RESEARCH ON AUTOMATIC EXTRACTION OF BLOCK WALL USING POINT CLOUD DATA

Abstract

 In Japan, there are many disasters such as typhoons, earthquakes, and tsunamis, and it has been pointed out that there is a danger of the collapse of block walls. Therefore, there is an urgent need to understand and inspect the current state of block walls. Tokushima University is conducting a field survey based on the inspection indicators of the Ministry of Land, Infrastructure, Transport and Tourism with the cooperation of prefectures and municipalities. However, since block walls are scattered in various places, there is a limit to covering a wide area in a short time in the current field survey. On the other hand, construction consultants and surveying companies are making increasing use of sensing data such as lasers and cameras. Therefore, in this research, we will refer to the method of improving the maintenance of block walls using sensing data, and propose a technology to automatically extract block walls from point cloud data.