色彩校正主要的目的是在修正影像光學系統所產生的訊號,使它能夠接近人眼的視覺反應。不同的光學系統在修正處理上,內容大同小異,唯獨在色彩修正上差異頗鉅。此乃是因為不同的光學系統,在處理的方式便有極大的差異,吾人必需針對使用的光學系統,利用合適的演算法及轉換參數,經訊號分離,內差等方法計算出一個像素真正代表的亮度及彩色訊號。 個人電腦的桌上彩色應用系統,目前已日漸普及。我們會發現由於各種彩色系統有不同的頻譜響應,同一組R、G、B值在不同的裝置上的表現,可能有相當的差異,因此利用色彩修正技術來達到影像色彩輸出的一致性,己已經成為提高影像品質必要的程序。本論文主要的目的乃在解決彩色掃描器的色彩失真的問題,使其經過校正後的色彩輸出上呈現原始影像最真實的色彩。
The major purpose of color calibration is to modify the signal generated from optics image system such that it may approach the visual response of human eyes. The adjustments on most parts for different optics systems are almost the same, except color calibrations which may vary quite large. Due to different processing ways for varying optics systems, we need to figure out suitable algorithm and translating arguments, then calculate the real bright and color signal for pixel through signal abstraction, interpolation,etc. The desktop color application system of personal computer becomes more and more popular. Due to varying waveform responses for different color systems , we will find out that the outputs may have big differences for display the same R、G、B value on different devices. Therefore, it has become a critical procedure for promoting image's qulity that using color adjusting technology to achieve the coincidence of image color output. In this thesis, we will deal with the above mentioned problem for color scanner, and try to display the original real colors after making proper adjustments.