CIE 1994(ΔL~*ΔC_(ab)~*ΔH_(ab)~*)色空间均匀性的实验验证

The Test of Verifying Uniformity of CIE 1994 (Δ L Δ C  ab Δ H  ab ) Color Space

介绍了在马海毛白度试验方法及白度评阶研究基础上对ＣＩＥ１９９４（ΔＬ＊ΔＣ＊ａｂΔＨ＊ａｂ）色空间均匀性验证的结果．在基本满足ＣＩＥ正式推荐的工业色差评价所规定的条件下，比较马海毛目视评价和仪器测量的结果，表明ＣＩＥ１９８２白度公式不适用马海毛白度评价．色差型亨特白度公式应用于马海毛白度评价使仪器测量和目视评价的相关系数最大，试样间亨特白度差ΔＷｈ及色差ΔＥ＊９４的相关系数达０．９５２８２，证明了马海毛白度的亨特公式计算值有很好的视觉均匀性，验证了ＣＩＥ１９９４（ΔＬ＊ΔＣ＊ａｂΔＨ＊ａｂ）色空间对ＣＩＥＬＡＢ色空间均匀性的改进是成功的，支持了作者推荐的应用亨特白度公式。

In this paper, the main results of verifying CIE TC 1 29 industrial color difference evaluation are introduced through research of mohair whiteness evaluation on the basis of experimental methods for mohair whiteness under basis conditons defined CIE TC 1 29. Visual evaluation and instrumental measure show that CIE 1982 whiteness formula does adapt for use in mohair whiteness evaluation, using Hunter whiteness formula which is color difference model makes related coefficient of visual evaluation and instrumental measure maximum. Calculation Hunter whiteness differences Δ W h and color differences Δ E  94 between the samples show that related coefficient of Δ W h and Δ E  94 reaches 0.95282. So, calculated values of Hunter whiteness formula of mohair have the better uniform visual character. It was verified that CIE 1994 (Δ L Δ C  ab Δ H  ab ) had improved uniform visual character of CIE LAB color space successfully. Besides, it was supported that writer recommends Hunter whiteness formula W h=100-[(100- L ) 2+ a 2+b 2] 12 for use in mohair whiteness evaluation.