To reconstruct an object surface from a set of surface points, a fast, practical, and efficient priority driven algorithm is presented. The key idea of the method is to consider the shape changes of an object at the boundary of the mesh growing area and to create a priority queue to the advanced front of the mesh area according to the changes. The mesh growing process is then driven by the prio...

This paper presents a method to simulate hydraulic erosion and sedimentation on a terrain represented by a triangular mesh in realtime. Our method achieves interactive performances by dynamically displacing vertices using CUDA following physically-inspired principles; the mesh is generated in a preprocessing step to avoid degenerated cases in highly deformed areas.

Daylight simulation for generic environments involves visibility computations from an infinite area light source (the sky). In order to obtain accurate results, this task tends to be very time consuming and also requires a good model discretization that is not automatically done in general. This paper presents a daylight simulation method for interactive direct lighting visualization that perfo...

Purpose Robotic process automation (RPA) has recently emerged as a technology focusing on the of repetitive, frequent, voluminous and rule-based tasks. Despite few practical examples that document successful RPA deployments in organizations, evidence its economic benefits been mostly anecdotal. The purpose this paper is to present step-by-step method investment appraisal business case demonstra...

An efficient and reliable a posteriori error estimate is derived for linear parabolic equations which does not depend on any regularity assumption on the underlying elliptic operator. An adaptive algorithm with variable time-step sizes and space meshes is proposed and studied which, at each time step, delays the mesh coarsening until the final iteration of the adaptive procedure, allowing only ...

Finite element analysts and designers need to feel confident in the results of their analyses before sending a product to prototype or production. Mesh discretization can greatly influence the desired results. In this paper we present framework for adaptive mesh refinement to obtain FEA results with a desired accuracy. The process involves adaptively refining the mesh based on solution error no...

Efficient and accurate solution of the resistive magnetohydrodynamics model presents a significant challenge due to the presence of multiple length and time scales. Explicit time stepping methods introduce stringent CFL restrictions on the time step in order to maintain stability. This restriction is relieved by semi-implicit approaches, but accuracy considerations place practical limits on the...

This paper presents a method to obtain a single continuos polygonal mesh representing a branched structure taken from a tree and modelled by a L-systems-based method. A refinement process is made once the model of the tree is obtained. This process produces smooth transitions in the tree areas joining the branches. That is, the overlapping problems and geometry discontinuities are avoided. Beca...

An algorithm to generate volume meshes by extrusion from surface meshes of arbitrary topology is presented. The algorithm utilizes a three-step, advancing layer scheme to extrude a smooth volume mesh starting from an initial surface mesh. First, a locally orthogonal reference mesh is algebraically generated for the layer. The reference mesh is then smoothed using a locally three-dimensional Poi...