This paper presents experimental approaches for evaluating concert lighting from the viewpoints of audience members and performers in Cambridge King's College Chapel. We develop image zoning and abstraction techniques to quantify and interpret photometric data acquired under four different electric lighting conditions. Assessed by 78 participants, these lighting scenarios are compared across six different viewing positions using a set of structured questionnaires. Ordered logistic regression modelling shows that the ratios and functions describing uniformity, brightness and light patterns are common explanatory variables for predicting perceived visual clarity, visual uniformity, brightness and spatial intimacy. Uniformity-related attributes are observed to be among the strongest variables for all these perceived qualities, except for visual clarity, which is better explained by acuity-related measures. These experimental results confirm the applicability of our approaches, highlighting the importance of combining multiple methods and integrating complex architectural situations into the process of understanding luminous appearance.

中文翻译：

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评估空间亮度模式对音乐会灯光感知质量影响的方法

本文从剑桥国王学院教堂的观众和表演者的角度介绍了评估音乐会灯光的实验方法。我们开发了图像分区和抽象技术来量化和解释在四种不同电照明条件下获得的光度数据。由 78 名参与者评估，这些照明场景使用一组结构化问卷在六个不同的观看位置进行比较。有序逻辑回归模型表明，描述均匀性、亮度和光模式的比率和函数是预测感知视觉清晰度、视觉均匀性、亮度和空间亲密度的常见解释变量。观察到与均匀性相关的属性是所有这些感知质量的最强变量之一，除了视觉清晰度，这可以通过与敏锐度相关的测量来更好地解释。这些实验结果证实了我们方法的适用性，强调了结合多种方法并将复杂的建筑情况整合到理解发光外观的过程中的重要性。