A non-transitory computer-readable recording medium stores a determination program for causing a computer to execute processing including: acquiring a plurality of pieces of image data captured by each of a plurality of cameras; specifying a position of a person included in each of the plurality of pieces of image data by a first index different for each of the plurality of cameras; specifying the position of the person specified by the first index by a second index common to the plurality of cameras; and determining whether the person included in each of the plurality of pieces of image data is the same person on the basis of the specified position of the person that uses the second index.