Patent ID: 8502871
Filing Date: 2013-08-06
Classification: G06T

Abstract:
1. A gauge line position measuring device for measuring a position of a gauge line provided on a test piece by a non-contact video method, comprising: a gauge line mark adapted to be provided on the test piece and having said gauge line and a first continuous harmonious color density arranged line-symmetrically with respect to the gauge line; a video camera for taking an image of the gauge line mark on the test piece and outputting gauge line mark image data; and a calculation device for calculating a gauge line position based on the gauge line mark image data, wherein the gauge line mark is a gauge line sticker on which the gauge line mark is printed; and said first continuous harmonious color density is an achromatic or chromatic colored continuous harmonious distribution gradually changed in a direction away from the gauge line and arranged line-symmetrically with respect to the gauge line; wherein the calculation device preliminarily calculates a first function f