ZLV Online

Abstrakt

The aim of the study is to verify whether it is possible to determine the extent of the damage to the forest road wearing course using terrestrial imaging and compare this method with the current method of tacheometric measurement of the road surface damage. The 3D model was created using photographs of the current state of a damaged forest road section taken by a commonly available camera with a resolution of 16 megapixels, carried manually on the 4 m telescopic rod. Cross sections of the forest road surface were surveyed tacheometrically and compared with the cross sections created in the 3D model. The results of the test section compared with the accuracy of the current method of tacheometric measuring show that the method of terrestrial imaging can be used to detect the damage with an accuracy of up to 3 cm. The Root Mean Square Error of height differences of the 3D model cross sections compared to the point values from the tacheometric measurements of cross sections reached 0.026 m, the X and Y horizontal errors were 0.019 m and 0.029 m, respectively. Based on the results we can conclude that it is possible to use this method to obtain high-quality data on the extent of the damage to penetration macadam road wearing course.