triangulation Questions
4
Solved
Say we have a Delaunay-triangulation like this one:
produced from fillConvexPoly on getVoronoiFacetList
Inside there are triangles that can be obtained via getTriangleList. I want to draw Dela...
Diagnose asked 17/5, 2020 at 16:10
6
I'm looking to do a linear interpolation of a irregularly sampled function z(x,y) based on a Delaunay triangulation. Say I have a hill for which I have obtained a Delaunay triangulation:
I know...
Beckmann asked 12/9, 2011 at 14:1
4
Solved
I would like to get the center point(x,y) of a figure created by a set of points.
How do I do this?
Martres asked 4/12, 2010 at 21:21
4
Solved
I have a triangulated mesh. Assume it looks like an bumpy surface. I want to be able to find all edges that fall on the surrounding border of the mesh. (forget about inner vertices)
I know I have...
Norbertonorbie asked 1/1, 2013 at 6:59
6
I'm looking for a library or a paper that describes how to determine if one triangular mesh intersects another.
Interestingly I am coming up empty. If there is some way to do it in CGAL, it is elu...
Piston asked 1/11, 2011 at 21:53
5
Solved
I have a set of points (with unknow coordinates) and the distance matrix. I need to find the coordinates of these points in order to plot them and show the solution of my algorithm.
I can set one...
Buttons asked 9/6, 2012 at 17:26
2
Solved
Given a vector of N-dimensional points. The vector will be of size N+1.
Is there a generalized algorithm to find the center and radius of the ND sphere using those points where the sphere intersect...
Phiphenomenon asked 13/5, 2022 at 13:9
1
I am currently working on a game in Godot which involves rendering countries on a globe. I have very little prior experience with Godot, but have experimented with it in the past.
I am using this ...
Impression asked 4/12, 2019 at 0:24
1
How do you triangulate a polygon in Shapely? Shapely actually offers a triangulate() function, but that only triangulates the vertices of the polygon as a point set. For convex polygons the solutio...
Glut asked 26/11, 2020 at 9:21
5
Solved
I am trying to triangulate some points with OpenCV and I found this cv::triangulatePoints() function. The problem is that there is almost no documentation or examples of it.
I have some doubts abou...
Anaesthesiology asked 30/4, 2013 at 8:37
9
Solved
How to find all neighbors of a given point in a delaunay triangulation using scipy.spatial.Delaunay?
I have been searching for an answer to this question but cannot find anything useful.
I am working with the python scientific computing stack (scipy,numpy,matplotlib) and I have a set of 2 dimensi...
Omsk asked 11/9, 2012 at 17:19
2
Solved
Summary
I'm trying to triangulate points from 2 images but am not getting accurate results at all.
Details
Here's what I'm doing:
Measure my 16 object points in real world coordinates.
Determine ...
Milk asked 25/2, 2021 at 3:27
4
Solved
Is there any open source software available? Basically, I just want to triangulate based on signal strength of routers whose location is fixed and known.
I realize there can be cases of interferen...
Sapsago asked 9/4, 2010 at 1:51
2
Solved
Suppose I want to uniformly sample points inside a convex polygon.
One of the most common approaches described here and on the internet in general consists in triangulation of the polygon and gener...
Robotize asked 7/9, 2020 at 11:12
2
Here's a rough explanation of what I do in vtk:
Create a surface (a minimal surface, not too relevant what it is, the geometry is important though: the gyroid has two labyrinths that are complete...
Ichnite asked 15/6, 2016 at 11:2
6
Solved
Setup
Given some set of nodes within a convex hull, assume the domain contains one or more concave areas:
where blue dots are points, and the black line illustrates the domain. Assume the point...
Limited asked 20/7, 2017 at 23:59
2
Solved
I have an existing system, which provides 3D meshes. The provided data are an array of vertex coordinates with 3 components (x, y, z) and an index list.
The issue is that the index list is a consec...
Boiardo asked 6/3, 2018 at 18:17
3
Solved
I am looking for an algorithm that receives a 3d surface mesh (i.e comprised of 3d triangles that are a discretization of some manifold) and generates tetrahedra inside the mesh's volume.
i.e, I w...
Copra asked 12/8, 2012 at 11:45
2
I'm struggling to get the OpenCV triangulatePoints function to work. I'm using the function with point matches generated from optical flow. I'm using two consecutive frames/positions from a single ...
Trangtranquada asked 16/2, 2017 at 10:49
2
Solved
I am trying to get a 3x4 camera matrix for triangulation process but calibrateCamera() returns only 3x3 and 4x1 matrices.
How can i get the 3x4 out of those matrices?
Thanks in advance!!
Communicate asked 19/4, 2013 at 9:43
1
Solved
Well I'm lacking GraphicsPath in Unity (to fills polygon, draw them with and outline and utilities with shapes in general), so I'm doing my own implementation of it. Well, we could debate also whic...
Bobette asked 11/12, 2018 at 20:18
4
How is the reprojection error calculated in Matlab's triangulate function?
Sadly, the documentation gives no mathematical formula.
It only says: The vector contains the average reprojection erro...
Portecochere asked 17/3, 2015 at 9:21
6
we're trying to use GLU's tesselation functions on a headless, GNU/linux server. We'd like to use PyOpenGL for that, but the problem is that it crashes on a call to gluNewTess (Segmentation fault)
...
Carrie asked 8/6, 2011 at 16:19
3
Solved
I want to find the coordinate of an unknown node which lie somewhere in the space which has its reference distance away from 3 or more nodes which all of them have known coordinate.
This problem i...
Diazonium asked 23/4, 2013 at 18:32
4
Solved
I need to create a triangle mesh from a set of points. The set has very few points so it doesn't need to be fast or optimised (I will deal with 100 points maximum). The mesh needs to be a constrain...
Sourdine asked 6/2, 2017 at 19:7
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