Advanced monitoring of cracked structures using video microscope and automated image analysis

Traditionally, the monitoring of cracks in buildings is performed by very simple techniques yielding only limited information. By means of a video microscope in combination with automated image analysis, an advanced and more precise analysis method of cracks in structures is obtained. The system was evaluated during laboratory tests on concrete beams and slabs. Furthermore, on site monitoring has been evaluated by measurements in a historical building in Ghent. The results were verified by means of traditional measuring techniques. For in situ monitoring of cracked structures, the combination of video microscope and automated image analysis seems to be a user-friendly and very accurate technique.