Post-processing of 3D scanning data for custom footwear manufacture

Abstract

Footwear fitter has been using manual measurement of a long time, but developments of laser scanners in the last few years have now made automatic determination of footwear feasible. Despite the steady increase in accuracy, most available scanning techniques cause some deficiencies in the point cloud and a set of holes in the triangle meshes. Moreover, data resulting from 3D scanning are given in an arbitrary position and orientation in a 3D space. To apply sophisticated modeling operations on these data sets, substantial post-processing is usually required. In this paper, we described an algorithm for filling holes in triangle mesh. First, the advance front mesh technique is used to generate a new triangular mesh to cover the hole. Then, the Poisson equation is applied to optimize the new mesh; then the models are aligned by "Weighted" Principle Component Analysis.