Development of a System for Measuring Surface Slope with Point Cloud Data

The article explored the development of a surface slope measurement system using 3D point cloud data. The floor slope condition is important for the residential building floor quality inspection. Insufficient slope can lead to surface deterioration and water pocket formation. Current slope measurement in floor quality inspection has problems: time-consuming because of the forming log for each elevation point to calculate, random area points are chosen to measure, and the result did not cover the whole floor area, the tools used in the conventional methods can produce the close result not the exact result for the floor area. The aim of the research is the developed a system that can be used as an assistant tool in floor slope inspection with 3D point cloud data so that the calculation can be applied to all areas of the floor. 3D point cloud data can be collected using a FARO 3D laser scanner and execution of the system from acquired data will be performed in MATLAB. The system produces the slope value of the inspected room as well as the direction of the slope to decide the correct direction of the drainage of the floor which is important to access the bathroom or balcony in the residential building.