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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.

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How to get real world distance with/from iOS AVFoundation LiDAR?

I am trying to use the depthmap data, but in a very simple way. I am reading data from the Lidar. The data is somehow unexpected. When the iPhone 14 Pro is parallel to a flat wall, say in a distance of 0.3 meter. I would expect to read that 0,3…
Taras Buha
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2D camera and 3D lidar calibration (kitti format)

I have camera and lidar calib files like this: camera: x: 0.8321346282958983 y: -0.011121243238449097 z: -0.5207197332382203 roll: 0.5077840027360132 pitch: 0.7446574568748474 yaw: 0.3340256132006706 width: 1920 height: 1080 cx: 960.0 cy: 540.0 fx:…
Dang Vo
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Issue with obtaining accurate timestamp for scan data in current date and time in LMS511 and LMS111 sensors

I need to obtain a timestamp for every scan data with the current date and time. However, I am facing some issues with getting the correct time and date values. I have made changes to the current time in sopas engineering tool, the obtained data…
Saro Dev
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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
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Is there an R function for finding if a .LAZ file is contained in a .SHP polygon

I have a folder in which I have several thousand .LAZ files and I would like to select those that are contained in the .SHP polygon. Can it be programmed in R, e.g. by adding a given name to .LAZ files. Loading so many files into a GIS program is…
jan kowalsky
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How to extract x and y coordinates from LIDAR sensor(LMS511) data in Python?

I have a LIDAR sensor, specifically the SICK LMS511, which outputs continuous data in the following format: sRA LMDscandata 0 1 151FDC8 0 0 EC4B EDD5 85BF655E 85BF9621 0 0 3E 0 0 2710 21C 0 1 DIST1 3F800000 00000000 4A0E5 1A0B B5 305 30F 312 315 320…
Saro Dev
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Error: Invalid function provided as algorithm while using Segment_trees function in lidr in R

I am trying to use the ForestTools::mcws() function and segment_trees in R to segment a LiDAR point cloud using a CHM raster. However, when I try to run the function with the segment_trees() function from the lidR package, I get the following error…
Purple_Ad
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Detecting a single plane using Ransac in python

When detecting building roof top ransac is detecting multiple building roof as a one single plane. I want to segment each building rooftop separately. How the data looks like https://i.stack.imgur.com/cAFRL.png What ransac produce…
Purple_Ad
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cannot use ydlidar on ros2 rolling

I downloaded the official package to use YDlidar X4 in ROS2 rolling, but every time i run ros2 launch ydlidar_ros2_driver ydlidar_launch.py, the following error occurs: INFO] [launch]: All log files can be found below…
the DEV
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2D LiDAR clusters correction

I am trying to do camera-lidar calibration. For that i took some lidar data of a checkerboard. For the extrinsic calibration I selected the corner points of checkerboard in image and in pcd. While selecting the pcd points i noticed that the points…
Rupika raj
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how to remove floor surface in the pointcloud2 data with the pcl_ros

first, thanks for reading. now i am trying to do remove floor in the point cloud data, this is a code that i wrote to remove the floor point cloud. #include #include #include #include #include…
lee dida
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Object detection on lidar data

I have lidar data and stitched 360-degree images. My task is to detect the individual object and localize them on the lidar data. I have done object detection on stitched images but am unable to map those objects into lidar data. Any help will be…
Ismaeil
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Is there any way to render rooms with captured images using RoomPlan?

I am now building an interior configurator using RoomPlan API. The app's workflow will be the following: Scan the room with RoomPlan and get the geometry of the room Render the room with captured images obtained while scanning the room. This will…
Yuta Yokomizo
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RealityKit – Specify a LiDAR scanning area

I am currently developing an application that has the end goal of scanning furniture and creating an .obj file from it. As you can imagine when scanning using the scene reconstruction features in Swift, this produces a lot of noise for other objects…
James McNulty
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Converting python 2 URG lidar filter to python 3 in ROS

I am trying to convert some python 2 code into python 3 in order to get a lidar sensor to work properly and only display 180 degrees instead of 270. I have code that worked previously in python 2 but now that I am trying to run it in python 3 I am…
mattcrouse
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