In the actual printing and image processing, it often happens that the colors that look beautiful on the screen are dark and turbid after printing, or they are eclipsed, which is different from what you see on the screen; one image is colored The color of the printer is satisfactory when printing, and the color is dark when printing, or the same data cannot be obtained on different devices.
The reason why these problems occur is that the various devices and materials used in printing have different expressions of colors, and the colors reproduced vary widely, resulting in inconsistencies in color reproduction. The solution to this problem of color inconsistency is color management. The so-called color management refers to the use of a combination of software and hardware to automatically and uniformly manage and adjust colors in the production system to ensure color consistency throughout the process.
The main objectives of color management are: to achieve color matching between different input devices, including various scanners, digital cameras, Photo CD, etc.; to achieve color matching between different output devices, including color printers, digital proofers, digital printing machines, Conventional printers, etc. achieve the consistency of the display colors of different displays, and enable the display to accurately predict the output color of the finished product; finally achieve high-quality color matching from scanning to output.
The purpose of color management is to make the image color as consistent as possible between different color devices. However, for color image reproduction equipment, due to different structures and mechanisms for expressing colors and different media used to reproduce colors, the color reproduction method (color space) adopted is also different. The range of colors presented is also different, that is, they exhibit different color gamuts. Therefore, for color management, we must first clarify the color space and color gamut range used by each color reproduction device for color reproduction, and secondly, use the appropriate color conversion method to convert the color space of one device to the color space of another device. , And make the color effect of the two devices consistent.
