Patent ID: 9654754
Date: 2017-05-16
CPC Classifications: G09G,H04N

Claim:
1. An image adjusting apparatus comprising: a set color temperature obtaining unit that obtains a set color temperature, wherein the set color temperature is set as a color temperature when a white image is displayed in an image display apparatus which displays an image; a maximum tone value calculator that calculates a maximum tone value of a reference color to be obtained when the displayed white image displayed in the image display apparatus is changed into a white image corresponding to the set color temperature obtained by the set color temperature obtaining unit; and a tone characteristic setting unit that sets a tone characteristic of the reference color corresponding to the set color temperature, based on the maximum tone value of the reference color calculated by the maximum tone value calculator, wherein the tone characteristic setting unit only corrects the tone characteristic when a decrease in the maximum tone value relative to a previous maximum value reaches a predefined threshold that is greater than zero; wherein the tone characteristic setting unit corrects the tone characteristic in a region in which a tone value of an input image signal is equal to or smaller than a predetermined value so that a tone value of an output image signal obtained as a result of converting the input image signal is increased in response to determining that the maximum tone value of the reference color is decreased from a maximum tone value of the reference color that has been obtained before the set color temperature is set.