Images are divided into image groups based on time information indicating a time corresponding to each of the images. If the number of the image groups obtained in the dividing is smaller than a predetermined number, the number of the image groups is matched with the predetermined number by increasing the number of the image groups. If the number of the image groups obtained in the dividing is larger than the predetermined number, the number of the image groups is matched with the predetermined number by decreasing the number of the image groups. At least one image included in each of the image groups obtained in the matching is laid out in a template.