Reconstruction of Three-dimensional Pavement Texture based on Improved Binocular Vision Incorporated Faster-RCNN
In order to enhance the adaptability of binocular vision to extreme lighting conditions and improve its lighting applicability in the measurement of three-dimensional(3D)pavement texture,Faster RCNN target detection network is introduced into this study.Then the laser constrained improved binocular vision reconstruction algorithm incorporating Faster RCNN is constructed and the binocular measuring device of pavement 3D texture is also developed.In addition,the results of laser constrained target extraction,pavement 3D texture reconstruction and actual scene application are further analyzed before and after improvement of algorithm.The results show that the incorporation of Faster RCNN can enhance the ability of extracting the target and improve the ability to adapt to extreme light.Under the two extreme lighting conditions of 5 Lux and 1 050 Lux,the average deviation of elevation difference is reduced by 68.6%and 70.0%to 0.11 mm and 0.09 mm,respectively.Simultaneously,the improved algorithm can also maintain good measurement accuracy and stability in the actual scene,and its maximum and average deviation of elevation difference can still meet the accuracy requirements of 3D pavement texture measurement.