Abstract In isogeometric analysis (IGA), the boundary representation of computer-aided design (CAD) and tensor-product non-uniform rational B-spline structure make three-dimensional (3D) problems with irregular geometries difficult. this paper, an IGA method for complex models is presented by reconstructing analysis-suitable models. The CAD model represented polygons or point cloud embedded int...

To exploit the advantageous properties of isogeometric analysis (IGA) in a scan-based setting, it is important to extract smooth geometric domain from scan data (e.g., voxel data). IGA-suitable domains can be constructed by convoluting grayscale using B-splines. A negative side-effect this convolution technique is, however, that induce topological changes process smoothing when features with si...