Lidar (also written LIDAR, LiDAR or LADAR) is a surveying technology that measures distance by illuminating a target with a laser light. Lidar exists as an acronym of Light Detection And Ranging.
Questions tagged [lidar]
295 questions
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How does Lidar penetrate jungle canopy for archeological surveys?
I've read articles like these https://www.nationalgeographic.com/history/article/maya-laser-lidar-guatemala-pacunam and wanted to understand what's going on here. My understanding is the lidar would mostly bounce off of the canopy but to create maps…
blueether
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Waterproofing LiDAR?
I am interested in using a cheap LiDAR module for an outdoor robot I am building. The LiDAR modules that I am looking at are not waterproof and I was wondering how hard it would be to build a waterproof case and how much that would impact…
user16549
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Cannot see ground plane patterns with LiDAR
I mounted VLP-16 on the roof of my car while driving, I was expecting the lidar to detect the lanes on the ground since the white lines should have higher reflectivity.
But in fact I cannot see any patterns on the ground. This is my rviz…
PWCTW
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does lidar sensor output data have spatial locality?
i have a question about the output of lidar sendor (like velodyne vlp-16, etc)
Is there any spatial or temporal locality for output data which is from lidar sensor?
Does the produced output data from lidar sensor are stored in memory position…
김양곤
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Using Lidar data to detect distance of nearest obstacle, and rate of change
What's the statistically and mathematically correct way to process lidar data so that I can find out a good current estimate of the closet obstacle and its rate change?
Should I be learning about Kalman filters or is that the wrong kind of…
pitosalas
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Add a blind spot to 360 Lidar
So I am using the Neato Lidar which is 360. However if part of it is blocked, it gets really confused.
Is there a way to tell ROS, don't use angle x to y on this sensor?
Should I just use a Kinect instead?
Originally posted by burf2000 on ROS…
burf2000
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ROS package for Ibeo Lux?
I am trying to integrate an Ibeo Lux LIDAR, but I can not find a ROS package that handles this sensor. Does anybody know whether there is a ready-to-use ROS package available, or anything that is (close to being) compatible?
Originally posted by…
ps4321
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Converting 3D point to 2D pixel position using callibration data
Hi There,
I'm in the process of registering a camera image from a GoPro to a mesh generated from a lidar scanner. For this I need to transform a 3D point in the camera frame to a 2D pixel point in the image. I've found the calibration data for the…
PeteBlackerThe3rd
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ROS Driver for Keyence SZ-16D safety Sensor
Hello Everyone,
I am working on a Keyence 2D Lidar SZ-16D. The LIDAR communicates with the computer through RS-422A interface. I was wondering if someone has already written the ROS driver for it.
If not I would like to write one, it would be…
metal
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ROS Basics: Setting up my first project
I just want to make sure I'm understanding the setup properly. Maybe I'm missing something but I feel like there is a bit of a gap in the tutorial between where you are building essentially an empty project, and where they have you call premade…
Rudolf
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velodyne LiDAR, which driver or lib give the timestamp of each point?
I am looking for a VLP-16 driver lib or code that gives a point time stamp instead of per scan time stamp.
I know their official manual show how to calculate the timestamp of each point but I was wondering if there are ready-to-use drive that…
Chanoh Park
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LiDAR rig that scans within a projection window
I had an idea for a LiDAR scanner but am having trouble locking in the feasibility of it.
First of all - I know stereo matching would be way more efficient - this is more of a thought experiment at this stage.
Usually LiDAR scanners are directed by…
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ICP for LiDAR point cloud data in two frames
I am currently using the ICP to register Lidar point clouds in two frames. The problem is that the translation value calculated by the difference of average point values of utilized points in two frames seems not precise enough. Is there any…
s2unn
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3D mapping on spinning 2D unit, and Lidar Resources?
Very new to Lidar but I am seeking to use Lidar in a project and have a Spinning 2d unit I made with garmins v3HP but. Now I am caught up on mapping, I was wondering if it was possible to do things like what is shown in the image with a spinning 2D.…
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Getting LiDAR data relative to base_link
Hello, I would like to find the distance between two turtlebots using a LiDAR. Up until now I just used the default /scan and took the ranges directly and averaged it up. This got me decent results, but I saw that the distance was a little more…
Roshan