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
3
votes
3 answers

Merging same vgg16 model but with different inputs

I am working on a classification problem in a project. The specificity of my problem is that I have to use two different type of data to manage it. My classes are Car, Pedestrian, Truck and Cyclist. My dataset is composed of : -Images coming from…
Doxcos44
  • 135
  • 2
  • 12
3
votes
2 answers

Converting coordinates vector to numpy 2D matrix

I have a set of 3D coordinates points: [lat,long,elevation] ([X,Y,Z]), derived from LIDAR data. The points are not sorted and the steps size between the points is more or less random. My goal is to build a function that converts this set of points…
Tom
  • 424
  • 2
  • 8
  • 19
2
votes
0 answers

How do I connect to a device putting out UDP packets in Python?

I have a LIDAR device connected to my home PC. The LIDAR has an IP of 192.168.1.201. I have configured it to give its data out on port 2368. My PC has an IP of 192.168.1.202. I have confirmed on wireshark that there are indeed UDP packets on the…
Tony Carrick
  • 21
  • 2
2
votes
1 answer

Python | Too many bytes in the input buffer RPLidarException: Incorrect Descriptor Starting Bytes when running and plotting with RPLIDAR

I am running an RPLidar a1m8 connected to my computer over USB. I am trying to continually collect data from it and graph it using matplotlib. This works for approximately 25 lines but then I get the error, if anyone knows a solution to this it…
Garberchov
  • 67
  • 1
  • 15
2
votes
1 answer

Generate image from an unorganized typical scan-pattern lidar's point cloud data

I hope you guys doing well I have a LiDAR which is Livox Mid 70. Which have a scan pattern like this. scan_pattern, which is depends on the time and create the whole scene. I used ros to fetch the data from a perticular topic and create the numpy…
rohan099
  • 83
  • 1
  • 5
2
votes
0 answers

Export Model with color - How to save the 3D model with real life colors?

How to save the 3D model with real life colors? Using mesh generated by LiDAR scan, I make an object scanner. But when I save the model as .obj or .stl, it is colorless. I'd like to save in a format where it retains the color in the model as it…
David Silva
  • 21
  • 1
2
votes
1 answer

How to get a circular subset of a las-dataset with specific area using lidR::clip_circle()?

To get a circular subset of a las-dataset with specific area, I would like to use lidR::clip_circular(). To do so, I first calculate the central point of my las-dataset, then I define the radius I want to use, to get a subset of exactly 500m^2 from…
ExploreR
  • 313
  • 4
  • 15
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

Save a PCL specific view as image

I am new to C++ and the use of the Pointcloud Library PCL (https://pointclouds.org/). At the moment I am able to generate a viewer of the point cloud by using the and I was wondering if it would be possible to…
desmond13
  • 2,913
  • 3
  • 29
  • 46
2
votes
2 answers

Display Dynamic Raster (lidar) Data on Web Map like Geoserver, Bing Maps, Google maps from Ground up

I have some high quality LiDAR data. I need to process it dynamically, and update a field (not elevation field) depending on my input and elevation at that point. Once this is done, I need to display this raster data on Web Map (Bing Map, Google Map…
Shaunak
  • 17,377
  • 5
  • 53
  • 84
2
votes
1 answer

Set up conda environment for R package not on CRAN, installs to wrong location

My goal is to use this package (https://github.com/tiagodc/TreeLS) but it was deprecated from CRAN (https://cran.r-project.org/web/packages/TreeLS/index.html). It requires an older version of R yet its dependencies such as the raster package require…
nerdsconsider
  • 123
  • 4
2
votes
0 answers

Neural Network with Lidar (ROS)

i am working on a neural network project via ROS, i want to know how to process lidar data directly to neural network via tensorflow and keras on python How can i subscribe the lidar data in ROS and works it with keras or tensorflow directly? i just…
Anto
  • 61
  • 7
2
votes
0 answers

ARKit - Capture textures for provided environment mesh using Lidar

I'm trying to create environment mesh with textures, the mesh has been built successfully but not sure how to the store captured textures to apply to the mesh later. According to this as we are creating a geometry for each anchor at the final state…
Hossein
  • 797
  • 1
  • 8
  • 24
2
votes
1 answer

How to label my own point cloud and image data to have the 3D training labels (.txt) files like KITTI 3D object detection dataset?

I have point cloud files (pcd + bin) and image (png) files. I would like to label them by my own and extract text files like KITTI format (KITTI = 2D from image + 3D from point cloud). KITTI format Can someone please let me know which annotator…
Mai
  • 21
  • 1
2
votes
2 answers

LiDAR Depth + Vision Hand Tracking for 3D Hand Tracking

I want to use Vision 2D Hand Tracking input coupled with ARKit > People Occlusion > Body Segmentation With Depth, which leverage LiDAR, to get 3D World Coordinates of the tip of the index. Steps I am doing: 1 - The 2D screen location of the finger…
Oscar Falmer
  • 1,771
  • 1
  • 24
  • 38
1 2
3
…
28 29