ABSTRACT
With the development of High-speed rail, the demand of maintenance of High-speed Railway Bridge is further increased. In the bridge inspection, it’s critical to retrieve the crack properties precisely. Usually, the crack is measured manually by specialists. However, this lacks efficiency and objectivity which are needed for quantitative analysis. Besides, it can be very dangerous for people because the bridges of high-speed railway are usually very high. Consequently, some new detection methods must be developed to improve the inspections.
