Object detection system, object detection method, and object detection program

An object detection method executed by computer comprising:

• predicting an object presence region, which is a region in which a target object exists in a current image, based on information indicating the target object detected in a past image;
• generating object presence region fragments, which are partial regions of the object presence region, based on the object presence region;
• detecting an object detection fragment, which is a region containing the target object, based on the object presence region fragment;
• and
• detecting the target object from the current image using the object detection fragment.

A non-transitory computer readable information recording medium storing an object detection program for causing a computer:

• to predict an object presence region, which is a region in which a target object exists in a current image, based on information indicating the target object detected in a past image;
• to generate object presence region fragments, which are partial regions of the object presence region, based on the object presence region;
• to detect an object detection fragment, which is a region containing the target object, based on the object presence region fragment;
• and
• to detect the target object from the current image using the object detection fragment.