Background: Giant acute extradural hematoma following titanium mesh cranioplasty is very rare. Case Report: We report a giant post-cranioplasty which required surgical evacuation and removal of implant. The was done for post-craniectomy defect from right sided decompressive craniectomy fronto-temporo-parietal subdural (aSDH) contusion. On evacuation, patient recovered. Later on repeat with no c...

The paper proposes an approach for stable extraction of the skeleton of a polygonal surface and detection of surface features, ridges and ravines, corresponding to skeletal edges. The approach adapts the three-dimensional Voronoi diagram technique [3] for skeleton extraction, explores the singularity theory for ridge and ravine detection [8], and combines several filtering methods for skeleton ...

In this work a new multi-resolution model is proposed for polygonal meshes. It is based on the dual edge collapse, which performs face clustering instead of vertex clustering. The new hierarchical mesh representation combines a truly selective refinement scheme with a strict control of the two-sided Hausdorff distance. The proposed approach allows to build hierarchical meshes directly over non ...

In this paper we describe a new method for constructing a multi-resolution representation for complex triangle meshes and we describe a new algorithme to reene and to coarsen a simpliied mesh at variable resolution with respect to a given error function. Using this algorithm we show how view-dependent adaptive approximations of the triangle nets with guaranteed approximation error can be genera...

In this work we study the diameters reduction rate for the iterative application of the longest edge (LE) n-section of triangles for n P 4. The maximum diameter dnk of all triangles generated at the kth iteration of the LE n-section is closely connected with the properties of the triangular mesh generated by this refinement scheme. The upper and the lower bounds for d2k were proved by Kearfott ...

Several self-healing protocols utilizing virtual paths have been proposed in the relevant literature. Those which work in a mesh topology function according to three main rerouting strategies (though specific flooding administrations differ): local rerouting, source-destination rerouting, and local-destination rerouting. Most performance studies of self-healing protocols have considered restora...

The ability to control boundary behaviors is critical for the subdivision surface to become a useful representation in computer aided geometric design. Previous methods achieve boundary control by extending the boundary vertices of the control mesh, or by applying different subdivision rules to the boundary edges and vertices. This paper presents an open uniform quadratic subdivision scheme der...

Let d ≥ 2 be an integer, S ⊂ R the unit sphere and dσ a finite signed measure on R whose positive and negative parts are supported on S. In this paper, we derive an error estimate for the quantity ∣∣∫ Sd fdσ ∣∣, for a class of harmonic functions f : R → R. Our error estimate involves 2 sided bounds for a Newtonian potential with respect to dσ away from its support. In particular, our main resul...