Rail Deterioration Detection Method using Image Spectral Analysis

Abstract

Since many Railway facilities are visually inspected, the use of camera images is being encouraged to improve inspection efficiency. A hyperspectral camera can acquire two-dimensional spatial information of a photographed object and spectral information spectroscopically divided into several dozens or more wavelengths. Using this camera, we expect to be able to capture changes in materials that are difficult to detect visually, from changes in wavelength distribution and intensity of specific wavelengths. This paper describes a basic test applying the proposed method using a hyperspectral camera for detecting rail deterioration, and reports on the obtained results.