| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
We see shadows everywhere. Shadows are the visual response to an absence of light, in other words, all shadows are intangible. We usually don’t pay attention to shadows, but we sometime can aware that a space is brightly illuminated by seeing dark shadows. It is not revealed how shadow affects our brightness perception of a space. In this research, we tested whether the perception of shadow affects the perception of brightness of a space. Using multidimensional scaling we analyzed the dissimilarity structure produced by different intensity of illuminances and shadows. Experimental results showed that the apparent brightness of the space was proportional to the intensity of illuminance and to the shades of shadow. It indicates that our visual system uses information of shades of shadow to estimate the apparent brightness of the space.
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