377 / 2022-03-15 17:43:39

GPU-based fast and high precision Digital Speckle Projection 3D reconstruction method for disk type suspension insulator

disk type suspension insulator,digital speckle projection,semi-global stereo matching,CUDA,real-time reconstruction

Aiming at the problem that the structural parameter of disk type suspension insulator are still measured manually, and it is difficult to balance high efficiency and high precision measurement, a fast and high precision random speckle 3D reconstruction method based on GPU acceleration for insulator is proposed. This method uses random speckle projection to increase the texture details of the measured object, and proposes a high-precision disparity matching algorithm-a semi-global stereo matching algorithm based on reverse synthetic Gauss-Newton iteration (ICGN-SGM) to obtain dense and high-precision disparity data, and then Based on the parallel computing architecture CUDA performs parallel acceleration of the matching algorithm to improve computing efficiency, and finally achieves fast and high-precision three-dimensional reconstruction of the measured object. Experimental results show that the proposed method can accurately, densely and completely restore the three-dimensional shape of insulator, the reconstruction accuracy is better than 0.06mm, and the reconstruction speed can reach 5 frames.