| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide such an image display device being able to display gradation in which discontinuity in high luminance gradation range is avoided and difference in sense of luminance change at equal interval from an intermediate gradation range to the maximum value of the gradation. <P>SOLUTION: A gradation/emission luminance converter 104 converts gradation of an input image into data corresponding to luminance to be displayed by a video light emitter 107 using predetermined conversion characteristics. In an intermediate gradation range, the common logarithms of the luminance to be displayed by the video light emitter 107 have a proportional relation to the gradation. In high luminance and gradation range, the relation gradually deviates from the proportional relation, the near the gradation approaches the maximum value thereof, the larger the variation quantity of the common logarithm value to be assigned to an increment of the gradations become. <P>COPYRIGHT: (C)2011,JPO&INPIT |
