1. A setting apparatus for making a setting to detect that a moving object in an image has passed a line set in the image, comprising: a display control unit configured to display, on a display screen, a plurality of figures each of which includes a respective mark at different positions, wherein the mark included in each of the plurality of figures indicates a different point on the plurality of figures or a different part of a contour defining the plurality of figures; an acceptance unit configured to accept designation of one figure from the plurality of figures displayed on the display screen; and a setting unit configured to make a setting to detect that a determination position on an object region of the moving object in the image has passed the line set in the image, the determination position corresponding to the position of the mark on the one figure designated by the designation.