Image processing apparatus, image processing method, and storage medium

An image processing apparatus configured to combine a plurality of images, comprising:

• a first print control unit configured to cause a printing apparatus to print a first sheet for adding first information, by a user, for specifying a part of each of the plurality of images to be used for determining a relative position of the plurality of images;
• a first determination unit configured to input a first read image obtained by reading the first sheet, including the first information, printed by the first print control unit by a reading apparatus and determine the part of each of the plurality of images specified by the information included in the inputted first read image;
• a second print control unit configured to cause a printing apparatus to print a second sheet on which the part of each of the plurality of images determined by the first determination unit is included and second information for determining the relative position of the plurality of images is to be added by the user based on the part;
• a second determination unit configured to input a second read image obtained by reading the second sheet including the second information, printed by the second print control unit by the reading apparatus and determine the relative position of the plurality of images based on the second information included in the inputted second read image;
• and
• a combining unit configured to combine the plurality of images based on the relative position determined by the first determination unit.