1. An object detection frame display apparatus comprising: an object detection frame computation section that determines first object detection frames each indicating a region of a detection target object from an input image, and that further determines a second object detection frame by integrating the first object detection frames analogically inferred to be object detection frames related to the same detection target object; a containment frame computation section that determines, for each of the second object detection frames, a third object detection frame containing the first object detection frames serving as a basis for determining the second object detection frame; a display frame forming section that forms an object detection frame to be displayed, based on a relationship of a size of the second object detection frame with respect to a size of the third object detection frame; and a display section that displays the object detection frame formed by the display frame forming section.