| 摘要 |
<p>PROBLEM TO BE SOLVED: To accurately correct pixel values obtained through reading, in a configuration in which light-emitting elements of respective colors of RGB are sequentially turned on and off after the lighting start timing of the light-emitting elements of respective colors of RGB is fixed, even when the lighting period of the light-emitting elements is adjusted.SOLUTION: A filter processing unit 94 changes the coefficient of a correction filter on the basis of the amount of deviation between a center C of a lighting period of a predetermined LED 20 of LEDs 20 of respective colors of RGB and a virtual reading center C0, so that a pixel value after correction of a color component corresponding to the predetermined LED 20 having the center C of the lighting period deviated from the virtual reading center C0 becomes a pixel value when the center C of the lighting period of the predetermined LED 20 is brought to coincide with the virtual reading center C0.</p> |
