1. An information processing apparatus comprising: a table, configured to save a first Modulation Transfer Function (MTF) value in association with a number of pieces of low-resolution image data, used to obtain the first MTF value, necessary when generating, though super-resolution processing using the low-resolution image data, high-resolution image data used to obtain a second MTF value that is higher than the first MTF value; a determination unit, configured to obtain information indicating the resolution of an image read without performing super-resolution processing from an image reading apparatus having a super-resolution processing function, and determine a number corresponding to the resolution by referring to the table; a unit, configured to output the number determined by the determination unit; a unit, configured to obtain the MTF value obtained from image data read by the image reading apparatus as the first MTF value, perform the super-resolution processing with the image reading apparatus changing the number of pieces of the image data, and obtain the MTF value obtained from the high-resolution image data in association with the number; and a unit, configured to judge whether the obtained MTF value obtained from the high-resolution image data has achieved a target MTF value, and register, in the table, a number associated with the MTF value that achieves the target MTF value in association with the first MTF value.