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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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How align(register) and merge point clouds to get full 3d model?

I want to get 3d model of some real word object. I have two web cams and using openCV and SBM for stereo correspondence I get point cloud of the scene, and filtering through z I can get point cloud only of object. I know that ICP is good for this…
Aram Gevorgyan
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Rendering Point Sprites across cameras in cube maps

I'm rendering a particle system of vertices, which are then tessellated into quads in a geom shader, and textured/rendered as point sprites. Then they are scaled in size depending on how far away they are from the camera. I'm trying to render out…
aferriss
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Dynamically change point color in Three.js PointClouod

I'm trying to render a matrix of points in Three.js but I need to treat each particle in the cloud as an individual "pixel" for which I can change the color of each on the fly. I figured out how to basically render the point cloud, and can set the…
Adam Haile
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Apply color for each and every point in PointCloud Using HelixToolkit

I have created a point cloud in HelixToolKit. I need to apply color for each and every point . When I am using PointVisual3D there is no options for setting color for each and every point . It set color for the whole point cloud. When I am using…
Sujith
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PCL: Creating a real-time visualization from kinect point clouds

Im trying to follow this tutorial: http://pointclouds.org/documentation/tutorials/openni_grabber.php#openni-grabber but I'm not being able to complete it. The tutorial seems simple enough, but nothing seems to be working. When I try to compile it I…
Pedro Batista
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Connecting points to make a triangle

If I have a set of 3d points (AKA point cloud) what is the best way to determine the groups of 3 points (triangles) I should make, to create a surface reconstruction?
worbel
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Manual Triangulation in Point Cloud Library

I have a point cloud, and I have performed a plane detection. Now I want to triangulate the scene. I already have the triangulation of each plane, which looks like this : I want to use Point Cloud Library GreedyProjectionTriangulation in order to…
Cyril
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How to mark NULL data in Point Cloud Library (PCL) when using Iterative Closest Point (ICP)

I´m trying to align 2 sets of point clouds using the Iterative Closest Point (ICP) algorithm integrated within Point Cloud Library (PCL). I´m getting an error report saying that it cant find enough correspondence points. I have already relaxed the…
Nicolai
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Point Cloud Generation

I have a 3-D geometrical shape which I have to convert into a point cloud. The resultant point cloud can be considered equivalent to a point cloud output from a Laser Scan of the object. No mesh generation is neeeded The points generated may be…
OrangeRind
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Kinect Point Cloud Curved Walls

In my Kinect project, I'm trying to create a point cloud from a Kinect sensor. When displaying the 3D points, I'm getting a skewed model where the walls and floors are curved. EDIT: I'm using Microsoft's Kinect SDK. This point cloud was generated…
user977198
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Calculate Hausdorff distance between two meshes

i am trying to find the deviation between two meshes. For e.g. the difference between two sets of points defined in 3d space, and i plan to visualise the distance using some 3d visualisation tool for e.g. QT3d or some open gl based library. I have…
thedorkknight
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PointCloud with multiple Kinects

I am trying to make a PointCloud mapping user with multiple kinects on Processing. I get the user's front and back with 2 kinects on opposite sides and generate both PointClouds. The trouble is that the PointClouds X/Y/Z are not syncronized, it just…
Sérgio Passos Jr.
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Correct use of pdist in Matlab

I have a point-cloud, for which i want to calculate the distance between all individual points in Matlab (preferably without duplicates). The matrix with the coordinates is formatted as: points [ p x n x d ]. Where p = 1 (for now), n is as large as…
user1218247
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How to display a 3D point cloud (.ply or .obj file) in my PyQt5 Gui application?

I have a .ply file which I want to create a sort of viewer for in my PyQt5 GUI. Is there any tool that I can use that helps with that sort of thing? Or a separate viewer which I can integrate into my application and it just opens the file with the…
Saif eldeen Adel
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Python - plotting surface around 3D plot cloud

I run computational fluid dynamic simulation and I want to refine my mesh in the areas for which a quantity is superior to a threshold. I manage to extract the point locations so I obtain a list of points describing the areas that correspond to my…
Martin7
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