DEVELOPMENT AND ON SITE APPLICATION OF INSPECTION SYSTEM USING LIGHT WAVE CAMERA WITH BUILT-IN CRACK SCALE

This study presents a high speed and precise inspection system that allows remote easurement of cracks using a light wave camera with built-in crack scale. Its applicability is hown with a long and large bridge in Aomori Prefecture which leads Japan in bridge asset anagement. Through this study, not only have such technical issues as the hazard and time limitations in onstructing temporary footholds been provided fundamental resolutions but also timely production f crack measurements, coordinate conversions and transformation into CAD drawings have ecome possible, to create a unique crack measurement and 3D database management system.