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Questions tagged [point-clouds]

A point cloud is a set of vertices in three-dimensional space, and is commonly the data set output by 3D scanners.

Point clouds are applicable to a variety of 3D imaging scenarios, including terrain mapping, CAD modeling, animation and metrology. A point cloud is a raw data set that typically needs to be converted into a useful data set, a process known as surface reconstruction. There are a variety of known algorithms that make this conversion.

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Extrude convex hull

Hy! I have a set of points in 3d which all lie on a plane and represent the floor of a room. Now I want to create walls. My idea is to extrude the floor, or to use translational sweeps. I tried to finds some code in the web or information where to…
user2576458
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savePolygonFileSTL doesn't save correctly

using the function savePolygonFileSTL in my code I obtain an empty file of only 1KB in which is written only: solid ascii endsolid I used OrganizedFastMesh function to get the mesh, but I obtain different results saving it as VTK file than STL…
SPS
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PCLVisualizer.addPolygonMesh doesn't show anything

using my code I want to visualize mesh. I use this code snippet, just after poisson.reconstruct function. Running it, the viewer shows nothing, and the terminal says that there is no mesh. Why? Is there an error? Where? How to solve? Thanks in…
SPS
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configuration VS2010 for GreedyProjectionTriangulation

I have a code based on PCL 1.6, using functions as OrganizedFastMesh and Poisson, and it works well. But When I add this code to use GreedyProjectionTriangulation function VS2010 return this error: *Error 51 error LNK2001: unresolved external…
SPS
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Bayesian Point Cloud Reconstruction implementation

I need to be able to generate a mesh from a unordered point cloud data. While I was trying to implement the Marching Cubes algorithm I stumbled across this paper: Bayesian Point Cloud Reconstruction I wonder if there's already an implementation in…
Eduardo Brites
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Which protocol (UDP or TCP) to use in streaming images wirelessly

Our project involves streaming captured pointCloud images from Xtion Pro Live to be transmitted wirelessly from a raspberry pi to a laptop. We propose to use UDP over TCP since UDP is faster than TCP. However, we also wanted to let the raspberry pi…
Xegara
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Scaling a point cloud of object and centering it over original object ensuring they do not intersect

I have a rabbit point cloud - can be any object though. I want to get the larger rabbit directly over the smaller one. Think of a matryoshka dol with different layers. The problem is getting the outer layer to fit perfect around the inner layer .…
West1234
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Making the normals of a point cloud point outward by duplicating the cloud ,enlarging it and centering it over the original cloud

I am doing a undergraduate thesis on point cloud reduction. I need the normals to point outwards. I have been struggling with this for some time now. This is how I am trying to go about it: I have a point cloud of an object,specifically the stanford…
West1234
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Using pcl_to_scan without OpenNI to convert PointCloud into LaserScan

I'm working on a project that uses Kinect for robot navigation. We use ROS Groovy as distro and Gazebo for simulation, and have sensor and model plugins for the robot model. We have manipulated kinect model using the .sdf file and added…
mozcelikors
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surfnorm function more efficient way Matlab

After constructing the point cloud I want to get the normal of each point and I used the built-in matlab function surfnorm but its takes a lot of processing time. So if anyone could assist me do this a better and more efficient way.
Tak
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Save a point cloud on as an image, considering the size and distance of each point

I want to save an entire point cloud as an image, considering the size and distance of each point. I represent the pixels of the image as a one dimensional array the represents the pixels and their RGB values. Right now, in order to print a point,…
YogevSitton
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Find Bounding Box of a 3d point cloud using PCA

I'm trying to find a bounding box of a 3d point cloud using PCA. I'm using the JAMA "Java Matrix Package" in order to perform SVD. I'm sampling 1000 out of my point cloud and perform SVD: Matrix pointsMatrix = new…
YogevSitton
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Converting between PointT and PointXYZ

I have compiled and run this https://github.com/otherlab/pcl/blob/master/apps/src/openni_ii_normal_estimation.cpp However I now want to be able to access the underlying raw information about the normals and x,y,z points. However, I cannot seem to…
friartuck
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Converting 3D point clouds to range image

I have many 3D point clouds gathered by velodyne sensor. eg(x, y, z) in meter. I'd like to convert 3D point clouds to range image. Firstly, I've got transformtation from Catesian to spherical coordinate. r = sqrt(x*x + y*y + z*z) azimuth angle =…
J park
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Removing point from cloud which are closer than threshold distance

I am importing mesh file where each face is described by coordinates of its vertices. Most vertices are shared between points. Therefore, I would like to eliminate points which are closer than threshold to a point which has been already added to the…
eudoxos
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