Provided are a detection method and a detection apparatus. The detection apparatus for detecting a three-dimensional position of an object includes a feature point detecting unit that, with consecutive or at least alternately consecutive two images among multiple images sequentially imaged when a robot is moving being a first image and a second image, detects multiple feature points in the secondimage including one feature point detected in the first image; a distance calculating unit that calculates a distance between the one feature point of the first image and the multiple feature points of the second image; and a feature point determining unit that determines a feature point for which the distance is the shortest. With consecutive or at least alternately consecutive next two images being the first image and the second image, processing for determining a feature point for which the distance is the shortest is repeated, thereby tracking the feature points of the object.