SURVEY AND DESIGN OF PORTABLE LASER SCANNER FOR MEASURING THREE-DIMENSIONAL DATA ON STRUCTURES

Abstract

 In Japan, utilization scene of three-dimensional data measured by instruments of laser scanners and cameras expands with i-Construction politics. So far mobile mapping system has been used in roads. However, it is not suitable to measure in the place where vehicle cannot enter or is difficult to use satellite positioning. For this reason, development of portable laser scanners is flourishing. The instruments are usable for substructure of bridge, mountainous regions, and indoors. But various sensors into the ready-made instruments have different installation angles and accuracy. And, the algorithms of data processing are not released. For these two reasons, it is difficult to analyze the factors of decreasing measuring accuracy in the ready-made portable laser scanners. In this research, an original portable laser scanner was proposed. We surveyed ready-made portable laser scanners and experimented to measure with prototype. And, we designed a portable laser scanner based on these characteristics and usage considerations for measuring three-dimensional data on structures.