Activity: Talk or presentation types › Oral presentation
When X-ray computed tomography is used to measure complex surfaces with internal features, the reconstruction of the measured surface is usually represented by a triangular mesh. The roughness surface used to compute areal texture parameters is computed by removing the form surface from the measured data. The form surface estimation is based on the point cloud represented by the vertices of the mesh. A method to take into account the different spacing between the measured points, weighting each point by the areas of its neighbourhood triangles, is presented. The proposed algorithm is compared with the standard form estimation method by examining the values of areal texture parameters. The effects of two reconstruction methods used during the conversion from the volumetric data to the mesh and the mesh simplification on the texture parameters computation are analysed.