CCT和duv计算的改进方法

IF 2.6 2区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Leukos Pub Date : 2022-07-20 DOI:10.1080/15502724.2022.2081175

Yue Li, Cheng Gao, M. Melgosa, Changjun Li

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引用次数: 1

摘要

最近，Ohno提出了一种计算光源的相关色温(CCT)及其色度与普朗克轨迹(duv)之间的最短距离(带符号)的方法。在Ohno的方法中，首先选择查找表，然后使用基于三角形解和抛物解的混合方法来预测给定光源的CCT和D uv。在本文中，我们发现样条插值比抛物线解更好地预测CCT和D uv。因此，我们提出了两种新的混合插值方法，分别基于三角形和样条插值或使用两个局部函数值和两个局部二阶导数值的三阶插值。使用查找表的综合测试，相对于当前选择的色温分别增加1%和0.25%，表明所提出的方法优于Ohno的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Improved Methods for Computing CCT and D uv

ABSTRACT Recently, Ohno proposed a method for computing the correlated color temperature (CCT) of a light source and the shortest distance (with sign) between its chromaticity and that of the Planckian locus (D uv). In Ohno’s method, firstly a lookup table is chosen, and then a hybrid method based on the triangular and parabolic solutions is used to predict the CCT and D uv of a given light source. In this article, we found that spline interpolation is better than the parabolic solution for predicting CCT and D uv. Therefore, we propose two new hybrid methods based on the triangular and either spline interpolation or third-order interpolation using two local function values and two local second-order derivative values. Comprehensive tests using the lookup table with both 1% and 0.25% increments relative to the current selected color temperature demonstrate that the proposed methods outperform Ohno’s method.

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来源期刊

Leukos 工程技术-光学

CiteScore

7.60

自引率

5.60%

发文量

审稿时长

>12 weeks

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