1. An apparatus for acquiring colorimetric values of color patches in a color chart, which comprises color patches of a multi-row, by using a colorimeter which is manually slid by a user to perform colorimetry while scanning the plural color patches in the color chart on a row-by-row basis, the apparatus comprising: an obtaining unit configured to obtain a first feature value of color patches, comprising the color patches of the multi-row having a color-difference for each row, for each row relating to color arrangement in a predetermined scanning direction by the colorimeter, a calculating unit configured to calculate a feature value of a color patch for each row relating to the color arrangement in each measured row as a second feature value on the basis of the colorimetric values of the color patches acquired by the colorimeter which is manually slid by a user to perform colorimetry, a first determining unit configured to determine whether the colorimetry by the colorimeter has been succeeded or not based on the second feature value for each row calculated by the calculating unit and the first feature value obtained by the obtaining unit corresponding to the each row, and a second determining unit configured to determine a scanning direction, in which the colorimetry has been performed by using a colorimeter which is manually slid by a user, based on a color-difference of the colorimetric values acquired by the colorimeter.