A composite image creation system includes: a moving object region specifying unit that specifies a moving object region in each of a plurality of images consecutive in times series; a luminance correction unit that executes luminance correction processing to reduce a difference between a luminance signal in at least a part of one moving object region in one image and a luminance signal in at least a part of another moving object region in another image; and an image combining unit that combines the one image including the one moving object region subjected to the luminance correction processing and the other image including the other moving object region subjected to the luminance correction processing, and generates a composite image by adding predetermined color information to at least a part of the one moving object region and at least a part of the other moving object region in time series.