In our approach as a domain of the parametrization we use a different 2-dimensional domain, the surface of a very coarse simplicial complex that has the same topology of the original mesh and it is composed by just a few hundred triangles. Usually textures are defined in a dominion that is just the (0,0)-(1,1) square on the plane. Without going into details, that you will find in the above paper, the main idea is rather simple. IEEE Transaction on Visualization and Computer Graphics, Volume 16, Number 4, page 621-635 - July/August 2010 Nico Pietroni, Marco Tarini, Paolo CignoniĪlmost isometric mesh parameterization through abstract domains The second one is particularly important, infact the basic edge collapse simplification algorithms can during simplification change the topology of the mesh, and while this is usually a nice feature (it allows for example the closure of very small holes) when you start from a mesh that is surely clean (a 2-manifold watertight model) it is better to be sure that such properties are preserved.Īfter that you can start with creating the Abstract Isoparametrization, a technique we introduced in: Take care to check Normal Preservation and Topology preservation Flag. So simplify it our watertight skull up to 50000 triangles. In this case some portions of the skull are remarkably thin and at low resolutions the poisson surface reconstruction can create unwanted holes. For this kind of processing a quite faithful geometric representation is not needed, but it is strongly needed that the overall topology is the right one. A reconstruction at depth 9 is usually good, that generates a mesh of 1.3M of faces. Poisson surface reconstruction is a perfect filter for this task. So the first step is to build a watertight, coarser but topologically sound model. The mesh of the skull is composed by 1.000.000 triangles, it has a meaningful per-vertex color (recovered from a set of photos) and, as it often happens, it is topologically dirty.įirst of all it is non 2-manifold (there are 7 edges where more than two face are incident) than there are many small holes and handles that make difficult any kind of parametrization. You can see it depicted in the two small figures on the right. Let's start from a medium complexity mesh of a skull (kindly provided and scanned for the VCG Lab by Marco Callieri). Now some a two-part tutorial on his practical usage. In the last release of MeshLab we included our state-of-the-art parametrization/remeshing algorithm based on abstract parametrization. Safari constantly being beyond stupid.In the pipeline of processing 3D data, after you have aligned and merged your range maps, you ofter require to get a nice clean textured mesh. 8 gb ram, 100+ gb space in my hdd, mid-2012 cMBP. Also often if I use an app then try to use Safari, the favorites page is open but any favorite and/or type anything in the location bar: beach ball. I have no plug-ins or extentions installed for Safari. If I just used it before using another app such as preview, quicktime, pixelmator, itunes, etc, then try to use Safari again after it's been quit it just usually won't open any links / websites without force quit the app, then force quit finder.

I have no idea what is happening, it just seems that Safari forgets it's an app to be used and doesn't want to open anything because it doesn't remember how to.

I have probably sent 100+ Safari error reports to Apple since installing Yosemite. I earlier today had to force quit Safari like 4x then had to just restart because still it wasn't cooperating. Very often Safari just won't open links/websites (I regularly use) no matter the wait.

Meshlab takes forever to start