| http://www.w3.org/ns/prov#value | - For the region other than the excluded regions set by the excluded region setting portions 14R and 14L within each determination region set by the determination region setting portions 12R and 12L, the luminance variance calculating portions 16R and 16L first calculate a luminance histogram that is a frequency variance with respect to luminance value, and then calculate the variance (luminance var
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