A Grid in Perspective for Road Lighting Calculations

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

Leukos Pub Date : 2022-12-15 DOI:10.1080/15502724.2022.2135529

F. Greffier, V. Boucher, V. Muzet, Sandy Buschmann, S. Völker

引用次数: 1

Abstract

ABSTRACT In road lighting, calculations are made within the rectangular CIE grid while measurements conducted with Imaging Luminance Measurement Devices (ILMD) have a trapezoidal shape. We propose to build a grid that takes the observer’s perspective into account by projecting ellipses of adjustable dimensions than can match human vision or ILMD angular aperture and allow direct comparison with luminance images. Lighting standard criteria definitions remain unchanged and values of average luminance and longitudinal uniformity are equivalent. However, as the grid in perspective describes more finely the luminance distribution, the overall uniformity is lower than in the classical grid but more representative of observer’s perception. We present in detail our approach, give the corresponding code, expose calculations performed with this new grid and show an example of direct comparison between calculations and measurements.

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道路照明计算的透视网格

在道路照明中，计算是在矩形CIE网格内进行的，而使用成像亮度测量设备(ILMD)进行的测量具有梯形形状。我们建议建立一个网格，通过投影可调节尺寸的椭圆来考虑观察者的视角，这些椭圆可以匹配人类视觉或ILMD角孔径，并允许直接与亮度图像进行比较。照明标准的定义保持不变，平均亮度和纵向均匀度的值是相等的。然而，由于透视网格更精细地描述了亮度分布，因此整体均匀性低于经典网格，但更能代表观察者的感知。我们详细介绍了我们的方法，给出了相应的代码，展示了用这个新网格执行的计算，并展示了计算和测量之间直接比较的示例。

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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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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