Image display method and apparatus comprising luminance adjustment of a light source

摘要

There is provided a correlation between adjustment of luminance of a LCD (13) and adjustment of luminance of a backlight (14). Luminance average value "lave" is determined from display data. Luminance maximum value "Ilmax" in a macro area is determined from the display data. Luminance is adjusted with reference to luminance-transformed luminance. In luminance transformation, slope average "r1" in a range of 0 ‰¦I<Iave, slope average "r2" in a range of Iave‰¦ 1<I1max, and slope average "r3" in a range of I‰§I1max establish a relationship of r1 ‰§r2>r3 in an area defined by a horizontal axis showing luminance "I" and a vertical axis showing luminance-transformed luminance "I#".