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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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Can I create point cloud from depth and rgb image?

I am new to 3js, I have 2 images ie RGB image and Depth image. Can I create a point cloud combining these two using 3js? if yes then how?
Renjith Raju
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How to catch PCL_ERROR from RANSAC?

I am trying to use SAC_SEGMENTATION from PCL right now. Sometimes I will get an error like this: [pcl::SampleConsensusModelPlane::optimizeModelCoefficients] Not enough inliers found to support a model (0)! Returning the same coefficients. How can I…
Chris Chan
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Which pcl filter to use to downsample a point cloud

I am getting a point cloud from a lidar on an autonomous driving robot, but it's too much data to process. I already implemented a passthrough filter. I did get a very good result and I was asking myself if there were others filters or methods I…
tony497
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C# and Kinect v2: Merge Kinect-pointcloud with pointcloud of 3D-object

Currently I'm working on a C#-project to merge color and depth information that can be retrieved from the Kinect-v2 device by using the Kinect SDK, with information that can be gathered from 3-dimensional object-files (.obj, .stl, and so on..). As a…
oRole
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How to convert a colored point cloud into a textured mesh?

I have a .ply file which contains a colored point cloud: I need to convert it as a textured mesh. I can create a blank mesh doing: Filters -> Point Set -> Surface Reconstruction: Poisson But the result is a white mesh It seems that all the…
Simone Colnaghi
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How to visualize "XYZL" point cloud?

I have a "XYZL" point cloud like this: pcl::PointCloud::Ptr cloud (new pcl::PointCloud); and I want to visulize it. It is not visualizable by commands that visualize "XYZ" or "XYZRGB" point clouds. Now, I am…
Taraneh
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Computing truncated signed distance function(TSDF) from a point cloud

I'm trying to implement in matlab a function to compute the truncated signed distance function in order to render a volumetric model from a point cloud using something like the method described in this article. Can anyone help me? Thanks in…
Wael
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How do I interpolate a 2D gridded point cloud to a continuous area?

I have a 2 dimensional Numpy NDarray filled with floats between 0 and about 8. This 2 dimensional arrays size is (1000, 1600) and there are about 1400 values, (the points in the point cloud), the remaining values are None, so matplotlib does not…
Baffel
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Ground plane detection and removal for the localization of robot in 3D data

I am using the SACSegmentation from PCL segmentation module in order to filter out the groundplane. The method is fitting the front surface of the 3D object instead of fitting the groundplane as shown in 2nd pcd file below. Any suggestions what…
2017_John
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Why PCL Conditional filter return the same point cloud?

I'm working with PCL to process a point cloud in a way to end with detecting objects in the scene. I add a custom PiontT type and it work fine with me. However, I'm struggling with the filtering algorithms in the PCL library. I tried statistical,…
sakurami
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Kinect v2: Spatial resolution/ depth resolution / camera calibration

For my application, I analyzed the spatial resolution of the Kinect v2. To analyze the spatial resolution, I recorded a perpendicular and planar plane to a given distance and converted the depth map of the plane to a point cloud. Then I compare a…
JavaNullPointer
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Intersection of PointClouds using PCL

Let's say I have two different pcl::PointCloud (altough the point type doesn't really matters), c1 and c2. I'd like to find the intersection of these two pointclouds. By intersection I mean the pointcloud inter constructed such that…
Francesco V.
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How to read .ply file using PCL

I can read .pcd data using this program. #include #include #include int main (int argc, char** argv) { pcl::PointCloud::Ptr cloud (new pcl::PointCloud); if…
userzizzy
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how to color point cloud from image pixels?

I am using google tango tablet to acquire point cloud data and RGB camera images. I want to create 3D scan of the room. For that i need to map 2D image pixels to point cloud point. I will be doing this with a lot of point clouds and corresponding…
david
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Advice on data structure for point clouds

I want to use a data structure in C# to store three dimensional points and use nearest neighbor search, radius search and possibly other operations. The goal is to implement segmentation, triangulation, filtering (median and possibly others),…
RBS
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