| 摘要 |
An image reading apparatus for reading an image with respect to a plurality of colors, including: a reference member; an image reading device including a plurality of light receiving elements, the image reading device reading the reference member to obtain white level information for the respective colors, the white level information for each of the colors being a set of data of a quantity obtained by the light receiving elements, the read image being corrected based on at least the white level information; a ratio calculator calculating a ratio among the information of the respective colors; an abnormal-data determiner determining that a first piece of data in the level information of any particular color is abnormal data, where the first piece of data is different from a second specific piece of data in the level information of the same color which second specific piece of data is in a predetermined relationship with the first specific data, by an amount not smaller than a threshold, or where the first specific data is outside a range; and a data corrector obtaining correction data obtained by multiplying, by the ratio, corresponding data which corresponds to the abnormal data according to a predefined principle and included in the information of at least one color determined to be not including the abnormal data, and replaces the abnormal data with the correction data.
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