To make it possible for a user to easily modify the recognition state of a document by document recognition processing at the time of multi-cropping processing. A preview screen is displayed on a user interface, which displays the results of the document recognition processing for a scanned image obtained by scanning a plurality of documents en bloc on the scanned image in an overlapping manner. Then, a button for dividing the detected document area is displayed on the preview screen so that it is made possible for a user to easily perform division.