A reading control apparatus that causes a reading apparatus including a light source and a sensor configured to receive light reflected by an original, to read the original, executes control for changing the irradiation angle of the light source with respect to the original. The control is executed to change the irradiation angle for one light source. Read images of the original corresponding to respective changed irradiation angles are acquired based on reflected beams that correspond to the respective irradiation angles and have been received by the sensor. The region of a correction target on the original is detected based on the acquired read images.