漢風色典濃度在知覺色空間之關係研究

A Study on the Relationship between the Depth of Shade of Sino Color Book and Perceptual Color Space

從“漢風色典－－純聚酯絲梭織布色票＂之色相表中，系統性選出可以涵蓋此色票集（color atlas）之代表性色票一千多色，以ColorEye XTH 分光儀取得CIE 1976 LAB 值。首先對標準灰（Sino standard gray）的色濃度與CIE LAB 關係進行回歸分析，並與Munsell明度（value）、DIN 含黑量（darkness）作比較，發現“漢風色典＂的標準灰色濃度，若將其色濃度歸一到10 階（即最小為0，最大為10）則其回歸曲線與Munsell 的明度十分接近。至於漢風色典的六個主色相的色濃度與L*的關係也呈線性關係，其中除了H0（黃色）的最暗色濃度隨彩度不同而有不同的截距外，其關係都為線性關係，且與標準灰相接近。其次，進行了解單一漢風色彩屬性與另兩個不同屬性轉換為知覺色空間的交互現象，以測色值繪出CIE LAB a*b*、L*h°、L*C*圖加以分析，結果發現此色典的濃度操作在淺色、中色濃度、（light and medium depth）低彩度及向度210（H210）之色票，有良好的視覺均勻性排列，其他部分可能因染料的染色行為而產生特有的規則變化。總之，就初步研究結果言，“漢風色典＂可視為色料混色（colorant mixture）的濃度概念融合視覺等步的色貌（color appearance）之系統，其中多少具有色彩秩序系統（color-order system）的特性；另一方面，也提出對“漢風色典＂色濃度的一些理論有待檢證之建議，以及今後試圖建立漢風色典與CIE 色系等等對應關係，以增加其應用廣度之研究方向。

From the hue tables of Sino Color Book－Pure Polyester Filament Woven Fabric Chips, one can systematically choose more than 1,000 colors of the representative color chips that cover this color atlas. With Color Eye XTH spectrophotometer, CIE 1976 L*a*b*c*h° value can be derived. First, the relationship between the color depth of Sino standard gray and CIE LAB was obtained through retrogressive analysis and a comparison with Munsell value and DIN darkness was made. It was discovered that if the color depth of Sino standard gray of Sino Color Book was reduced to a scale from one to ten (with zero as the minimum and ten as the maximum),then the regressive curve was very close to Munsell value. As for the relationship between the color depth of the six main colors of Sino Color Book and L* also presented a linear relationship. Aside from the darkest depth of shade of HO yellow),which varied with chroma and presentsd different intercepts, the relationship was all linear and was close to Sino standard gray. Next, this study proceeded to understand the reciprocal phenomena between the single Sino color attribute and two different attributes converted into a perceptual space. A map of CIE LAB a*b*, L*h°，L*c* was drawn for analysis. The result showed that the color tickets had good visual even arrangement when the operation of depth of the Sino Color Book ranged between light and medium depth of shade, low chroma, and hue angle at 210(H2l0)﹒ The remainder produced characteristic regular change, which might resulted from dying behavior of the dye. To sum up, based on the results of the preliminary study, Sino Color Book may be viewed as a system combining the color depth concepts of colorant mixture and visual uniform color appearance. It may possess the characteristic of the color-order system. On the other hand, some theoretical suggestions related to Sino depth of shade of the Sino Color Book are made, which may wait for vaidation. Attempts to build up the equivalent relationship between Sino Color Book and CIE color system should be tried so as to enhance its scope of application and direction for further study.