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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 do we visualize csv point cloud data?

I am having an xyz file I want to preprocess and save it as a df, how do I visualize the csv file or convert it into xyz or las format in python
Nishtha Sharma
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3d model not rotating properly in threejs

I have 3d tileset data (tileset.json),I am loading this tiles into three js scene using three-loader-3dtiles (https://github.com/nytimes/three-loader-3dtiles). it loads properly but its rotation is not working properly, can anybody help in this ? I…
Aakash Govardhane
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How to make surfaces appear solid in python open 3D?

I'm trying to convert a point cloud into a mesh using python open3D, and I'm having trouble making the surface appear solid from all angles when I visualize (see left side of figure). My code is as follows: pcd =…
pvas
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Avoid distortion when inserting a rectangle into a point cloud using plane equation

I have a set of different point clouds, from each of which I find the plane with the largest supponrt and get the plane equation (ax + by + cz + d = 0) Using the plane equation, I am trying to insert a plane into each of the point clouds, which I…
ehtio
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Graph Autoencoder with PyTorch-Geometric

I'm creating a graph-based autoencoder for point-clouds. The original point-cloud's shape is [3, 1024] - 1024 points, each of which has 3 coordinates A point-cloud is turned into an undirected graph using the following steps: a point is turned into…
ann whoorma
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Using PCL with Visual Studio 2010

I am quite new at working with libraries, and I have some problems. I have installed PCL and all dependencies on my computer (Windows 7, 32 bit) and I can build and use simple examples like that "Simple Cloud Visualization" example. But if I want…
Iovius
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Aligning an image to a point cloud

I am extending a 3D webapp that visualizes point clouds, to support images. The app is based on the open source app, Potree (which in turn uses three.js), and allows measuring distances. A demo of the measurement tools in Potree can be viewed…
Imad
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Coloring 3D shapes

How is it possible to color a 3D shape /point cloud (in my case a human body), in such a way that each point has a different color but the color transition from point to point is smooth, as shown in the picture below? The shape of N points is…
orbit
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Open3D Visualization of multiple geometries

today I have started with Open3D and I don't really know how to display more than one Geometry object in one scene/window. When I run my code I have two different and separate windows(first with point cloud, second with lines). How should I use…
speszal
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Change opacity of specific points in Points Cloud data

I am loading some PCD data using the PCDLoader, after loading the PCD data successfully we get the Points to add to the scene. I have a circle on top of the PCD points that I created using the Three.js Line Geometry, I am trying to reduce the…
Zainul Abideen
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open3d compute distance between mesh and point cloud

For a study project, I try to get into point cloud comparison. to keep it short, I have a CAD file (.stl) and several point clouds created by a laser scanner. now I want to calculate the difference between the CAD file and each point cloud. first I…
Marc M
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Filtering pointcloud

I wish to filter a pointcloud, loaded with opend3d, as efficiently as possible. Currently, I perform a downsampling of the points before making a mesh out of them and using .contains on an inclusion volume mesh I did manually. Something like this: …
Juan Solana
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Android OpenGL Point Clouds

I've been trying to use gl.glDrawElements(GL10.GL_POINTS, 4, GL10.GL_UNSIGNED_BYTE, vertexBuffer); to draw 4 points on my screen with a vertex buffer, but I can't get it to work. All I want to draw is points, because eventually I want to make a…
RedLeader
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How can I rotate the pcl::CropBox wrt its own particular axis rather than global axis? or how can I apply affine transform to pcl::CropBox?

I have a cube-shaped point cloud whose x, y, & z-coordinates range from -1.0 to 1.0 unit. #include #include #include #include #include…
Milan
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Contour of 2d point clouds

I have scattered point clouds in 2d. My problem is I would like to get the boundary's point to get the contour of the point clouds. I know about this 'marching square' however this algorithm usually used for pixel in 2d. Any one have idea how to…
stephie
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