Computer-readable recording medium storing object detection program, device, and machine learning model generation method

An object detection apparatus comprising:

• a memory;
• and
• a processor coupled to the memory, the processor being configured to perform processing including:
• acquiring, from among a first machine learning model, a first machine learning model portion that specifies a region in an image that includes a first object, the first machine learning model being a model trained based on training data in which the first object is labeled in an image;
• generating a third machine learning model by combining the first machine learning model portion and a third machine learning model portion of a second machine learning model, the second machine learning model being a model that includes a second machine learning model portion and the third machine learning model portion and that is trained based on training data in which position information regarding the second object is labeled in an image, the second machine learning model portion being a machine learning model portion that specifies a region in an image that includes a second object, the third machine learning model portion being a machine learning model portion that determines a position in an image of a specified region;
• and
• outputting a detection result of an object by inputting an image to the third machine learning model.