,0), corresponds to black. White has no definite position in this diagram; rather it is defined according to the color temperature or white balance as desired or as available from ambient ...

See also:

Color models, Color models - Tristimulus color space, Color models - Tristimulus color space as a mathematical projection, Color models - CIE XYZ color space, Color models - RGB color space, Color models - CMYK color model, Color models - HLS color space, Color models - HSV color space, Color models - Color systems

Read more here: » Color models: Encyclopedia II - Color models - Tristimulus color space

It is possible to achieve a large range of colors seen by humans by combining cyan, magenta, and yellow transparent dyes/inks on a white substrate. These are the subtractive primary colors. Often a fourth black is added to improve reproduction of some dark colors. This is called "CMY" or "CMYK" color space. The cyan ink will reflect all but the red light, the yellow ink will reflect all but the blue light and the magenta ink will reflect all but the green light. This is because cyan light is an equal mixture of green and blue, yellow is an equal mixture of red and green, and m ...

See also:

Color models, Color models - Tristimulus color space, Color models - Tristimulus color space as a mathematical projection, Color models - CIE XYZ color space, Color models - RGB color space, Color models - CMYK color model, Color models - HLS color space, Color models - HSV color space, Color models - Color systems

Read more here: » Color models: Encyclopedia II - Color models - CMYK color model

Media that transmit light (such as television) use additive color mixing with primary colors of red, green, and blue, each of which stimulates one of the three types of the eye's color receptors with as little stimulation as possible of the other two. This is called "RGB" color space—see also RGB color model. Mixtures of light of these primary colors cover a large part of the human color space and thus produce a large part of human color experiences. This is why color television sets or color computer monitors need only produce mixtures o ...

See also:

Color models, Color models - Tristimulus color space, Color models - Tristimulus color space as a mathematical projection, Color models - CIE XYZ color space, Color models - RGB color space, Color models - CMYK color model, Color models - HLS color space, Color models - HSV color space, Color models - Color systems

Read more here: » Color models: Encyclopedia II - Color models - RGB color space