Stack Overflow
Stack Overflow

Questions tagged [lidar]

LIDAR (Light Detection And Ranging) is an optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target.

If the question is not solely about programming it might be suitable on gis.stackexchange.com

Programming questions related to lidar geospatial data are also welcome on GIS SE.

429 questions
1
vote
1 answer

How to solve Error installing package lidR in R?

I am using amazon sagemaker notebook instance. And i am trying to install lidR package into R notebook but i got following errors. How can i. Solve it? Code; install.packages("lidR") Error; installing the dependencies ‘units’, ‘lwgeom’, ‘raster’,…
Sevval Kahraman
  • 1,185
  • 3
  • 10
  • 37
1
vote
0 answers

Apples RealityKit Framework in Xamarin.iOS - LiDar scanning

Okay, I am a Xamarin developer and have been doing some R+D on how I can get a LiDar scanning module up an running for my latest project. In my research I have found Plenty of Swift related projects that I can use in creating a solution, but they…
James McNulty
  • 23
  • 1
  • 6
1
vote
0 answers

How to find the best translation available to match two sets of related points that do not exactly match?

I'm working with lidar data for forestry analysis. I'm trying to match some tree measurements that were taken on the ground. Circle areas were defined, and the center coordinates of those circles were measured using a GPS that was only accurate to…
user19109076
  • 11
  • 2
1
vote
0 answers

Generate mesh from depth information and RGB images

I would like to reconstruct a 3D object given a number of images and their associated (pixel-wise) depth information. Something along the lines of what NeRFs do. I found this python package (vtk) but I'm not sure whether it is able to do what I…
Mariusmarten
  • 255
  • 3
  • 15
1
vote
0 answers

Conversion of lidar data (.las) to binary lidar data (.bin) format (Kitti dataset format)

I have a .las file (lidar data) obtained from high-speed phase-based laser scanner. So the problem is most algorithms for object detection in 3D point cloud work on the .bin(Kitti dataset format) file. I wanted to know if this conversion can be…
Om Tiwari
  • 11
  • 1
1
vote
0 answers

How to run Python code on GPU without Numba?

I wanted to know that how to run Python code which uses 3rd party libraries on GPU. I was thinking to use Numba and watched some videos on it, and came to know it would not "convert" 3rd party libraries. Particularly I am using Open3d in my Python…
Ashutosh Sharma
  • 11
  • 1
1
vote
2 answers

Python graph segmentation

I am trying to detect an open door using LIDAR. I have 270 degrees LIDAR read and I'm trying to detect the door from the graph: The door is the peak between 100 and 150. The door is between ~30 and ~40. Here there is a "noise" spike. I can see…
Hadar Shavit
  • 107
  • 1
  • 11
1
vote
1 answer

How retrieve the normal for a given face of ARMeshGeometry?

given a ARMeshAnchor 'meshAnchor', i can retrieve its geometry and faces : let geometry = meshAnchor.geometry let faces = geometry.faces var i = Int(0) while i < faces.count { //??? get the normal of faces[i] i = i+1 } how can I retrieve the…
Gogo123
  • 655
  • 1
  • 4
  • 11
1
vote
0 answers

Calculate volume using Lidar in embedded system

I am developing the system to calculate volume of the object using 2 Lidar.1 Lidar is placed left, other is placed right. I am calculating the x-axis and y-axis position of these points. The object moves on the check weigher, so I can calculate the…
mücahit türk
  • 11
  • 2
1
vote
2 answers

Convert pcd files to pointcloud2

i have many pcd files which were collected in every scan of a lidar. I want to convert my pcd files into pointcloud2 format to use them as a rosbag. I saw the pcd_to_pointcloud from point cloud library, however it is only applicable to a single pcd…
overflush
  • 25
  • 1
  • 7
1
vote
1 answer

LiDAR | Swift | How to Export real texture 3d model using LiDAR Scanner

How to export same model with real world texture? We used many demo and combine logic for export 3d model (usdz) with real texture. But, We get success in only export blank (white/gray) model. we used below code for export 3d model. func…
Chirag Joshi
  • 29
  • 6
1
vote
1 answer

How to spllit laserscan data from lidar into sections and view them on rviz

I was trying to split the laser scan range data into subcategories and like to publish each category into different laser topics. to specify more, the script should get one topic as an input - /scan and the script should publish three topics as…
Akash
  • 91
  • 2
  • 16
1
vote
0 answers

Topic synchronization in ROS using timestaps

I have 2 rosbags, one with camera data, the other with lidar data, and I want to synchronize the topics listed below to get something like a kitti dataset. Topics Types Message…
speszal
  • 51
  • 1
  • 5
1
vote
1 answer

ROS: tf with RPlidar

I'm using ROS and a RPLidar A2 and apparently the sensor turns clockwise which means its reference frame (see image below) isn't the same as a normal cartesian frame (x axis on 0°, y axis on 90°). So i need to transform the frame via tf to make it…
Aziz zeGeek
  • 107
  • 1
  • 2
  • 10
1
vote
0 answers

Integration a deep learning model with ROS

I am using VLP-16 velodyne sensor, I try to detect pedestrians by some deep learning methods. But I don't know how to use the trained model with ROS. For example, write a ros node to get the trained model and integrate it with other packages such as…
Yi-Cheng
  • 19
  • 5
1 2 3
…
28 29