1. An image resizing method comprising: displaying, by a processor, an original image; receiving, by the processor, a target image; identifying, by the processor, a peripheral region and first and second core regions in the original image based on the target image; determining, by the processor, a target size based on a predetermined criterion to which the original image is resized; determining, by the processor, whether to reduce or enlarge the peripheral region and the first and second core regions and whether to change a position of the peripheral region and the first and second core regions based on the determined target size, a priority determined based on whether the peripheral region includes an object associated with the first core region or the second core region, and relevance with the target image; and displaying, by the processor, a resized image including the entire first and second core regions and part of the peripheral region on the display, the resized image being resized according to the priority determined based on whether the peripheral region includes an object associated with the first core region or the second core, wherein at least one of the first and second core regions is reduced or enlarged based on the determined target size, wherein the resized image includes at least one of the first and second core regions located at a changed position relative to the original image, wherein the part of the peripheral region displayed in the resized image is selected based on determining that the part of the peripheral region includes the object that is associated with at least one of the first and second core regions according to the priority and the relevance, and wherein the part of the peripheral region displayed in the resized image is not selected based on determining that the part of the peripheral region does not include the object that is associated with at least one of the first and second core regions according to the priority and the relevance.