Color management and color matching
Different devices, the technical parameters are different, and the area and color of the color that can be expressed are also different. Therefore, colors created on a device may present different colors on another device. For example, it is a color seen on the display, but if printing it with a printer, the printing color and the display are different. The difference in difference is difficult to avoid, and the only thing we can do is reduced the difference.
In addition, since there is no direct relationship between the color model, some color model color value is to be converted to another color model, and some calculations should be converted or converted with a comparison table. This transformation tends to change color. Different software, when converting the color model, the calculation method is used, and the comparison form employed is different, the same image, in different software, may also present different colors.
In many professional design software, CMS provides color management systems, English abbreviations are CMS (Color Manage System). The role of the color management system is: ● Provides color matching tables between devices, and performs corresponding color adjustment, as far as possible, the color of different devices can be consistent. Including the idea of thinking about the color and printing equipment printed by the display as much as possible. ● Provide conversion between color models and try to make the colors between software can be consistent. Color thousands of color models in the nature of the color model, we must accurately indicate that a color model is used to use. Different applications have different color models, the most common color models with HSB, RGB, CMYK, and CIE Lab color models. Where RGB, CMYK is the only color model that specializes in digital design and publishing print. Cognition these color models will help us accurately grasp the color in your design. 1, CMYK RGB is just a light-colored representation model, in the printing industry, use another color model CMYK. CMYK is a green color (Makenta), Makenta, Yellow, Black, and Black. Each color is represented by a percentage rather than the 256 level of RGB. As the subsequent subtraction mix, in the ideal state, 100% cyan ink plus 100% of the red ink plus 100% yellow ink, which can be made black. However, this ideal state is difficult to achieve, often drawn dark brown instead of black. Therefore, in order to get more pure black, black ink is added. As shown, it is four channels of C, M, Y, and K, respectively. The four channels of the four channels are synthesized together, they become a complete color picture. The color of the CMYK color model is recorded in the computer in the computer, which is the 32-bit true color we often say. Like RGB, you can also directly adjust the values of each channel to achieve accurate colors. CMYK also has a three-dimensional color model similar to RGB. The mixing color of the RGB color model belongs to the addition mix. The higher the value of each primary color, the brighter the color. R, g, b are black, and it is 255 when it is 255. RGB is the most direct color representation method in computer design. The 24-bit true color image in the computer is to use the RGB model to accurately record color. So, use RGB values in your computer to accurately get some color. Although RGB is expressed directly, the R, G, B value, and the three attributes of the color have no direct contact, and the relationship between the colors cannot be revealed. Therefore, when the color design is designed, the RGB model is not so suitable in all art software, and the value of the RGB can be set directly. Some software also provide an intuitive "RGB 3D color model" to set RGB color values. RGB 3D Color Model 3, LAB model This color model is not known for many people. At that time, the purpose of studying the LAB color model was to develop a color standard-independent color standard. The color theory of Lab is based on the feeling of color. LAB color theory believes that in an object, two primary colors of red and green cannot coexist, yellow and blue are not simultaneously coexist. The Lab color model represents the color of the three sets of values: L: Lightness brightness value, from 0 to 100.
