Evaluation of Head Defect Images of Railway Rails in Laser Scatterometry

Th e images of head checking faults of railway rails have been examined by laser scattering method. Th e studies used the functions of similarity and distance, both for binary images and multi-level quantized ones. Th e analysis was performed on the basis of numerical calculations, experimentally determined images of samples of these defects. Th ese type of functions have proven extremely useful in evaluating these faults and can be used to classify them.