| 摘要 |
PROBLEM TO BE SOLVED: To provide an image adjustment device, etc. which, even when the color temperature of an image displayed on a monitor is changed, ensures that there is less reduction in the number of gradation levels of the displayed image than before.SOLUTION: An image adjustment device 100 comprises: a set color temperature acquisition unit 110 which acquires a set color temperature which was set as a color temperature when a white image is displayed on a monitor; a maximum gradation number derivation unit 130 which derives the maximum gradation number of a reference color when the white image on the monitor is made to be a white image at the set color temperature; and a gradation characteristic setting unit 140 which sets a gradation characteristic about the reference color when the set color temperature is made on the basis of the maximum gradation number of the reference color. When the maximum gradation number of the reference color becomes smaller than the maximum gradation number of the reference color before it was set to the set color temperature, the gradation characteristic setting unit 140, the gradation characteristic is corrected so that the gradation number of an output image signal obtained by converting an input image signal with regard to a region where the gradation number of the input image signal is equal to or less than a predetermined value will become higher. |
