An image processing apparatus obtains, in both a first image obtained by capturing an object and a predetermined space including the object, a corresponding feature part of the object, specifies a first point on the first image and a second point on the predetermined space, calculates a degree of matching between the first point and the second point, based on a positional relationship between the first point on the first image and the feature part of the object, and a positional relationship between the second point on the predetermined space and the feature part of the object on the predetermined space, and causes a display unit to display the calculated degree of matching.