1. An image processing apparatus that creates a still image from a motion picture including a plurality of images, comprising: a storage section that has a storage region for correction required in case that a target image with a predetermined determination size is corrected by using a plurality of images; a size determining section that determines whether or not a size of a target image designated as a still image is equal to or smaller than the determination size; an image extracting section that extracts from the motion picture a plurality of images including a target image designated as a still image and a first image for correction used in case of performing correction using a plurality of images; and a still image creating section that creates the still image by extracting the plurality of images by means of the image extracting section, and by executing first correction for making a correction using the plurality of images in case that a result of the determination indicates that the size of the target image is equal to or smaller than the determination size and that creates the still image by extracting only the target image designated as the still image by means of the image extracting section, and by executing second correction for correcting the extracted target image in case that the determination result indicates that the size of the target image is larger than the determination size.