Patent Document ID: 20160307313
Application ID: 15101573
Patent Status: 0

Claim One:
1. A tire inspection method comprising the steps of: performing two dimension Fourier transformation on a captured transmission electromagnetic wave image obtained from electromagnetic waves transmitting through: a first region in a tire in which a plurality of reinforcing wires disposed in a reinforcing layer of the tire extends from first ends of the reinforcing wires at an incline in a first direction with respect to a tire width direction, and a second region in the tire in which the reinforcing wires extend at an incline in a second direction different from the first direction due to the reinforcing layer being turned up; extracting a first image component including the first ends of the reinforcing wires located in the first region from a process result of the two dimension Fourier transformation using a first spatial filter generated in accordance with the incline in the first direction; acquiring a first processed image including the first ends located in the first region by performing inverse two dimension Fourier transformation on an extraction result of the first image component; identifying positions of the first ends in the captured image using the first processed image; and inspecting a position of an edge of the reinforcing layer in the tire on the basis of the positions of the first ends.