Stack Overflow
Stack Overflow

Questions tagged [lidar-data]

38 questions
2
votes
1 answer

Convert a pointcloud from .txt to .ply

I am new to Pointcloud (LiDAR) processing and I was wondering if there is any tool/library able to convert a pointcloud saved in .txt to a .ply file. The pointcloud .txt looks like this pointcloud_width pointcloud_height point1_x point1_y point1_z…
desmond13
  • 2,913
  • 3
  • 29
  • 46
2
votes
1 answer

What are the contents of PointCloud2?

What does the contents of PointCloud2 means in ROS? fields.offset? fields.datatype? fields.count? point_step? row_step? Its documentation is poor Here is a published PointCloud2 message by Velodyne LiDAR: header: seq: 1071 stamp: secs:…
Benyamin Jafari
  • 27,880
  • 26
  • 135
  • 150
2
votes
3 answers

How to convert pcap data of Velodyne's VLP-16 to point cloud without using Veloview?

I am new to LiDAR technology. From the Documentation I found that we can visualize LiDAR data using Veloview software. But my aim is to create a 3D image using .pcap file and process it further for object detection. Whole working is in Ubuntu 14.04.…
Shaikh Ibrahim
  • 73
  • 2
  • 9
2
votes
1 answer

Activate Run the libLAS C++ library within R

I would like to use the libLAS C/C++ library functions within R to import, analyse, export terrestrial lidar data. libLAS is a C/C++ library for reading and writing the very common LAS LiDAR format ( http://liblas.org/index.html ). Would it be…
Janvb
  • 1,290
  • 2
  • 16
  • 17
2
votes
2 answers

tools for viewing TIN files

is there any free open source tools available for viewing TIN (triangular irregular networks) files( which i got from LAS (Lidar data) file...)? thanks!
asel
  • 1,099
  • 5
  • 14
  • 18
1
vote
1 answer

Difference in range of values between LMS111 and LMS511 sensors for millimeter measurements

I have been working with the LMS111 and LMS511 sensors, both of which emit data in millimeters. However, I have noticed a discrepancy in the range of values obtained from these sensors. The Data i received from the sensor LMS511: sRA LMDscandata 0 1…
Saro Dev
  • 37
  • 4
1
vote
0 answers

How to perform Deep learning on pointcloud data 3D

I've an h5 file which has [r,g,b,x,y,z] information for each point in the point cloud. The point cloud has labels stored in a .bin file. Each row has a corresponding label. This is a classification problem. I'm stuck at data processing stage. How to…
h612
  • 544
  • 2
  • 11
1
vote
0 answers

Trying to Load LAS file in R

My apologies if this question is a little rudimentary - I'm intermediately experienced in troubleshooting with R, but this issue is persistent, possibly because I'm a little new to R's spatial packages. I'm trying to use R to process lidar data. I…
O_Paris
  • 11
  • 1
1
vote
0 answers

Is there an algorithm that finds the average OF the outliers? Converting Lidar Data to Touch Points

I'm relatively new to programming, though I understand how it works at an intermediate level. I have a LiDAR sensor (YDLiDAR-G4) that is set up on top of a wall, scanning everything across the wall. The goal is to have it so when someone touches the…
SUNiMOD
  • 75
  • 2
  • 4
1
vote
0 answers

Are KITTI depth maps showing distance from camera point or camera plane?

I was always using KITTI raw LiDaR scans data set as a ground truth for my depth studies and thought that they are representing distance between some point and camera plane, i.e. z coordinate. For example, pixel depth of 364th row of the image…
Benjamin
  • 165
  • 1
  • 7
1
vote
0 answers

3D mapping using a 2D LiDar with embedded IMU

I am working on the MRS1104C and I am trying to map an orthogonal box. I am using only 1 of the 4 layers. I have positioned the sensor perpendicular to the floor and I get the measurements of distance, angles and quaternions from the embedded to the…
Dr. Quest
  • 11
  • 4
1
vote
2 answers

How to train 3D point cloud data? Where should I beginn?

I'm an automotive engineer student, and at the moment I'm working in a project for an autonomous bus at the university with 3D point clouds from a lidar sensor. My job here is to train the point cloud with deep learning algorithms. But I do not know…
Le Thai Mai
  • 43
  • 4
1
vote
1 answer

how to remove outlier points in PCL for region grow based surface detection

I am using PCL to detect surface in my lidar point cloud, and I have the configuration as below: pcl::RegionGrowing…
shelper
  • 10,053
  • 8
  • 41
  • 67
1
vote
1 answer

Read Lidar data

I have point-cloud data from Neptec's Opal Lidar in .mat format. The data is in the cartesian format where i have struct type with points in one table and intensity in another struct. I converted it to csv file in python and want to read it for…
pmdav
  • 301
  • 4
  • 14
1
vote
1 answer

Best approach to mapping interior point cloud with LIDAR

Recently started playing with and built a 3D LIDAR using an Arduino, 2 servos and a Garmin Lite 3 LIDAR. Stationary mapping works great, but now I would like to move into interior mapping with a handheld unit. With an exterior unit I would of course…
Geppelt
  • 363
  • 2
  • 14
1
2 3