PANTOGRAPH MEASUREMENT METHOD, AND PANTOGRAPH MEASUREMENT DEVICE

摘要

A pantograph measurement method by means of image processing comprising a process (S1) for acquiring a video image of a marker (50) disposed on a pantograph (40) and for generating a space-time image from the acquired video, and a process (S2) for searching for the marker (50) by comparing the search patterns in accordance with the height of the space-time image, wherein: the marker (50) has a stripe pattern in which a first region (51) that cannot easily reflect light and a second region (52) that can easily reflect light are alternately disposed, at least two second regions (52) are disposed, and the stripe width of the second regions are different from one another; and the search pattern corresponds to the stripe pattern of the marker.