Research and Implementation on 3D Reconstruction Methods for Line Heating Complex Deformation Surface

Due to the complexity and mutability of the hull surface curve in the process of line heating,real-time detection and reconstruction for curved plates' deformation are required in order to get the secondary processing line and machining parameters.Therefore fast and efficient 3D reconstruction algorithm for curved plates' deformation is a key point.Aiming at the deficiency of marching cubes(MC)algorithm's low working efficiency,a new MC algorithm based on space correlation was proposed.Namely only the voxels which intersected with the cube were dealt in the process searching for isosurface,and the class function vtkMarchingCubes in VTK was improved.By test,for the same amount of data,the speed using the improved MC algorithm to reconstruct line heating deformation surface is 1.6 times higher than that of the classic algorithm,thus the improved MC algorithm is high efficient and practicable.