By the color patches of medium lightness and chroma of Munsell color system,experiments were made with 34 pairs for lightness and 25 pairs for chroma altering of 5R,5Y,5G,and 5B separately,and then got a serial of new weight functions.
為了對(duì)CIEDE2000色差公式計(jì)算中等色差時(shí)的權(quán)重函數(shù)SL,SC進(jìn)行修正,使計(jì)算結(jié)果與人眼的視覺感覺相一致,選用了孟塞爾(Munsell)顏色系統(tǒng)中的中等明度和中等彩度色塊,在5R、5Y、5G、5B 4個(gè)主色調(diào)的顏色區(qū)域分別改變明度和彩度進(jìn)行計(jì)算,改變彩度時(shí)共有34對(duì)樣品,改變明度時(shí)共有25對(duì)樣品,得到新的修正系數(shù)。
Applying the principle of linear transformation between color systems,correcting measure values relatively to measure reference,the mutual comparison between measure values is improved.
對(duì)在不同的測量儀器上測量同一顏色樣品，測量結(jié)果不同的問題，利用顏色系統(tǒng)之間的線性變換原理及相對(duì)測量基準(zhǔn)對(duì)測量結(jié)果進(jìn)行修正，以提高測量結(jié)果之間的相互比對(duì)性。
In this experiment, CIE 1976 L*a*b*,CMC and CIEDE2000 color difference formulae are checked and compared making use of thecharacteristic of Munsell color system, which its samples nearby are of equal perceived color differenceand the Munsell hue, chroma and value can b.
利用Munsell顏色系統(tǒng)在視覺上為等色差系統(tǒng)以及色調(diào)、彩度和明度可以單獨(dú)改變的特性,用CIE1976L*a*b*色差公式、CMC色差公式和CIEDE2000色差公式分別計(jì)算改變色調(diào)、彩度和明度產(chǎn)生的色差,從而檢驗(yàn)各色差公式的均勻性。