1. An object detection method used to detect an object in an image pair corresponding to a current frame, the image pair including an original image of the current frame and a disparity map of the same current frame, the original image of the current frame including at least one of a grayscale image and a color image of the current frame, the object detection method comprising: an obtainment step of obtaining a first detection object detected in the disparity map of the current frame; an acquisition step of acquiring an original detection object detected in the original image of the current frame; a first correction step of correcting, based on the original detection object, the first detection object so as to obtain a second detection object; and an output step of outputting the second detection object.