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Today, the importance of the landscape lighting of urban nightscapes is increasing with the urban lifestyle for a 24-hour-life. In this study, we tried to quantitatively evaluate the color rendering effect for landscape lighting using visual engineering and psychophysical measurement methods. We selected six kinds of typical urban landscape lighting as samples. We took photographs of these nightscape...
Colors used in VDT are sometimes inappropriate for the person with symptoms of cataract. This is partly because RGB (HSV) color system is adopted in computer graphics, while industrial standards are commonly enacted by CIE color system. We conducted the experiment to evaluate the effect of cataract on the sensitivity of color vision by photochromatic threshold method and brightness matching method...
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