The XYZ color space is an international standard developed by the CIE (Commission Internationale de l'Eclairage). This model is based on three hypothetical primaries, XYZ, and all visible colors can be represented by using only positive values of X, Y, and Z.
It is pretty standard that 3d axis, XYZ, is represented as red green blue, respectively.
The CIE XYZ color space encompasses all color sensations that are visible to a person with average eyesight. That is why CIE XYZ (Tristimulus values) is a device-invariant representation of color. It serves as a standard reference against which many other color spaces are defined.
The CIE color model is a color space model created by the International Commission on Illumination known as the Commission Internationale de l'Elcairage (CIE). It is also known as the CIE XYZ color space or the CIE 1931 XYZ color space.
The CIE XYZ colour model is a 'device-independent' or 'fixed' colour space, whereas RGB, which varies with every individual device (monitor, scanner, camera, etc.), having its own version of RGB.
The x-axis and y-axis represent the first two dimensions; the z-axis, the third dimension. In a graphic image, the x and y denote width and height; the z denotes depth.
XYZ = rgb2xyz( RGB ) converts the red, green, and blue values of an sRGB image to CIE 1931 XYZ values (2° observer). XYZ = rgb2xyz( RGB , Name,Value ) specifies additional conversion options, such as the color space of the RGB image, using one or more name-value arguments.
RGB and XYZ are, at one level, just different coordinate systems covering the same color space—the space of all colors visible to typical human vision. In a mathematical sense, when used as coordinates, there's nothing wrong with negative RGB values (as long as the overall luminance of the color remains positive).
As we mentioned before, in the XYZ color space, Y represents the color's brightness. In the xyY color space, the xy values can be seen as a representation of the color's chromaticity while the Y values can be seen as a representation of the color's intensity or brightness value.
In the CIE XYZ color space, the tristimulus values are not the S, M, and L responses of the human eye, but rather a set of tristimulus values called X, Y, and Z, which are roughly red, green and blue, respectively (note that the X,Y,Z values are not physically observed red, green, blue colors.
By normalizing XYZ (i.e. dividing by X + Y + Z ) derived values are obtained referred to as x,y,z . In that x + y + z = 1, the chromaucity of a color can be specified by two parameters x y, of the three normalized values.
Your choice of color space really depends on the end-use of the image. If you want to share your image on social media, on a blog, or website, then sRGB is the best choice. If the photo is to be printed, then Adobe RGB is the preferred choice.
The RGB Color Space
RGB is the most common color model used today. Every television or computer monitor uses the RGB color model to display images.
Three Primary Colors (Ps): Red, Yellow, Blue. Three Secondary Colors (S'): Orange, Green, Violet. Six Tertiary Colors (Ts): Red-Orange, Yellow-Orange, Yellow-Green, Blue-Green, Blue-Violet, Red-Violet, which are formed by mixing a primary with a secondary.
Color variants — or color changes — is when you manipulate an image (or part of an image) to make it a different color. There are lots of reasons you might want to change colors in an image.
Typically, biologically male individuals have one X and one Y chromosome (XY) while those who are biologically female have two X chromosomes.
Boys typically have one X chromosome and one Y chromosome, or XY, but boys with XYY syndrome have an extra Y chromosome, or XYY. XYY syndrome is not caused by anything the parents did or did not do. The disorder is a random error in cell division.
Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a "female" chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.
The lighting possibilities with A-RGB are much more advanced than those of RGB. For example, different LEDs of an array (e.g. fans or LED strips) can light up simultaneously in different colours and in this way also create patterns or various stylish effects, such as rainbows and colour flashes.
The difference between YCbCr and RGB is that RGB represents colors as combinations of red, green and blue signals, while YCbCr represents colors as combinations of a brightness signal and two chroma signals.
There is no informational difference between RGB and HEX colors; they are simply different ways of communicating the same thing – a red, green, and blue color value. HEX, along with its sister RGB, is one of the color languages used in coding, such as CSS. HEX is a numeric character based reference of RGB numbers.
It use a color coordinate system with three primary colors: R(red), G(green), B(blue) Each primary color can take an intensity value ranging from 0(lowest) to 1(highest). Mixing these three primary colors at different intensity levels produces a variety of colors.
Get the 2 left digits of the hex color code and convert to decimal value to get the red color level. Get the 2 middle digits of the hex color code and convert to decimal value to get the green color level. Get the 2 right digits of the hex color code and convert to decimal value to get the blue color level.
Thus, the formula for ( x - y - z ) 3 is. x 3 - y 3 - z 3 - 3 x 2 y + 3 xy 2 - 3 y 2 z - 3 yz 2 + 3 xz 2 - 3 x 2 z + 6 xyz.
Cartesian coordinate system - Wikipedia.