顯示器與印表機色彩精確校正程序之研究(II)

In the second year of this 2-year project, we will focus on developing a simple but effective linking model to manage the color accuracy between different color media, for example color monitor and color printer. It is all based on our accumulated knowledge about optical color measurement technology, color evaluation methods, spectrum analysis, light source spectrum modulation, data analysis, and modelling skills. Our goal is to find some effective and practical solution for color management between different color media such as to obtain high precision and high accuracy in color reproduction. Conventionally, the color mixing on three or multiple primary colors usually leads to serious color shifts on displays and printers. Although the unneglectable color shifts exist, the color appearance can be recovered by the further calibrations such as the Gamma curve correction and/or the look-up table correction. However, as the 4K or even 8K high resolution technologies and the virtual/augmentation/mixed reality applications coming, both the large color differences by the Gamma correctionand the huge data set for the look-up table correction become impractical in the real applications. During the past few years, we had already found some essential reasons which lead to the obvious color shifts from the color mixing of original primary colors. We also found that the color shifts can easily be eliminated by simply considering some additional embedded secondary colors. Accordingly, the disadvantages of the large color differences from Gamma correction and the huge data set in look-up table correction are also overcome automatically. We would like to further link these true color characteristics of monitors and printers to develop a simple but accurate mapping. In such a way, the colors presenting on the color monitors will be of highly precise and accurate chromatic behaviors as the same as those on the color printers. In addition to accurately reproducing colors in color media, it would be also extended to some highly requesting applications such as the implement of the digital color checkers, true colors through world-wide webs, etc.