Patent ID: 8849026

Claim:
A method comprising: a first step of selecting a type of a target sample from a plurality of sample type candidates; a second step of measuring a first output level of a reference pixel, the first output level being based on light from the target sample incident on the reference pixel, the reference pixel being irradiated the light from the target sample via a transparent filter; a third step of measuring a second output level of a measurement pixel, the second output level being based on the light from the target sample incident on the measurement pixel, the measurement pixel being irradiated the light from the target sample via a color filter; a fourth step of selecting a level adjustment parameter from a plurality of level adjustment parameter candidates, the selected level adjustment parameter being associated with the selected type of the target sample; a fifth step of calculating using a processor a level adjustment amount from both of the level adjustment parameter and the first output level of the reference pixel; and a sixth step of adjusting the second output level using the level adjustment amount when measuring an output level corresponding to the light from the target sample incident on the measurement pixel.