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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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3D point cloud matching

I have a 3D point cloud and I would like to match different point clouds with each other for recognition purposes. Does OpenCV or Tensorflow do it for me? if yes, how? Example: src1 = pointCloud of object 1 src2 = pointCloud of object…
Shakir Sadiq
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For loop over pd.DataFrame continues running but stops working after 100 iterations

I'm trying to apply an offset to every pointcloud in my list, but the offset stops applying after 100 iterations (I checked this manually). There's no error displayed. Unfortunately you won't be able to run the code, because it uses a very large…
schmiggle
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what does mean numbers in paranthesis of multi layer perceptron like (64,128,1024)

Hello every one i'm reading pointnet papper but i cant understand the numbers of network architecture can you explain this to me. enter image description here
mehrdadjavadi
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what distance represent two adjacents pixels

I have a 3d point cloud. I used matplotlib to draw a scatterplot representing the point cloud viewed from above. The point cloud is stored as a list of coordinates in meters. The output of matplotlib.pyplot.scatter is a png image. In addition to…
Eldir
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Finding neighbour vertices of a mesh inside a given radius

How to get neighbour vertices of a mesh inside a given radius using, e.g., CGAL? A simple K-nearest search on vertices neglecting face and edge properties is not sufficient, because if meshes are close to each other, vertices of both will be found…
kenomo
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How to create a point cloud for stereovision using python 3+?

I am new to Stereo Vision, and I am trying to get the size of an object(length breadth, and height). I got a fine result on DepthMap. But I am not able to get any resource on how to plot a point cloud using Stereo Vision. I am currently using OpenCV…
uchiha tashi
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How is RSME calculated between point clouds?

RSME calculates how close the predicted value is compared to the actual value, but in a point cloud, there are 2 things that I am confused about: How do we know which point corresponds to which point, to be subtracted from? Point clouds are…
artguy_
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Quickly reading XYZ point cloud and rendering animated points into Unity

I have an application in Unity that currently reads tens of thousands of points from a text file containing x,y and z coordinates for a point cloud. As one can imagine, this take a large amount of time. I am unfamiliar with particle systems in Unity…
StackingofOverflows
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kitti dataset for object detection and classification 3D lidar point cloud data

I am doing a project on object detection and classification in Point cloud data.For this, I require point cloud dataset which shows the road with obstacles (pedestrians, cars, cycles) on it.I explored the Kitti website, the dataset present in it is…
Saloni Mohan
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How to modify PCL voxel grid implementation?

I would like to turn a 3D point cloud into a simple 2D occupancy grid. In my current implementation I first apply the voxel grid to a point cloud and then I manually iterate through all points in the voxelized cloud to fill in my grid. Is there a…
Chris Chan
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Dicom to .PLY Conversion using VTK

I am trying to convert a DICOM file into PLY format using VTK to further convert it into .pcd (point cloud format). I have followed the example provided here. However in the above example the code is supposed to change .vtu format into .ply format.…
user2521733
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Decrease the density of 3D point clouds

I have a XYZRGB -formatted point cloud data. The file size is huge and it consists of hundreds of thousands of points. How can I decrease the density of points? Say for each 10 neighbors, I want to have a single point average of all other points…
Tina J
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Meshlab advice. Is this software for me?

I would like to create a mesh from pointcloud data. I am able to get pointcloud data from a Faro laser scanner. I can save it as .xyz, .dat, .asc formats. I can't afford to buy Geomagic wrap and would like to know if I can get a quality mesh with…
Christopher Tomko
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What are some good sources for tutorials on structure from motion using OpenCV in Python?

I am working on a project for my thesis, and it requires implementation of the structure from motion technique to create point cloud models of . However, is it possible to define the point cloud model numerically?
troymyname00
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Line up CAD model and point cloud in Revit

So, I am working with Revit, where I want to match a CAD model (.dwg) and the actual point cloud. So far I was only able to add both of them, but they do have different scaling. Can anything be done in Revit in order to line them up?
kissanpentu
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