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DEVELOPMENT OF THE NEW CALCULATION METHOD OF COLOUR RENDERING PROPERTIES TAKING ACCOUNT OF ILLUMINANCE

机译:照明陈述的彩色渲染特性新计算方法的开发

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Museum lighting is carefully controlled not to give any damage against deterioration of artworks. In case of the exhibition of Japanese paintings for example, the illuminance is strictly regulated to constrain at low, less than 50 lx in case of the most severe circumstance not to give colour fade damage as less as possible. However, for appreciation of artworks at museum, low illuminance means the decrease of colour appearance of artworks because artworks will lose brightness and colourfulness at low illuminance. The purpose of this study is to develop the new calculation method to evaluate the colour rendering values taking illuminance into consideration based on the subjective experiments. We carried out the subjective experiments to examine the colour appearance of the test samples under various illuminance and light sources. The results showed that subjective colour feelings were influenced by illuminance as well as the spectral power distributions of light sources, and also subjective impression was depended on hue of colour samples, especially red. Factor amalysis also revealed that subjective impression could be evaluated by "colour quality" such as vividness and brightnesss. We defined "the colour quality index" called Gx and Rxi to evaluate the new colour rendering properties representing illuminance-effects and hue-effects. It was confirmed that the new index Gx and Rxi correlated practically subjective results.
机译:博物馆照明经过精心控制,不要对艺术品恶化的任何损害。例如,在日本绘画展的情况下,在最严重的情况下,照度严格调节以在低,小于50 Lx的情况下限制,而不是使颜色褪色损坏尽可能少。然而,为了欣赏博物馆的艺术品,低照度意味着艺术品的颜色外观减少,因为艺术品将在低照度下失去亮度和粘性。本研究的目的是开发新的计算方法,以评估基于主观实验考虑照度的颜色渲染值。我们进行了主观实验,以检查各种照度和光源下测试样品的颜色外观。结果表明,主观颜色感受受照度的影响以及光源的光谱功率分布,以及对颜色样品的色调,特别是红色的主观印象。因子分析也揭示了主观印象可以通过“颜色质量”(例如鲜艳度和亮度)来评估。我们定义了名为GX和RXI的“颜色质量索引”,以评估表示照度效果和色调效果的新颜色呈现属性。确认新指数GX和RXI实际上是主观的结果。

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