The detection effect of pavement 3D texture morphology using improved binocular reconstruction algorithm with laser line constraint

Abstract

To improve the precision of traditional binocular reconstruction technology andbetter serve the traffic safety, laser line constraint was firstly introduced. Then three different matching modes, namely the default color, enhanced target line and region segmentation, were established. Finally, the improved binocular reconstruction test system and the three-dimensional texture morphology measurement accuracy evaluation device were produced. The effect of matching modes on the test precision of three-dimensional texture morphology of asphalt pavement was further analyzed. The results show that the introduction of laser line constraint improves the precision for both overall measurement and single point measurement. The improved algorithm under the region segmentation matching mode has a good reconstruction effect. The average deviation of the overall measurement is 0.02 mm, and the maximum deviation of the single point measurement is 0.14 mm, which can meet the requirements of pavement texture detection in skid resistance evaluation.