Detecting of the defects of pavement of a road by using infrared thermography

Improved image processing of road pavement defect by infrared thermography

“…2 presents the flowchart of the image processing procedure. Sim et al (2015) attempted to detect the edge of the defective zone in the road pavement using such image processing technique but the defect detection performance appeared to be significantly lower than the dimensionless temperature graph [9]. Accordingly, the present study intends to verify the possibility to detect the defect edge by applying values of 0.15 and 0.20 instead of 0.35 for the standard deviation of the Gauss filtering in this image processing technique.…”

“…Other researchers also exploited image processing to measure the area in specimens made of composite materials [10]. Lately, Sim et al (2015) improved the previous thermography by using the natural light as heat source for the road pavement [9]. These authors combined the analysis of the dimensional temperature distribution and the image processing.…”

“…Details of pavement specimens with defect[9] Frame and wooden blocks for the fabrication of pavement specimens[9] Completed asphalt pavement specimens[9] Thermal imaging using natural light[9] …”

“…Surface temperature distribution at defect with size of 80×80 mm[9] Surface temperature distribution at defect with size of 60×60 mm[9] Surface temperature distribution at defect with size of 40×40 mm[9] Surface temperature distribution at defect with size of 20×20 mm[9] …”