Questions tagged [lidar-data]
38 questions
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Finding buildings height using LIDAR data
I am trying to evaluate buildings height using LIDAR data, for simplicity let's say that the highest point will do.
My problem is to filter the high peaks and the noise in data.
I tried to take the polygon area of the building, and the area around…
Tom
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Extracting x, y and z coordinates from .las dataset (lidar)
I was trying to extract bare coordinates of the points in a pointcloud of a classified (vegetation) .las dataset.
Using Arcgis and looking into the attribute table is not what I'm looking for so I was asking myself, if I can "de-convert" the .las to…
user2999399
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Projection matrix calculation
def euler_to_rotation_matrix(roll, pitch, yaw):
Convert Euler angles to rotation matrix
sy = np.sin(yaw)
cy = np.cos(yaw)
sp = np.sin(pitch)
cp = np.cos(pitch)
sr = np.sin(roll)
cr = np.cos(roll)
…
Codster1
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PCL organized point cloud seems to be unorganized
I just came across something weird while dealing with organized point clouds.
I am trying to access a point using cloud->at(row,col), but get the following error:
terminate called after throwing an instance of
'pcl::UnorganizedPointCloudException' …
JoL
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Reason for losing intensity values during LiDAR processing?
I'm processing terrestrial laser scans by converting E57 files to .las through CloudCompare then trimming and normalizing the .las files in R, but somewhere along the line I'm losing my intensity values. If I load a converted file back into…
0
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1 answer
Visualizing multiple all point clouds with .bin format as a video from Lidar - Open3d
I generated several point clouds in .bin files through velodyne and would like to view the various point clouds as a video or animation.
My files 000000.bin to 007480.bin are from a route with a LIDAR turned on until the end of the path and they are…
סטיבן
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Code optimisation for extracting cloud points from AutoCAD DXF Python
I'm working on processing Lidar data with Python. The test data has about 150 000 data points but the actually data will contain hundreds of millions. Initially, it was exported as .dwg file, however, since I couldn't find a way to process it I…
Mariusz
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How to Convert point Csv file into point cloud(.pcd format)
here is how csv looks
Lidar csv file
help me with it.
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1 answer
Remapping rostopic from the existing ReadOnly launch file
I have an RPLidar and I installed the necessary packages.
Right now, the laser data is published to the /scan topic and I can see the output from Rviz.
I have another project and I should use this implementation for that:…
noob123
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Creating orthomosaic from *.las point cloud in R
Is there a way to export a *.las point cloud in R to a orthomosaic? I loaded my las-file containing the points with the package lidR. I want to export a tif which shows the point cloud from above in RGB, similar to what an orthophoto would look…
Zoe
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LasTools-lasthin-percentile
does anyone have any experience with lasthin with percentile options?? I have a huge lidar point cloud and I only need 75th percentile and above. I labeled the points which are close to the 75th percentile as class 8 then with using lasheight I…
RS_girl
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Convert 32 bytes binary big endian file (LiDAR data) to python list or array
I have a LiDAR data set that is in 32 bytes binary big endian format and I need to convert it to python list or array then convert it to a PCD file. I'm currently using the following code, but it is only for 16 byte.
What modification should I make…
yihao ren
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Error in unique.default(x) : unique() applies only to vectors in rLiDAR package
I am getting this error while calculating the convex hull using the chullLiDAR2D function in rLiDAR. Interestingly, I did not get this error while computing the 3D convex hull using the chullLiDAR3D on the same LAS file. I have posted the code and…
Arthur_Morgan
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Traditional Computer Vision techniques for analyzing LiDAR data
I am currently looking into LiDAR data, and I was wondering are there any Computer Vision only techniques for object recognition/reconstruction for this kind of data? All the methods I have looked into have some form of Machine Learning/Deep…
Tahjid Ashfaque
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Getting a Com Port serial reading in a certain period of time
I'm taking my first steps in Python programming. I'm using a TFMini Plus Lidar connected to a Windows 7 computer through a USB to TTL serial connection.
I'm getting readings through this code:
import time
import serial
import datetime
import…
JacquesGodin
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