An image processing apparatus includes: an object setting section that sets an object image indicating an object which is placed in an image generated by an image capturing section; a detection section that detects the object included in a synthetic image in which the object image and the image generated by the image capturing section are synthesized; and an output section that outputs output information for setting a detection parameter used in a detection process performed by the detection section, that is, output information in which the synthetic image and a detection result of the detection process are associated.