Method for evaluating risk of steep slopes using coordinates of center line of roads and pedestrian paths in urban declining area, and recording medium thereof

摘要

The present invention relates to a method for evaluating the risk of a steep slope in a declining area in an urban area, comprising: extracting a road center line (including a pedestrian path) of a target declining area, constructing an irregular triangular network based on the nodes of the extracted road center line, the irregularity Extracting the normal vector from each individual triangle of the triangular network, calculating the inclination between the extracted normal vector and each individual triangle plane, evaluating the protection countermeasure establishment status of each individual triangle, and calculating the protection measure grade, each individual triangle It includes the steps of calculating a slope risk level according to the inclination of and evaluating the steep slope risk of the declined area by combining the protection measure grade and the slope risk level of each individual triangle. According to the present invention, when measuring the slope risk of a declining area in an urban area, by reconstructing spatial information based on the center line (including roads and pedestrian paths) of roads without structures, etc., the topographic information of structures such as building facilities and trees can be recovered without manual work. It is automatically removed, and it is effective for user convenience in calculating the correct slope.